]> ncurses.scripts.mit.edu Git - ncurses.git/blobdiff - aclocal.m4
ncurses 6.4 - patch 20240414
[ncurses.git] / aclocal.m4
index 6913e9d2c650738f0a56ca4d4cbf22bf3ffc2346..1c2b788bf1ff2c381c6bc33851d0e0558e7a410a 100644 (file)
@@ -1,5 +1,6 @@
 dnl***************************************************************************
-dnl Copyright (c) 1998-2018,2019 Free Software Foundation, Inc.              *
+dnl Copyright 2018-2023,2024 Thomas E. Dickey                                *
+dnl Copyright 1998-2017,2018 Free Software Foundation, Inc.                  *
 dnl                                                                          *
 dnl Permission is hereby granted, free of charge, to any person obtaining a  *
 dnl copy of this software and associated documentation files (the            *
@@ -28,18 +29,20 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: aclocal.m4,v 1.880 2019/09/07 23:00:39 tom Exp $
+dnl $Id: aclocal.m4,v 1.1069 2024/03/30 22:15:45 tom Exp $
 dnl Macros used in NCURSES auto-configuration script.
 dnl
 dnl These macros are maintained separately from NCURSES.  The copyright on
 dnl this file applies to the aggregation of macros and does not affect use of
 dnl these macros in other applications.
 dnl
-dnl See https://invisible-island.net/autoconf/ for additional information.
+dnl See these pages for additional information:
+dnl            https://invisible-island.net/autoconf/
+dnl            https://invisible-island.net/autoconf/my-autoconf.html
 dnl
 dnl ---------------------------------------------------------------------------
 dnl ---------------------------------------------------------------------------
-dnl AM_LANGINFO_CODESET version: 4 updated: 2015/04/18 08:56:57
+dnl AM_LANGINFO_CODESET version: 7 updated: 2023/01/11 04:05:23
 dnl -------------------
 dnl Inserted as requested by gettext 0.10.40
 dnl File from /usr/share/aclocal
@@ -51,48 +54,70 @@ dnl From Bruno Haible.
 AC_DEFUN([AM_LANGINFO_CODESET],
 [
 AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
-       [AC_TRY_LINK([#include <langinfo.h>],
-       [char* cs = nl_langinfo(CODESET);],
+       [AC_TRY_LINK([
+$ac_includes_default
+#include <langinfo.h>],
+       [char* cs = nl_langinfo(CODESET); (void)cs],
        am_cv_langinfo_codeset=yes,
        am_cv_langinfo_codeset=no)
        ])
-       if test $am_cv_langinfo_codeset = yes; then
+       if test "$am_cv_langinfo_codeset" = yes; then
                AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
                [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
        fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ABI_DEFAULTS version: 2 updated: 2015/06/06 13:49:58
+dnl CF_ABI_DEFAULTS version: 5 updated: 2023/10/21 08:54:23
 dnl ---------------
 dnl Provide configure-script defaults for different ncurses ABIs.
 AC_DEFUN([CF_ABI_DEFAULTS],[
 AC_REQUIRE([CF_NCURSES_WITH_ABI_VERSION])
-case x$cf_cv_abi_version in
+
+# ABI 5 defaults:
+cf_dft_ccharw_max=5
+cf_dft_chtype=auto
+cf_dft_ext_colors=no
+cf_dft_ext_const=no
+cf_dft_ext_mouse=no
+cf_dft_ext_putwin=no
+cf_dft_ext_spfuncs=no
+cf_dft_filter_syms=no
+cf_dft_interop=no
+cf_dft_mmask_t=auto
+cf_dft_opaque_curses=no
+cf_dft_ordinate_type=short
+cf_dft_signed_char=no
+cf_dft_tparm_arg=long
+cf_dft_widec=no
+cf_dft_with_lp64=no
+
+# ABI 6 default differences from ABI 5:
+case x$cf_cv_abi_default in
 (x[[6789]])
+       cf_dft_chtype=uint32_t
        cf_dft_ext_colors=yes
        cf_dft_ext_const=yes
        cf_dft_ext_mouse=yes
        cf_dft_ext_putwin=yes
        cf_dft_ext_spfuncs=yes
        cf_dft_filter_syms=yes
-       cf_dft_chtype=uint32_t
-       cf_dft_mmask_t=uint32_t
        cf_dft_interop=yes
+       cf_dft_mmask_t=uint32_t
+       cf_dft_opaque_curses=yes
        cf_dft_tparm_arg=intptr_t
+       cf_dft_widec=yes
        cf_dft_with_lp64=yes
        ;;
-(*)
-       cf_dft_ext_colors=no
-       cf_dft_ext_const=no
-       cf_dft_ext_mouse=no
-       cf_dft_ext_putwin=no
-       cf_dft_ext_spfuncs=no
-       cf_dft_filter_syms=no
-       cf_dft_chtype=auto
-       cf_dft_mmask_t=auto
-       cf_dft_interop=no
-       cf_dft_tparm_arg=long
-       cf_dft_with_lp64=no
+esac
+
+# ABI 7 default differences from ABI 6:
+case x$cf_cv_abi_default in
+(x[[789]])
+       cf_dft_ccharw_max=6
+       cf_dft_mmask_t=uint64_t
+       cf_dft_ordinate_type=int
+       cf_dft_signed_char=yes
+       # also: remove the wgetch-events feature in ABI 7
        ;;
 esac
 ])dnl
@@ -155,10 +180,11 @@ AC_DEFUN([CF_ADD_ADAFLAGS],[
        AC_SUBST(ADAFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ADD_CFLAGS version: 13 updated: 2017/02/25 18:57:40
+dnl CF_ADD_CFLAGS version: 15 updated: 2020/12/31 10:54:15
 dnl -------------
 dnl Copy non-preprocessor flags to $CFLAGS, preprocessor flags to $CPPFLAGS
-dnl The second parameter if given makes this macro verbose.
+dnl $1 = flags to add
+dnl $2 = if given makes this macro verbose.
 dnl
 dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
 dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
@@ -172,19 +198,19 @@ cf_new_extra_cppflags=
 
 for cf_add_cflags in $1
 do
-case $cf_fix_cppflags in
+case "$cf_fix_cppflags" in
 (no)
-       case $cf_add_cflags in
+       case "$cf_add_cflags" in
        (-undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C)
-               case $cf_add_cflags in
+               case "$cf_add_cflags" in
                (-D*)
-                       cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^-D[[^=]]*='\''\"[[^"]]*//'`
+                       cf_tst_cflags=`echo "${cf_add_cflags}" |sed -e 's/^-D[[^=]]*='\''\"[[^"]]*//'`
 
                        test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
                                && test -z "${cf_tst_cflags}" \
                                && cf_fix_cppflags=yes
 
-                       if test $cf_fix_cppflags = yes ; then
+                       if test "$cf_fix_cppflags" = yes ; then
                                CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
                                continue
                        elif test "${cf_tst_cflags}" = "\"'" ; then
@@ -197,7 +223,7 @@ case $cf_fix_cppflags in
                (*$cf_add_cflags)
                        ;;
                (*)
-                       case $cf_add_cflags in
+                       case "$cf_add_cflags" in
                        (-D*)
                                cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
                                CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,$cf_tst_cppflags)
@@ -215,7 +241,7 @@ case $cf_fix_cppflags in
 (yes)
        CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
 
-       cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^[[^"]]*"'\''//'`
+       cf_tst_cflags=`echo "${cf_add_cflags}" |sed -e 's/^[[^"]]*"'\''//'`
 
        test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
                && test -z "${cf_tst_cflags}" \
@@ -243,9 +269,26 @@ AC_SUBST(EXTRA_CPPFLAGS)
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ADD_INCDIR version: 15 updated: 2018/06/20 20:23:13
+dnl CF_ADD_CXXFLAGS version: 1 updated: 2020/04/04 16:16:13
+dnl ---------------
+dnl Copy non-preprocessor flags to $CXXFLAGS, preprocessor flags to $CPPFLAGS
+dnl The second parameter if given makes this macro verbose.
+dnl
+dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
+dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
+dnl confused by the quotes (which require backslashes to keep them usable).
+AC_DEFUN([CF_ADD_CXXFLAGS],
+[
+cf_save_CXXFLAGS="$CFLAGS"
+CFLAGS="$CXXFLAGS"
+CF_ADD_CFLAGS($1 ifelse($2,,,[,$2]))
+CXXFLAGS="$CFLAGS"
+CFLAGS="$cf_save_CXXFLAGS"
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_ADD_INCDIR version: 17 updated: 2021/09/04 06:35:04
 dnl -------------
-dnl Add an include-directory to $CPPFLAGS.  Don't add /usr/include, since it's
+dnl Add an include-directory to $CPPFLAGS.  Don't add /usr/include, since it is
 dnl redundant.  We don't normally need to add -I/usr/local/include for gcc,
 dnl but old versions (and some misinstalled ones) need that.  To make things
 dnl worse, gcc 3.x may give error messages if -I/usr/local/include is added to
@@ -255,9 +298,9 @@ AC_DEFUN([CF_ADD_INCDIR],
 if test -n "$1" ; then
   for cf_add_incdir in $1
   do
-       while test $cf_add_incdir != /usr/include
+       while test "$cf_add_incdir" != /usr/include
        do
-         if test -d $cf_add_incdir
+         if test -d "$cf_add_incdir"
          then
                cf_have_incdir=no
                if test -n "$CFLAGS$CPPFLAGS" ; then
@@ -288,7 +331,7 @@ if test -n "$1" ; then
                  CF_VERBOSE(adding $cf_add_incdir to include-path)
                  ifelse([$2],,CPPFLAGS,[$2])="$ifelse([$2],,CPPFLAGS,[$2]) -I$cf_add_incdir"
 
-                 cf_top_incdir=`echo $cf_add_incdir | sed -e 's%/include/.*$%/include%'`
+                 cf_top_incdir=`echo "$cf_add_incdir" | sed -e 's%/include/.*$%/include%'`
                  test "$cf_top_incdir" = "$cf_add_incdir" && break
                  cf_add_incdir="$cf_top_incdir"
                else
@@ -310,7 +353,7 @@ dnl $1 = library to add, without the "-l"
 dnl $2 = variable to update (default $LIBS)
 AC_DEFUN([CF_ADD_LIB],[CF_ADD_LIBS(-l$1,ifelse($2,,LIBS,[$2]))])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ADD_LIBDIR version: 10 updated: 2015/04/18 08:56:57
+dnl CF_ADD_LIBDIR version: 11 updated: 2020/12/31 20:19:42
 dnl -------------
 dnl    Adds to the library-path
 dnl
@@ -324,9 +367,9 @@ AC_DEFUN([CF_ADD_LIBDIR],
 if test -n "$1" ; then
        for cf_add_libdir in $1
        do
-               if test $cf_add_libdir = /usr/lib ; then
+               if test "$cf_add_libdir" = /usr/lib ; then
                        :
-               elif test -d $cf_add_libdir
+               elif test -d "$cf_add_libdir"
                then
                        cf_have_libdir=no
                        if test -n "$LDFLAGS$LIBS" ; then
@@ -346,7 +389,7 @@ if test -n "$1" ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ADD_LIBS version: 2 updated: 2014/07/13 14:33:27
+dnl CF_ADD_LIBS version: 3 updated: 2019/11/02 16:47:33
 dnl -----------
 dnl Add one or more libraries, used to enforce consistency.  Libraries are
 dnl prepended to an existing list, since their dependencies are assumed to
@@ -355,24 +398,24 @@ dnl
 dnl $1 = libraries to add, with the "-l", etc.
 dnl $2 = variable to update (default $LIBS)
 AC_DEFUN([CF_ADD_LIBS],[
-cf_add_libs="$1"
-# Filter out duplicates - this happens with badly-designed ".pc" files...
-for cf_add_1lib in [$]ifelse($2,,LIBS,[$2])
-do
-       for cf_add_2lib in $cf_add_libs
-       do
-               if test "x$cf_add_1lib" = "x$cf_add_2lib"
-               then
+cf_add_libs="[$]ifelse($2,,LIBS,[$2])"
+# reverse order
+cf_add_0lib=
+for cf_add_1lib in $1; do cf_add_0lib="$cf_add_1lib $cf_add_0lib"; done
+# filter duplicates
+for cf_add_1lib in $cf_add_0lib; do
+       for cf_add_2lib in $cf_add_libs; do
+               if test "x$cf_add_1lib" = "x$cf_add_2lib"; then
                        cf_add_1lib=
                        break
                fi
        done
-       test -n "$cf_add_1lib" && cf_add_libs="$cf_add_libs $cf_add_1lib"
+       test -n "$cf_add_1lib" && cf_add_libs="$cf_add_1lib $cf_add_libs"
 done
 ifelse($2,,LIBS,[$2])="$cf_add_libs"
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ADD_SUBDIR_PATH version: 4 updated: 2013/10/08 17:47:05
+dnl CF_ADD_SUBDIR_PATH version: 5 updated: 2020/12/31 20:19:42
 dnl ------------------
 dnl Append to a search-list for a nonstandard header/lib-file
 dnl    $1 = the variable to return as result
@@ -384,16 +427,35 @@ AC_DEFUN([CF_ADD_SUBDIR_PATH],
 [
 test "x$4" != "x$5" && \
 test -d "$4" && \
-ifelse([$5],NONE,,[(test -z "$5" || test x$5 = xNONE || test "x$4" != "x$5") &&]) {
+ifelse([$5],NONE,,[{ test -z "$5" || test "x$5" = xNONE || test "x$4" != "x$5"; } &&]) {
        test -n "$verbose" && echo "    ... testing for $3-directories under $4"
-       test -d $4/$3 &&          $1="[$]$1 $4/$3"
-       test -d $4/$3/$2 &&       $1="[$]$1 $4/$3/$2"
-       test -d $4/$3/$2/$3 &&    $1="[$]$1 $4/$3/$2/$3"
-       test -d $4/$2/$3 &&       $1="[$]$1 $4/$2/$3"
-       test -d $4/$2/$3/$2 &&    $1="[$]$1 $4/$2/$3/$2"
+       test -d "$4/$3" &&          $1="[$]$1 $4/$3"
+       test -d "$4/$3/$2" &&       $1="[$]$1 $4/$3/$2"
+       test -d "$4/$3/$2/$3" &&    $1="[$]$1 $4/$3/$2/$3"
+       test -d "$4/$2/$3" &&       $1="[$]$1 $4/$2/$3"
+       test -d "$4/$2/$3/$2" &&    $1="[$]$1 $4/$2/$3/$2"
 }
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_APPEND_CFLAGS version: 3 updated: 2021/09/05 17:25:40
+dnl ----------------
+dnl Use CF_ADD_CFLAGS after first checking for potential redefinitions.
+dnl $1 = flags to add
+dnl $2 = if given makes this macro verbose.
+define([CF_APPEND_CFLAGS],
+[
+for cf_add_cflags in $1
+do
+       case "x$cf_add_cflags" in
+       (x-[[DU]]*)
+               CF_REMOVE_CFLAGS($cf_add_cflags,CFLAGS,[$2])
+               CF_REMOVE_CFLAGS($cf_add_cflags,CPPFLAGS,[$2])
+               ;;
+       esac
+       CF_ADD_CFLAGS([$cf_add_cflags],[$2])
+done
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_APPEND_TEXT version: 1 updated: 2017/02/25 18:58:55
 dnl --------------
 dnl use this macro for appending text without introducing an extra blank at
@@ -439,7 +501,7 @@ ifelse([$3],,[    :]dnl
 ])dnl
 ])])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_AR_FLAGS version: 6 updated: 2015/10/10 15:25:05
+dnl CF_AR_FLAGS version: 9 updated: 2021/01/01 13:31:04
 dnl -----------
 dnl Check for suitable "ar" (archiver) options for updating an archive.
 dnl
@@ -450,39 +512,55 @@ AC_DEFUN([CF_AR_FLAGS],[
 AC_REQUIRE([CF_PROG_AR])
 
 AC_CACHE_CHECK(for options to update archives, cf_cv_ar_flags,[
-       cf_cv_ar_flags=unknown
-       for cf_ar_flags in -curvU -curv curv -crv crv -cqv cqv -rv rv
-       do
+       case "$cf_cv_system_name" in
+       (*-msvc*)
+               cf_cv_ar_flags=''
+               cat >mk_static_lib.sh <<-EOF
+               #!$SHELL
+               MSVC_BIN="[$]AR"
+               out="\[$]1"
+               shift
+               exec \[$]MSVC_BIN -out:"\[$]out" \[$]@
+               EOF
+               chmod +x mk_static_lib.sh
+               AR=`pwd`/mk_static_lib.sh
+               ;;
+       (*)
+               cf_cv_ar_flags=unknown
+               for cf_ar_flags in -curvU -curv curv -crv crv -cqv cqv -rv rv
+               do
 
-               # check if $ARFLAGS already contains this choice
-               if test "x$ARFLAGS" != "x" ; then
-                       cf_check_ar_flags=`echo "x$ARFLAGS" | sed -e "s/$cf_ar_flags\$//" -e "s/$cf_ar_flags / /"`
-                       if test "x$ARFLAGS" != "$cf_check_ar_flags" ; then
-                               cf_cv_ar_flags=
-                               break
+                       # check if $ARFLAGS already contains this choice
+                       if test "x$ARFLAGS" != "x" ; then
+                               cf_check_ar_flags=`echo "x$ARFLAGS" | sed -e "s/$cf_ar_flags\$//" -e "s/$cf_ar_flags / /"`
+                               if test "x$ARFLAGS" != "$cf_check_ar_flags" ; then
+                                       cf_cv_ar_flags=
+                                       break
+                               fi
                        fi
-               fi
 
-               rm -f conftest.$ac_cv_objext
-               rm -f conftest.a
+                       rm -f "conftest.$ac_cv_objext"
+                       rm -f conftest.a
 
-               cat >conftest.$ac_ext <<EOF
+                       cat >"conftest.$ac_ext" <<EOF
 #line __oline__ "configure"
 int    testdata[[3]] = { 123, 456, 789 };
 EOF
-               if AC_TRY_EVAL(ac_compile) ; then
-                       echo "$AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext" >&AC_FD_CC
-                       $AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext 2>&AC_FD_CC 1>/dev/null
-                       if test -f conftest.a ; then
-                               cf_cv_ar_flags=$cf_ar_flags
+                       if AC_TRY_EVAL(ac_compile) ; then
+                               echo "$AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext" >&AC_FD_CC
+                               $AR $ARFLAGS "$cf_ar_flags" conftest.a "conftest.$ac_cv_objext" 2>&AC_FD_CC 1>/dev/null
+                               if test -f conftest.a ; then
+                                       cf_cv_ar_flags="$cf_ar_flags"
+                                       break
+                               fi
+                       else
+                               CF_VERBOSE(cannot compile test-program)
                                break
                        fi
-               else
-                       CF_VERBOSE(cannot compile test-program)
-                       break
-               fi
-       done
-       rm -f conftest.a conftest.$ac_ext conftest.$ac_cv_objext
+               done
+               rm -f conftest.a "conftest.$ac_ext" "conftest.$ac_cv_objext"
+               ;;
+       esac
 ])
 
 if test -n "$ARFLAGS" ; then
@@ -520,7 +598,7 @@ AC_DEFUN([CF_AWK_BIG_PRINTF],
        esac
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_BOOL_DECL version: 8 updated: 2004/01/30 15:51:18
+dnl CF_BOOL_DECL version: 9 updated: 2023/12/03 09:21:34
 dnl ------------
 dnl Test if 'bool' is a builtin type in the configured C++ compiler.  Some
 dnl older compilers (e.g., gcc 2.5.8) don't support 'bool' directly; gcc
@@ -535,13 +613,13 @@ AC_DEFUN([CF_BOOL_DECL],
 AC_MSG_CHECKING(if we should include stdbool.h)
 
 AC_CACHE_VAL(cf_cv_header_stdbool_h,[
-       AC_TRY_COMPILE([],[bool foo = false],
+       AC_TRY_COMPILE([],[bool foo = false; (void)foo],
                [cf_cv_header_stdbool_h=0],
                [AC_TRY_COMPILE([
 #ifndef __BEOS__
 #include <stdbool.h>
 #endif
-],[bool foo = false],
+],[bool foo = false; (void)foo],
                        [cf_cv_header_stdbool_h=1],
                        [cf_cv_header_stdbool_h=0])])])
 
@@ -556,7 +634,7 @@ AC_CACHE_VAL(ifelse($1,,cf_cv_builtin_bool,[$1]),[
        AC_TRY_COMPILE([
 #include <stdio.h>
 #include <sys/types.h>
-],[bool x = false],
+],[bool x = false; (void)x],
                [ifelse($1,,cf_cv_builtin_bool,[$1])=1],
                [ifelse($1,,cf_cv_builtin_bool,[$1])=0])
        ])
@@ -567,21 +645,41 @@ else      AC_MSG_RESULT(no)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_BOOL_SIZE version: 15 updated: 2017/01/21 11:06:25
+dnl CF_BOOL_SIZE version: 20 updated: 2023/02/18 17:41:25
 dnl ------------
 dnl Test for the size of 'bool' in the configured C++ compiler (e.g., a type).
-dnl Don't bother looking for bool.h, since it's been deprecated.
+dnl Don't bother looking for bool.h, since it has been deprecated.
 dnl
 dnl If the current compiler is C rather than C++, we get the bool definition
 dnl from <stdbool.h>.
 AC_DEFUN([CF_BOOL_SIZE],
 [
-AC_MSG_CHECKING([for size of bool])
-AC_CACHE_VAL(cf_cv_type_of_bool,[
+AC_CHECK_SIZEOF(bool,,[
+$ac_includes_default
+
+#if defined(__cplusplus)
+
+#ifdef HAVE_GXX_BUILTIN_H
+#include <g++/builtin.h>
+#elif HAVE_GPP_BUILTIN_H
+#include <gpp/builtin.h>
+#elif HAVE_BUILTIN_H
+#include <builtin.h>
+#endif
+
+#else
+
+#if $cf_cv_header_stdbool_h
+#include <stdbool.h>
+#endif
+
+#endif
+])
+
+AC_CACHE_CHECK(for type of bool, cf_cv_type_of_bool,[
        rm -f cf_test.out
        AC_TRY_RUN([
-#include <stdlib.h>
-#include <stdio.h>
+$ac_includes_default
 
 #if defined(__cplusplus)
 
@@ -622,10 +720,18 @@ int main(void)
                   cf_cv_type_of_bool=unknown
                 fi],
                [cf_cv_type_of_bool=unknown],
-               [cf_cv_type_of_bool=unknown])
-       ])
+               [
+               case x$ac_cv_sizeof_bool in
+               (x1) cf_cv_type_of_bool="unsigned char";;
+               (x2) cf_cv_type_of_bool="unsigned short";;
+               (x4) cf_cv_type_of_bool="unsigned int";;
+               (x8) cf_cv_type_of_bool="unsigned long";;
+               (*)  cf_cv_type_of_bool=unknown;;
+               esac
+               ])
        rm -f cf_test.out
-AC_MSG_RESULT($cf_cv_type_of_bool)
+])
+
 if test "$cf_cv_type_of_bool" = unknown ; then
        case .$NCURSES_BOOL in
        (.auto|.) NCURSES_BOOL=unsigned;;
@@ -635,7 +741,7 @@ if test "$cf_cv_type_of_bool" = unknown ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_BUILD_CC version: 8 updated: 2018/01/04 20:31:04
+dnl CF_BUILD_CC version: 11 updated: 2022/12/04 15:40:08
 dnl -----------
 dnl If we're cross-compiling, allow the user to override the tools and their
 dnl options.  The configure script is oriented toward identifying the host
@@ -701,7 +807,32 @@ if test "$cross_compiling" = yes ; then
 
        : ${BUILD_CC:='${CC}'}
 
-       if ( test "$BUILD_CC" = "$CC" || test "$BUILD_CC" = '${CC}' ) ; then
+       AC_MSG_CHECKING(if the build-compiler "$BUILD_CC" works)
+
+       cf_save_crossed=$cross_compiling
+       cf_save_ac_link=$ac_link
+       cross_compiling=no
+       cf_build_cppflags=$BUILD_CPPFLAGS
+       test "$cf_build_cppflags" = "#" && cf_build_cppflags=
+       ac_link='$BUILD_CC -o "conftest$ac_exeext" $BUILD_CFLAGS $cf_build_cppflags $BUILD_LDFLAGS "conftest.$ac_ext" $BUILD_LIBS >&AS_MESSAGE_LOG_FD'
+
+       AC_TRY_RUN([#include <stdio.h>
+               int main(int argc, char *argv[])
+               {
+                       ${cf_cv_main_return:-return}(argc < 0 || argv == 0 || argv[0] == 0);
+               }
+       ],
+               cf_ok_build_cc=yes,
+               cf_ok_build_cc=no,
+               cf_ok_build_cc=unknown)
+
+       cross_compiling=$cf_save_crossed
+       ac_link=$cf_save_ac_link
+
+       AC_MSG_RESULT($cf_ok_build_cc)
+
+       if test "$cf_ok_build_cc" != yes
+       then
                AC_MSG_ERROR([Cross-build requires two compilers.
 Use --with-build-cc to specify the native compiler.])
        fi
@@ -727,7 +858,45 @@ AC_SUBST(BUILD_EXEEXT)
 AC_SUBST(BUILD_OBJEXT)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CC_ENV_FLAGS version: 9 updated: 2018/07/29 18:03:26
+dnl CF_C11_NORETURN version: 4 updated: 2023/02/18 17:41:25
+dnl ---------------
+AC_DEFUN([CF_C11_NORETURN],
+[
+AC_MSG_CHECKING(if you want to use C11 _Noreturn feature)
+CF_ARG_ENABLE(stdnoreturn,
+       [  --enable-stdnoreturn    enable C11 _Noreturn feature for diagnostics],
+       [enable_stdnoreturn=yes],
+       [enable_stdnoreturn=no])
+AC_MSG_RESULT($enable_stdnoreturn)
+
+if test $enable_stdnoreturn = yes; then
+AC_CACHE_CHECK([for C11 _Noreturn feature], cf_cv_c11_noreturn,
+       [AC_TRY_COMPILE([
+$ac_includes_default
+#include <stdnoreturn.h>
+static _Noreturn void giveup(void) { exit(0); }
+       ],
+       [if (feof(stdin)) giveup()],
+       cf_cv_c11_noreturn=yes,
+       cf_cv_c11_noreturn=no)
+       ])
+else
+       cf_cv_c11_noreturn=no,
+fi
+
+if test "$cf_cv_c11_noreturn" = yes; then
+       AC_DEFINE(HAVE_STDNORETURN_H, 1,[Define if <stdnoreturn.h> header is available and working])
+       AC_DEFINE_UNQUOTED(STDC_NORETURN,_Noreturn,[Define if C11 _Noreturn keyword is supported])
+       HAVE_STDNORETURN_H=1
+else
+       HAVE_STDNORETURN_H=0
+fi
+
+AC_SUBST(HAVE_STDNORETURN_H)
+AC_SUBST(STDC_NORETURN)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_CC_ENV_FLAGS version: 11 updated: 2023/02/20 11:15:46
 dnl ---------------
 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
 dnl into CC.  This will not help with broken scripts that wrap the compiler
@@ -742,7 +911,7 @@ dnl outweighs that limitation.
 AC_DEFUN([CF_CC_ENV_FLAGS],
 [
 # This should have been defined by AC_PROG_CC
-: ${CC:=cc}
+: "${CC:=cc}"
 
 AC_MSG_CHECKING(\$CFLAGS variable)
 case "x$CFLAGS" in
@@ -768,7 +937,7 @@ case "$CC" in
        AC_MSG_WARN(your environment uses the CC variable to hold CFLAGS/CPPFLAGS options)
        # humor him...
        cf_prog=`echo "$CC" | sed -e 's/        / /g' -e 's/[[ ]]* / /g' -e 's/[[ ]]*[[ ]]-[[^ ]].*//'`
-       cf_flags=`echo "$CC" | ${AWK:-awk} -v prog="$cf_prog" '{ printf("%s", [substr]([$]0,1+length(prog))); }'`
+       cf_flags=`echo "$CC" | sed -e "s%^$cf_prog%%"`
        CC="$cf_prog"
        for cf_arg in $cf_flags
        do
@@ -791,7 +960,7 @@ case "$CC" in
 esac
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CFG_DEFAULTS version: 11 updated: 2015/04/17 21:13:04
+dnl CF_CFG_DEFAULTS version: 16 updated: 2021/01/04 19:33:05
 dnl ---------------
 dnl Determine the default configuration into which we'll install ncurses.  This
 dnl can be overridden by the user's command-line options.  There's two items to
@@ -804,7 +973,8 @@ dnl We don't use AC_PREFIX_DEFAULT, because it gets evaluated too soon, and
 dnl we don't use AC_PREFIX_PROGRAM, because we cannot distinguish ncurses's
 dnl programs from a vendor's.
 AC_DEFUN([CF_CFG_DEFAULTS],
-[
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+
 AC_MSG_CHECKING(for prefix)
 if test "x$prefix" = "xNONE" ; then
        case "$cf_cv_system_name" in
@@ -822,20 +992,20 @@ if test "x$prefix" = "xNONE" ; then
 AC_MSG_CHECKING(for default include-directory)
 test -n "$verbose" && echo 1>&AC_FD_MSG
 for cf_symbol in \
-       $includedir \
-       $includedir/ncurses \
-       $prefix/include \
-       $prefix/include/ncurses \
+       "$includedir" \
+       "$includedir/ncurses" \
+       "$prefix/include" \
+       "$prefix/include/ncurses" \
        /usr/local/include \
        /usr/local/include/ncurses \
        /usr/include \
        /usr/include/ncurses
 do
-       cf_dir=`eval echo $cf_symbol`
-       if test -f $cf_dir/curses.h ; then
-       if ( fgrep NCURSES_VERSION $cf_dir/curses.h 2>&1 >/dev/null ) ; then
+       cf_dir=`eval echo "$cf_symbol"`
+       if test -f "$cf_dir/curses.h" ; then
+       if ( ${FGREP-fgrep} NCURSES_VERSION "$cf_dir/curses.h" >/dev/null 2>&1 ) ; then
                includedir="$cf_symbol"
-               test -n "$verbose"  && echo $ac_n "     found " 1>&AC_FD_MSG
+               test -n "$verbose"  && echo $ECHO_N "   found " 1>&AC_FD_MSG
                break
        fi
        fi
@@ -845,14 +1015,14 @@ AC_MSG_RESULT($includedir)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CGETENT version: 6 updated: 2017/01/21 11:06:25
+dnl CF_CGETENT version: 7 updated: 2023/02/18 17:41:25
 dnl ----------
 dnl Check if the terminal-capability database functions are available.  If not,
 dnl ncurses has a much-reduced version.
 AC_DEFUN([CF_CGETENT],[
 AC_CACHE_CHECK(for terminal-capability database functions,cf_cv_cgetent,[
 AC_TRY_LINK([
-#include <stdlib.h>],[
+$ac_includes_default],[
        char temp[128];
        char *buf = temp;
        char *db_array = temp;
@@ -870,7 +1040,7 @@ then
 AC_CACHE_CHECK(if cgetent uses const parameter,cf_cv_cgetent_const,[
 AC_TRY_LINK([
 #pragma GCC diagnostic error "-Wincompatible-pointer-types-discards-qualifiers"
-#include <stdlib.h>],[
+$ac_includes_default],[
        char temp[128];
        char *buf = temp;
 #ifndef _NETBSD_SOURCE                 /* given, since April 2004 in stdlib.h */
@@ -890,7 +1060,7 @@ AC_TRY_LINK([
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_CACHE version: 12 updated: 2012/10/02 20:55:03
+dnl CF_CHECK_CACHE version: 13 updated: 2020/12/31 10:54:15
 dnl --------------
 dnl Check if we're accidentally using a cache from a different machine.
 dnl Derive the system name, as a check for reusing the autoconf cache.
@@ -904,7 +1074,7 @@ dnl Note: we would use $ac_config_sub, but that is one of the places where
 dnl autoconf 2.5x broke compatibility with autoconf 2.13
 AC_DEFUN([CF_CHECK_CACHE],
 [
-if test -f $srcdir/config.guess || test -f $ac_aux_dir/config.guess ; then
+if test -f "$srcdir/config.guess" || test -f "$ac_aux_dir/config.guess" ; then
        ifelse([$1],,[AC_CANONICAL_HOST],[$1])
        system_name="$host_os"
 else
@@ -925,7 +1095,7 @@ if test ".$system_name" != ".$cf_cv_system_name" ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_ENVIRON version: 3 updated: 2010/05/26 16:44:57
+dnl CF_CHECK_ENVIRON version: 5 updated: 2023/02/18 17:41:25
 dnl ----------------
 dnl Check for data that is usually declared in <unistd.h>, e.g., the 'environ'
 dnl variable.  Define a DECL_xxx symbol if we must declare it ourselves.
@@ -936,11 +1106,8 @@ AC_DEFUN([CF_CHECK_ENVIRON],
 [
 AC_CACHE_CHECK(if external $1 is declared, cf_cv_dcl_$1,[
     AC_TRY_COMPILE([
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include <unistd.h> ],
-    ifelse([$2],,int,[$2]) x = (ifelse([$2],,int,[$2])) $1,
+$ac_includes_default],
+    ifelse([$2],,void*,[$2]) x = (ifelse([$2],,void*,[$2])) $1; (void)x,
     [cf_cv_dcl_$1=yes],
     [cf_cv_dcl_$1=no])
 ])
@@ -954,7 +1121,7 @@ fi
 CF_CHECK_EXTERN_DATA($1,ifelse([$2],,int,[$2]))
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_ERRNO version: 12 updated: 2015/04/18 08:56:57
+dnl CF_CHECK_ERRNO version: 14 updated: 2023/02/18 17:41:25
 dnl --------------
 dnl Check for data that is usually declared in <stdio.h> or <errno.h>, e.g.,
 dnl the 'errno' variable.  Define a DECL_xxx symbol if we must declare it
@@ -966,13 +1133,9 @@ AC_DEFUN([CF_CHECK_ERRNO],
 [
 AC_CACHE_CHECK(if external $1 is declared, cf_cv_dcl_$1,[
        AC_TRY_COMPILE([
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include <stdio.h>
-#include <sys/types.h>
+$ac_includes_default
 #include <errno.h> ],
-       ifelse([$2],,int,[$2]) x = (ifelse([$2],,int,[$2])) $1,
+       ifelse([$2],,int,[$2]) x = (ifelse([$2],,int,[$2])) $1; (void)x,
        [cf_cv_dcl_$1=yes],
        [cf_cv_dcl_$1=no])
 ])
@@ -986,10 +1149,10 @@ fi
 CF_CHECK_EXTERN_DATA($1,ifelse([$2],,int,[$2]))
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_EXTERN_DATA version: 4 updated: 2015/04/18 08:56:57
+dnl CF_CHECK_EXTERN_DATA version: 5 updated: 2021/09/04 06:35:04
 dnl --------------------
 dnl Check for existence of external data in the current set of libraries.  If
-dnl we can modify it, it's real enough.
+dnl we can modify it, it is real enough.
 dnl $1 = the name to check
 dnl $2 = its type
 AC_DEFUN([CF_CHECK_EXTERN_DATA],
@@ -1011,7 +1174,29 @@ fi
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_GETENV version: 1 updated: 2019/06/23 15:28:15
+dnl CF_CHECK_FVISIBILITY version: 2 updated: 2020/04/04 16:16:13
+dnl --------------------
+dnl Check whether the compiler understands -fvisibility=hidden
+dnl
+dnl $1 = compiler
+dnl $2 = compiler-flags variable name
+dnl $3 = cache variable to set
+AC_DEFUN([CF_CHECK_FVISIBILITY],[
+AC_CACHE_CHECK(if $1 -fvisibility=hidden option works,$3,[
+    cf_save_cflags="[$]$2"
+    $2="[$]$2 -fvisibility=hidden"
+    AC_TRY_LINK([
+__attribute__ ((visibility("default"))) int somefunc() {return 42;}
+       ],[
+       if (somefunc()) return 1;
+],
+    [$3=yes],
+    [$3=no])
+    $2=$cf_save_cflags
+])
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_CHECK_GETENV version: 4 updated: 2023/12/03 10:18:09
 dnl ---------------
 dnl Check if repeated getenv calls return the same pointer, e.g., it does not
 dnl discard the previous pointer when returning a new one.
@@ -1022,11 +1207,7 @@ AC_CHECK_FUNC( getenv, ,, AC_MSG_ERROR(getenv not found) )
 AC_CHECK_FUNCS( putenv setenv strdup )
 AC_CACHE_CHECK(if getenv returns consistent values,cf_cv_consistent_getenv,[
 AC_TRY_RUN([
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/types.h>
+$ac_includes_default
 
 #if defined(HAVE_ENVIRON) && defined(DECL_ENVIRON) && !defined(environ)
 extern char **environ; /* POSIX, but some systems are not... */
@@ -1068,7 +1249,7 @@ int main(void)
                mynames[j] = str_alloc(environ[j]);
                equals = strchr(mynames[j], '=');
                if (equals != 0) {
-                       *equals++ = '\0';
+                       *equals++ = '\\0';
                        myvalues[j] = str_alloc(equals);
                } else {
                        myvalues[j] = str_alloc("");
@@ -1092,7 +1273,7 @@ int main(void)
                                }
                        }
                } while (found);
-               sprintf(value, "%lu:%p", (unsigned long) k, &mynames[j]);
+               sprintf(value, "%lu:%p", (unsigned long) k, (void*)&mynames[j]);
                set_value(name, value);
                mynames[j] = str_alloc(name);
                myvalues[j] = str_alloc(value);
@@ -1102,13 +1283,13 @@ int main(void)
                        char *value = getenv(mynames[j]);
                        if (pass) {
                                if (value == 0) {
-                                       fprintf(stderr, "getenv returned null for %s\n", mynames[j]);
+                                       fprintf(stderr, "getenv returned null for %s\\n", mynames[j]);
                                        ${cf_cv_main_return:-return}(1);
                                } else if (value != mypointer[j]) {
-                                       fprintf(stderr, "getenv returned different pointer for %s\n", mynames[j]);
+                                       fprintf(stderr, "getenv returned different pointer for %s\\n", mynames[j]);
                                        ${cf_cv_main_return:-return}(1);
                                } else if (strcmp(value, myvalues[j])) {
-                                       fprintf(stderr, "getenv returned different value for %s\n", mynames[j]);
+                                       fprintf(stderr, "getenv returned different value for %s\\n", mynames[j]);
                                        ${cf_cv_main_return:-return}(1);
                                }
                        } else {
@@ -1116,7 +1297,7 @@ int main(void)
                                mypointer[j] = value;
                                for (k = 0; k < j; ++k) {
                                        if (mypointer[j] == mypointer[k]) {
-                                               fprintf(stderr, "getenv returned same pointer for %s and %s\n", mynames[j], mynames[k]);
+                                               fprintf(stderr, "getenv returned same pointer for %s and %s\\n", mynames[j], mynames[k]);
                                                ${cf_cv_main_return:-return}(1);
                                        }
                                }
@@ -1137,12 +1318,30 @@ then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_GPM_WGETCH version: 3 updated: 2017/01/21 11:06:25
+dnl CF_CHECK_GNAT_VERSION version: 4 updated: 2021/01/01 13:31:04
+dnl ---------------------
+AC_DEFUN([CF_CHECK_GNAT_VERSION],
+[
+AC_REQUIRE([CF_GNAT_VERSION])
+case "$cf_cv_gnat_version" in
+(3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|[[1-9]][[0-9]].[[0-9]]*|20[[0-9]][[0-9]])
+       cf_cv_prog_gnat_correct=yes
+       ;;
+(*)
+       AC_MSG_WARN(Unsupported GNAT version $cf_cv_gnat_version. We require 3.11 or better. Disabling Ada95 binding.)
+       cf_cv_prog_gnat_correct=no
+       ;;
+esac
+])
+dnl ---------------------------------------------------------------------------
+dnl CF_CHECK_GPM_WGETCH version: 6 updated: 2021/01/04 18:48:01
 dnl -------------------
 dnl Check if GPM is already linked with curses.  If so - and if the linkage
 dnl is not "weak" - warn about this because it can create problems linking
 dnl applications with ncurses.
 AC_DEFUN([CF_CHECK_GPM_WGETCH],[
+AC_REQUIRE([AC_PROG_EGREP])dnl
+
 AC_CHECK_LIB(gpm,Gpm_Wgetch,[
 
 AC_CACHE_CHECK(if GPM is weakly bound to curses library, cf_cv_check_gpm_wgetch,[
@@ -1166,12 +1365,12 @@ CF_EOF
        LIBS="-static -lgpm -dynamic $LIBS"
        if AC_TRY_EVAL(ac_compile) ; then
                if AC_TRY_EVAL(ac_link) ; then
-                       cf_cv_check_gpm_wgetch=`nm conftest$ac_exeext | egrep '\<wgetch\>' | egrep '\<[[vVwW]]\>'`
+                       cf_cv_check_gpm_wgetch="`nm \"conftest$ac_exeext\" | ${EGREP-egrep} '\<wgetch\>' | ${EGREP-egrep} '\<[[vVwW]]\>'`"
                        test -n "$cf_cv_check_gpm_wgetch" && cf_cv_check_gpm_wgetch=yes
                        test -z "$cf_cv_check_gpm_wgetch" && cf_cv_check_gpm_wgetch=no
                fi
        fi
-       rm -rf conftest*
+       rm -rf ./conftest*
        LIBS="$cf_save_LIBS"
 fi
 ])
@@ -1181,28 +1380,72 @@ if test "$cf_cv_check_gpm_wgetch" != yes ; then
 fi
 ])])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_LIBTOOL_VERSION version: 1 updated: 2013/04/06 18:03:09
+dnl CF_CHECK_LIBSSP version: 1 updated: 2021/10/30 10:40:19
+dnl ---------------
+dnl Check if libssp is needed, e.g., to work around misconfigured libraries
+dnl used in cross-compiling to MinGW.
+AC_DEFUN([CF_CHECK_LIBSSP],[
+AC_CACHE_CHECK(if ssp library is needed,cf_cv_need_libssp,[
+AC_TRY_LINK([
+#include <sys/types.h>
+#include <dirent.h>
+],[
+       DIR *dp = opendir(".");
+],cf_cv_need_libssp=no,[
+       cf_save_LIBS="$LIBS"
+       LIBS="$LIBS -lssp"
+       AC_TRY_LINK([
+#include <sys/types.h>
+#include <dirent.h>
+       ],[
+                  DIR *dp = opendir(".");
+       ],cf_cv_need_libssp=yes,
+         cf_cv_need_libssp=maybe)
+       LIBS="$cf_save_LIBS"
+])dnl
+])
+
+if test "x$cf_cv_need_libssp" = xyes
+then
+       CF_ADD_LIB(ssp)
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_CHECK_LIBTOOL_VERSION version: 2 updated: 2021/05/01 16:24:34
 dnl ------------------------
 dnl Show the version of libtool
 dnl
 dnl Save the version in a cache variable - this is not entirely a good thing,
 dnl but the version string from libtool is very ugly, and for bug reports it
 dnl might be useful to have the original string.
+dnl
+dnl There is an imitation in OpenBSD, which has no apparent use other than to
+dnl deny that it is GNU libtool.  Just ignore it.
 AC_DEFUN([CF_CHECK_LIBTOOL_VERSION],[
 if test -n "$LIBTOOL" && test "$LIBTOOL" != none
 then
        AC_MSG_CHECKING(version of $LIBTOOL)
        CF_LIBTOOL_VERSION
        AC_MSG_RESULT($cf_cv_libtool_version)
-       if test -z "$cf_cv_libtool_version" ; then
-               AC_MSG_ERROR(This is not GNU libtool)
+       if test -n "$cf_cv_libtool_version"
+       then
+               cf_check_libtool_version=`$LIBTOOL --version 2>&1 | sed -e '/^$/d' -e 's,[[()]],...,g' -e 's,[[ ]],-,g' -e '2,$d'`
+               case "x$cf_check_libtool_version" in
+               (*...GNU-libtool...*)
+                       ;;
+               (*)
+                       AC_MSG_ERROR(This is not GNU libtool)
+                       ;;
+               esac
+       else
+               AC_MSG_ERROR(No version found for $LIBTOOL)
        fi
 else
        AC_MSG_ERROR(GNU libtool has not been found)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_WCHAR_H version: 2 updated: 2017/01/21 11:06:25
+dnl CF_CHECK_WCHAR_H version: 5 updated: 2023/12/03 09:21:34
 dnl ----------------
 dnl Check if wchar.h can be used, i.e., without defining _XOPEN_SOURCE_EXTENDED
 AC_DEFUN([CF_CHECK_WCHAR_H],[
@@ -1213,7 +1456,7 @@ wctype.h \
 AC_CACHE_CHECK(if wchar.h can be used as is,cf_cv_wchar_h_okay,[
 AC_TRY_COMPILE(
 [
-#include <stdlib.h>
+$ac_includes_default
 #ifdef HAVE_WCHAR_H
 #include <wchar.h>
 #endif
@@ -1222,17 +1465,17 @@ AC_TRY_COMPILE(
 #endif
 ],[
        wint_t foo = 0;
-       int bar = iswpunct(foo)],
+       int bar = iswpunct(foo); (void) bar],
        [cf_cv_wchar_h_okay=yes],
        [cf_cv_wchar_h_okay=no])])
 
-if test $cf_cv_wchar_h_okay = no
+if test "$cf_cv_wchar_h_okay" = no
 then
        CF_PREDEFINE(_XOPEN_SOURCE_EXTENDED)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CHECK_WCWIDTH_GRAPHICS version: 1 updated: 2015/12/19 17:47:56
+dnl CF_CHECK_WCWIDTH_GRAPHICS version: 4 updated: 2023/12/03 10:17:07
 dnl -------------------------
 dnl Most "modern" terminal emulators are based to some degree on VT100, and
 dnl should support line-drawing.  Even with Unicode.  There is a problem.
@@ -1330,8 +1573,9 @@ cat >conftest.in <<CF_EOF
 0x256c large plus or crossover
 CF_EOF
 AC_TRY_RUN([
+$ac_includes_default
+
 #include <locale.h>
-#include <stdio.h>
 #include <wchar.h>
 
 #define MY_LEN 80
@@ -1340,7 +1584,7 @@ int
 main(void)
 {
        FILE *fp;
-       int value;
+       unsigned value;
        char buffer[MY_LEN + 1];
        char notes[MY_LEN + 1];
        int totals = 0;
@@ -1353,19 +1597,19 @@ main(void)
                if ((fp = fopen("conftest.in", "r")) != 0) {
                        while (fgets(buffer, MY_LEN, fp) != 0) {
                                if (*buffer == '-') {
-                                       fprintf(stderr, "\t%s", buffer);
+                                       fprintf(stderr, "\\t%s", buffer);
                                } else if (sscanf(buffer, "%x %s", &value, notes) == 2) {
                                        ++totals;
-                                       if (wcwidth(value) == 1)
+                                       if (wcwidth((int)value) == 1)
                                                ++passed;
-                                       fprintf(stderr, "%d\t%s", wcwidth(value), buffer);
+                                       fprintf(stderr, "%d\\t%s", wcwidth((int)value), buffer);
                                } else {
-                                       fprintf(stderr, "?\t%s", buffer);
+                                       fprintf(stderr, "?\\t%s", buffer);
                                }
                        }
                }
        }
-       fprintf(stderr, "%d/%d passed wcwidth/graphics check\n", passed, totals);
+       fprintf(stderr, "%d/%d passed wcwidth/graphics check\\n", passed, totals);
        return (totals == passed) ? 0 : 1;
 }
 ],
@@ -1375,7 +1619,7 @@ main(void)
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CLANG_COMPILER version: 2 updated: 2013/11/19 19:23:35
+dnl CF_CLANG_COMPILER version: 9 updated: 2023/02/18 17:41:25
 dnl -----------------
 dnl Check if the given compiler is really clang.  clang's C driver defines
 dnl __GNUC__ (fooling the configure script into setting $GCC to yes) but does
@@ -1394,21 +1638,56 @@ ifelse([$2],,CLANG_COMPILER,[$2])=no
 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
        AC_MSG_CHECKING(if this is really Clang ifelse([$1],GXX,C++,C) compiler)
        cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
-       ifelse([$3],,CFLAGS,[$3])="$ifelse([$3],,CFLAGS,[$3]) -Qunused-arguments"
        AC_TRY_COMPILE([],[
 #ifdef __clang__
 #else
-make an error
+#error __clang__ is not defined
 #endif
 ],[ifelse([$2],,CLANG_COMPILER,[$2])=yes
-cf_save_CFLAGS="$cf_save_CFLAGS -Qunused-arguments"
 ],[])
        ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
        AC_MSG_RESULT($ifelse([$2],,CLANG_COMPILER,[$2]))
 fi
+
+CLANG_VERSION=none
+
+if test "x$ifelse([$2],,CLANG_COMPILER,[$2])" = "xyes" ; then
+       case "$CC" in
+       (c[[1-9]][[0-9]]|*/c[[1-9]][[0-9]])
+               AC_MSG_WARN(replacing broken compiler alias $CC)
+               CFLAGS="$CFLAGS -std=`echo "$CC" | sed -e 's%.*/%%'`"
+               CC=clang
+               ;;
+       esac
+
+       AC_MSG_CHECKING(version of $CC)
+       CLANG_VERSION="`$CC --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(CLANG[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
+       test -z "$CLANG_VERSION" && CLANG_VERSION=unknown
+       AC_MSG_RESULT($CLANG_VERSION)
+
+       for cf_clang_opt in \
+               -Qunused-arguments \
+               -Wno-error=implicit-function-declaration
+       do
+               AC_MSG_CHECKING(if option $cf_clang_opt works)
+               cf_save_CFLAGS="$CFLAGS"
+               CFLAGS="$CFLAGS $cf_clang_opt"
+               AC_TRY_LINK([
+                       #include <stdio.h>],[
+                       printf("hello!\\n");],[
+                       cf_clang_optok=yes],[
+                       cf_clang_optok=no])
+               AC_MSG_RESULT($cf_clang_optok)
+               CFLAGS="$cf_save_CFLAGS"
+               if test "$cf_clang_optok" = yes; then
+                       CF_VERBOSE(adding option $cf_clang_opt)
+                       CF_APPEND_TEXT(CFLAGS,$cf_clang_opt)
+               fi
+       done
+fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_CONST_X_STRING version: 1 updated: 2019/04/08 17:50:29
+dnl CF_CONST_X_STRING version: 8 updated: 2023/12/01 17:22:50
 dnl -----------------
 dnl The X11R4-X11R6 Xt specification uses an ambiguous String type for most
 dnl character-strings.
@@ -1420,7 +1699,7 @@ dnl did not take into account the use of const for telling the compiler that
 dnl string literals would be in readonly memory.
 dnl
 dnl As a workaround, one could (starting with X11R5) define XTSTRINGDEFINES, to
-dnl let the compiler decide how to represent Xt's strings which were #define'd. 
+dnl let the compiler decide how to represent Xt's strings which were #define'd.
 dnl That does not solve the problem of using the block of Xt's strings which
 dnl are compiled into the library (and is less efficient than one might want).
 dnl
@@ -1429,16 +1708,21 @@ dnl when compiling the library and compiling using the library, to tell the
 dnl compiler that String is const.
 AC_DEFUN([CF_CONST_X_STRING],
 [
+AC_REQUIRE([AC_PATH_XTRA])
+
+CF_SAVE_XTRA_FLAGS([CF_CONST_X_STRING])
+
 AC_TRY_COMPILE(
 [
 #include <stdlib.h>
 #include <X11/Intrinsic.h>
 ],
-[String foo = malloc(1)],[
+[String foo = malloc(1); free((void*)foo)],[
 
 AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
        AC_TRY_COMPILE(
                [
+#undef  _CONST_X_STRING
 #define _CONST_X_STRING        /* X11R7.8 (perhaps) */
 #undef  XTSTRINGDEFINES        /* X11R5 and later */
 #include <stdlib.h>
@@ -1450,7 +1734,9 @@ AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
                ])
 ])
 
-case $cf_cv_const_x_string in
+CF_RESTORE_XTRA_FLAGS([CF_CONST_X_STRING])
+
+case "$cf_cv_const_x_string" in
 (no)
        CF_APPEND_TEXT(CPPFLAGS,-DXTSTRINGDEFINES)
        ;;
@@ -1462,6 +1748,42 @@ esac
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_CPP_OVERRIDE version: 1 updated: 2022/08/20 16:07:10
+dnl ---------------
+dnl Check if the C++ compiler accepts the override keyword.  This is a C++-11
+dnl feature.
+AC_DEFUN([CF_CPP_OVERRIDE],
+[
+if test -n "$CXX"; then
+AC_CACHE_CHECK(if $CXX accepts override keyword,cf_cv_cpp_override,[
+       AC_LANG_SAVE
+       AC_LANG_CPLUSPLUS
+       AC_TRY_RUN([
+
+class base
+{
+public:
+       virtual int foo(float x) = 0; 
+};
+
+
+class derived: public base
+{
+public:
+       int foo(float x) override { return x != 0.0 ? 1 : 0; }
+};
+
+int main(void) { }
+],
+       [cf_cv_cpp_override=yes],
+       [cf_cv_cpp_override=no],
+       [cf_cv_cpp_override=unknown])
+       AC_LANG_RESTORE
+])
+fi
+test "$cf_cv_cpp_override" = yes && AC_DEFINE(CPP_HAS_OVERRIDE,1,[Define to 1 if C++ has override keyword])
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_CPP_PARAM_INIT version: 7 updated: 2017/01/21 11:06:25
 dnl -----------------
 dnl Check if the C++ compiler accepts duplicate parameter initialization.  This
@@ -1553,13 +1875,13 @@ fi
 test "$cf_cv_cpp_static_cast" = yes && AC_DEFINE(CPP_HAS_STATIC_CAST,1,[Define to 1 if C++ has static_cast])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CXX_AR_FLAGS version: 2 updated: 2015/04/17 21:13:04
+dnl CF_CXX_AR_FLAGS version: 3 updated: 2021/01/01 13:31:04
 dnl ---------------
 dnl Setup special archiver flags for given compilers.
 AC_DEFUN([CF_CXX_AR_FLAGS],[
        CXX_AR='$(AR)'
        CXX_ARFLAGS='$(ARFLAGS)'
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (irix*)
            if test "$GXX" != yes ; then
                CXX_AR='$(CXX)'
@@ -1637,12 +1959,12 @@ fi
 AC_SUBST($1)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_DIRNAME version: 4 updated: 2002/12/21 19:25:52
+dnl CF_DIRNAME version: 5 updated: 2020/12/31 20:19:42
 dnl ----------
 dnl "dirname" is not portable, so we fake it with a shell script.
-AC_DEFUN([CF_DIRNAME],[$1=`echo $2 | sed -e 's%/[[^/]]*$%%'`])dnl
+AC_DEFUN([CF_DIRNAME],[$1=`echo "$2" | sed -e 's%/[[^/]]*$%%'`])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_DIRS_TO_MAKE version: 3 updated: 2002/02/23 20:38:31
+dnl CF_DIRS_TO_MAKE version: 4 updated: 2021/01/01 13:31:04
 dnl ---------------
 AC_DEFUN([CF_DIRS_TO_MAKE],
 [
@@ -1652,20 +1974,20 @@ do
        CF_OBJ_SUBDIR($cf_item,cf_subdir)
        for cf_item2 in $DIRS_TO_MAKE
        do
-               test $cf_item2 = $cf_subdir && break
+               test "$cf_item2" = "$cf_subdir" && break
        done
        test ".$cf_item2" != ".$cf_subdir" && DIRS_TO_MAKE="$DIRS_TO_MAKE $cf_subdir"
 done
 for cf_dir in $DIRS_TO_MAKE
 do
-       test ! -d $cf_dir && mkdir $cf_dir
+       test ! -d "$cf_dir" && mkdir "$cf_dir"
 done
 AC_SUBST(DIRS_TO_MAKE)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_DISABLE_ECHO version: 13 updated: 2015/04/18 08:56:57
+dnl CF_DISABLE_ECHO version: 14 updated: 2021/09/04 06:35:04
 dnl ---------------
-dnl You can always use "make -n" to see the actual options, but it's hard to
+dnl You can always use "make -n" to see the actual options, but it is hard to
 dnl pick out/analyze warning messages when the compile-line is long.
 dnl
 dnl Sets:
@@ -1711,7 +2033,7 @@ CF_ARG_DISABLE(gnat-projects,
 AC_MSG_RESULT($enable_gnat_projects)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_DISABLE_LEAKS version: 7 updated: 2012/10/02 20:55:03
+dnl CF_DISABLE_LEAKS version: 9 updated: 2021/04/03 16:41:50
 dnl ----------------
 dnl Combine no-leak checks with the libraries or tools that are used for the
 dnl checks.
@@ -1724,11 +2046,13 @@ AC_REQUIRE([CF_WITH_VALGRIND])
 AC_MSG_CHECKING(if you want to perform memory-leak testing)
 AC_ARG_ENABLE(leaks,
        [  --disable-leaks         test: free permanent memory, analyze leaks],
-       [if test "x$enableval" = xno; then with_no_leaks=yes; else with_no_leaks=no; fi],
-       : ${with_no_leaks:=no})
+       [enable_leaks=$enableval],
+       [enable_leaks=yes])
+dnl with_no_leaks is more readable...
+if test "x$enable_leaks" = xno; then with_no_leaks=yes; else with_no_leaks=no; fi
 AC_MSG_RESULT($with_no_leaks)
 
-if test "$with_no_leaks" = yes ; then
+if test "$enable_leaks" = no ; then
        AC_DEFINE(NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
        AC_DEFINE(YY_NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
 fi
@@ -1775,7 +2099,7 @@ AC_SUBST(ABI_VERSION)
 AC_SUBST(LIBTOOL_VERSION)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_DISABLE_RPATH_HACK version: 2 updated: 2011/02/13 13:31:33
+dnl CF_DISABLE_RPATH_HACK version: 3 updated: 2021/01/05 20:14:44
 dnl ---------------------
 dnl The rpath-hack makes it simpler to build programs, particularly with the
 dnl *BSD ports which may have essential libraries in unusual places.  But it
@@ -1786,15 +2110,40 @@ AC_DEFUN([CF_DISABLE_RPATH_HACK],
 AC_MSG_CHECKING(if rpath-hack should be disabled)
 CF_ARG_DISABLE(rpath-hack,
        [  --disable-rpath-hack    don't add rpath options for additional libraries],
-       [cf_disable_rpath_hack=yes],
-       [cf_disable_rpath_hack=no])
+       [enable_rpath_hack=no],
+       [enable_rpath_hack=yes])
+dnl TODO - drop cf_disable_rpath_hack
+if test "x$enable_rpath_hack" = xno; then cf_disable_rpath_hack=yes; else cf_disable_rpath_hack=no; fi
 AC_MSG_RESULT($cf_disable_rpath_hack)
-if test "$cf_disable_rpath_hack" = no ; then
+
+if test "$enable_rpath_hack" = yes ; then
        CF_RPATH_HACK
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_ENABLE_PC_FILES version: 13 updated: 2015/11/01 05:27:39
+dnl CF_ENABLE_BROKEN_LINKER version: 2 updated: 2021/01/02 17:09:14
+dnl -----------------------
+dnl Some linkers cannot reference a data-only object.  Cygwin used to be one.
+dnl This usually follows CF_LINK_DATAONLY, but is not required in case we need
+dnl an unconditional feature.
+AC_DEFUN([CF_ENABLE_BROKEN_LINKER],[
+
+AC_MSG_CHECKING(if you want broken-linker support code)
+AC_ARG_ENABLE(broken_linker,
+       [  --enable-broken_linker  compile with broken-linker support code],
+       [with_broken_linker=$enableval],
+       [with_broken_linker=no])
+AC_MSG_RESULT($with_broken_linker)
+
+: "${BROKEN_LINKER:=0}"
+if test "x$with_broken_linker" = xyes ; then
+       AC_DEFINE(BROKEN_LINKER,1,[Define to 1 to work around linkers which cannot link data-only modules])
+       BROKEN_LINKER=1
+fi
+AC_SUBST(BROKEN_LINKER)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_ENABLE_PC_FILES version: 16 updated: 2021/11/20 12:48:37
 dnl ------------------
 dnl This is the "--enable-pc-files" option, which is available if there is a
 dnl pkg-config configuration on the local machine.
@@ -1819,11 +2168,12 @@ if test "x$enable_pc_files" != xno
 then
        MAKE_PC_FILES=
        case "x$PKG_CONFIG_LIBDIR" in
-       (xno|xyes)
+       (xno|xnone|xyes|x)
                AC_MSG_WARN(no PKG_CONFIG_LIBDIR was found)
                ;;
        (*)
-               CF_PATH_SYNTAX(PKG_CONFIG_LIBDIR)
+               cf_pkg_config_libdir="$PKG_CONFIG_LIBDIR"
+               CF_PATH_SYNTAX(cf_pkg_config_libdir)
                ;;
        esac
 else
@@ -1846,7 +2196,7 @@ AC_ARG_ENABLE(rpath,
 AC_MSG_RESULT($cf_cv_enable_rpath)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ENABLE_STRING_HACKS version: 5 updated: 2016/10/08 17:34:11
+dnl CF_ENABLE_STRING_HACKS version: 6 updated: 2021/01/05 19:23:48
 dnl ----------------------
 dnl On a few platforms, the compiler and/or loader nags with untruthful
 dnl comments stating that "most" uses of strcat/strcpy/sprintf are incorrect,
@@ -1866,11 +2216,11 @@ AC_DEFUN([CF_ENABLE_STRING_HACKS],
 AC_MSG_CHECKING(if you want to work around bogus compiler/loader warnings)
 AC_ARG_ENABLE(string-hacks,
        [  --enable-string-hacks   work around bogus compiler/loader warnings],
-       [with_string_hacks=$enableval],
-       [with_string_hacks=no])
-AC_MSG_RESULT($with_string_hacks)
+       [enable_string_hacks=$enableval],
+       [enable_string_hacks=no])
+AC_MSG_RESULT($enable_string_hacks)
 
-if test "x$with_string_hacks" = "xyes"; then
+if test "x$enable_string_hacks" = "xyes"; then
        AC_DEFINE(USE_STRING_HACKS,1,[Define to 1 to work around bogus compiler/loader warnings])
        AC_MSG_WARN(enabling string-hacks to work around bogus compiler/loader warnings)
        AC_CHECK_FUNC(strlcat,[
@@ -1886,6 +2236,36 @@ if test "x$with_string_hacks" = "xyes"; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_ENABLE_WARNINGS version: 9 updated: 2021/01/05 19:40:50
+dnl ------------------
+dnl Configure-option to enable gcc warnings
+dnl
+dnl $1 = extra options to add, if supported
+dnl $2 = option for checking attributes.  By default, this is done when
+dnl      warnings are enabled.  For other values:
+dnl      yes: always do this, e.g., to use in generated library-headers
+dnl      no: never do this
+AC_DEFUN([CF_ENABLE_WARNINGS],[
+if test "$GCC" = yes || test "$GXX" = yes
+then
+CF_FIX_WARNINGS(CFLAGS)
+CF_FIX_WARNINGS(CPPFLAGS)
+CF_FIX_WARNINGS(LDFLAGS)
+AC_MSG_CHECKING(if you want to turn on gcc warnings)
+CF_ARG_ENABLE(warnings,
+       [  --enable-warnings       test: turn on gcc compiler warnings],
+       [enable_warnings=yes],
+       [enable_warnings=no])
+AC_MSG_RESULT($enable_warnings)
+if test "$enable_warnings" = "yes"
+then
+       ifelse($2,,[CF_GCC_ATTRIBUTES])
+       CF_GCC_WARNINGS($1)
+fi
+ifelse($2,yes,[CF_GCC_ATTRIBUTES])
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_ERRNO version: 5 updated: 1997/11/30 12:44:39
 dnl --------
 dnl Check if 'errno' is declared in <errno.h>
@@ -1894,7 +2274,7 @@ AC_DEFUN([CF_ERRNO],
 CF_CHECK_ERRNO(errno)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ETIP_DEFINES version: 5 updated: 2012/02/18 17:51:07
+dnl CF_ETIP_DEFINES version: 7 updated: 2023/10/28 11:59:01
 dnl ---------------
 dnl Test for conflicting definitions of exception in gcc 2.8.0, etc., between
 dnl math.h and builtin.h, only for ncurses
@@ -1907,7 +2287,7 @@ cf_result="none"
 # etip.h includes ncurses.h which includes ncurses_dll.h
 # But ncurses_dll.h is generated - fix here.
 test -d include || mkdir include
-test -f include/ncurses_dll.h || sed -e 's/@NCURSES_WRAP_PREFIX@/'$NCURSES_WRAP_PREFIX'/g' ${srcdir}/include/ncurses_dll.h.in >include/ncurses_dll.h
+test -f include/ncurses_dll.h || sed -e 's/@NCURSES_WRAP_PREFIX@/'$NCURSES_WRAP_PREFIX'/g' "${srcdir}/include/ncurses_dll.h.in" >include/ncurses_dll.h
 
 for cf_math in "" MATH_H
 do
@@ -1926,11 +2306,11 @@ AC_TRY_COMPILE([
 ],[])
 done
 done
-AC_MSG_RESULT($cf_result)
+AC_MSG_RESULT([${cf_result:-(none)}])
 CXXFLAGS="$cf_save_CXXFLAGS"
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_FIND_LINKAGE version: 21 updated: 2018/06/20 20:23:13
+dnl CF_FIND_LINKAGE version: 22 updated: 2020/12/31 20:19:42
 dnl ---------------
 dnl Find a library (specifically the linkage used in the code fragment),
 dnl searching for it if it is not already in the library path.
@@ -1987,7 +2367,7 @@ AC_TRY_LINK([$1],[$2],[
        CF_HEADER_PATH(cf_search,ifelse([$6],,[$3],[$6]))
        for cf_cv_header_path_$3 in $cf_search
        do
-               if test -d $cf_cv_header_path_$3 ; then
+               if test -d "$cf_cv_header_path_$3" ; then
                        CF_VERBOSE(... testing $cf_cv_header_path_$3)
                        CPPFLAGS="$cf_save_CPPFLAGS"
                        CF_APPEND_TEXT(CPPFLAGS,-I$cf_cv_header_path_$3)
@@ -2022,7 +2402,7 @@ AC_TRY_LINK([$1],[$2],[
                        CF_LIBRARY_PATH(cf_search,$3)
                        for cf_cv_library_path_$3 in $cf_search
                        do
-                               if test -d $cf_cv_library_path_$3 ; then
+                               if test -d "$cf_cv_library_path_$3" ; then
                                        CF_VERBOSE(... testing $cf_cv_library_path_$3)
                                        CPPFLAGS="$cf_test_CPPFLAGS"
                                        LIBS="-l$3 $7 $cf_save_LIBS"
@@ -2061,7 +2441,7 @@ ifelse([$5],,AC_MSG_WARN(Cannot find $3 library),[$5])
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FIND_SUB_INCDIR version: 2 updated: 2015/04/17 21:13:04
+dnl CF_FIND_SUB_INCDIR version: 3 updated: 2021/01/01 13:31:04
 dnl ------------------
 dnl Find an include-directory with the given leaf-name.  This is useful for
 dnl example with FreeBSD ports, which use this convention to distinguish
@@ -2070,7 +2450,7 @@ AC_DEFUN([CF_FIND_SUB_INCDIR],[
        CF_SUBDIR_PATH(cf_search,$1,include)
        for cf_item in $cf_search
        do
-               case $cf_item in
+               case "$cf_item" in
                (*/$1)
                        CF_ADD_INCDIR($cf_item)
                        ;;
@@ -2078,7 +2458,7 @@ AC_DEFUN([CF_FIND_SUB_INCDIR],[
        done
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FIND_SUB_LIBDIR version: 2 updated: 2015/04/17 21:13:04
+dnl CF_FIND_SUB_LIBDIR version: 3 updated: 2021/01/01 13:31:04
 dnl ------------------
 dnl Find a library-directory with the given leaf-name.  This is useful for
 dnl example with FreeBSD ports, which use this convention to distinguish
@@ -2087,7 +2467,7 @@ AC_DEFUN([CF_FIND_SUB_LIBDIR],[
        CF_SUBDIR_PATH(cf_search,$1,lib)
        for cf_item in $cf_search
        do
-               case $cf_item in
+               case "$cf_item" in
                (*/$1)
                        CF_ADD_LIBDIR($cf_item)
                        ;;
@@ -2114,7 +2494,47 @@ AC_DEFUN([CF_FIXUP_ADAFLAGS],[
        AC_MSG_RESULT($ADAFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FOPEN_BIN_R version: 1 updated: 2019/03/30 17:52:21
+dnl CF_FIX_WARNINGS version: 4 updated: 2021/12/16 18:22:31
+dnl ---------------
+dnl Warning flags do not belong in CFLAGS, CPPFLAGS, etc.  Any of gcc's
+dnl "-Werror" flags can interfere with configure-checks.  Those go into
+dnl EXTRA_CFLAGS.
+dnl
+dnl $1 = variable name to repair
+define([CF_FIX_WARNINGS],[
+if test "$GCC" = yes || test "$GXX" = yes
+then
+       case [$]$1 in
+       (*-Werror=*)
+               cf_temp_flags=
+               for cf_temp_scan in [$]$1
+               do
+                       case "x$cf_temp_scan" in
+                       (x-Werror=format*)
+                               CF_APPEND_TEXT(cf_temp_flags,$cf_temp_scan)
+                               ;;
+                       (x-Werror=*)
+                               CF_APPEND_TEXT(EXTRA_CFLAGS,$cf_temp_scan)
+                               ;;
+                       (*)
+                               CF_APPEND_TEXT(cf_temp_flags,$cf_temp_scan)
+                               ;;
+                       esac
+               done
+               if test "x[$]$1" != "x$cf_temp_flags"
+               then
+                       CF_VERBOSE(repairing $1: [$]$1)
+                       $1="$cf_temp_flags"
+                       CF_VERBOSE(... fixed [$]$1)
+                       CF_VERBOSE(... extra $EXTRA_CFLAGS)
+               fi
+               ;;
+       esac
+fi
+AC_SUBST(EXTRA_CFLAGS)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_FOPEN_BIN_R version: 3 updated: 2023/01/05 18:05:46
 dnl --------------
 dnl Check if fopen works when the "b" (binary) flag is added to the mode
 dnl parameter.  POSIX ignores the "b", which c89 specified.  Some very old
@@ -2122,8 +2542,10 @@ dnl systems do not accept it.
 AC_DEFUN([CF_FOPEN_BIN_R],[
 AC_CACHE_CHECK(if fopen accepts explicit binary mode,cf_cv_fopen_bin_r,[
        AC_TRY_RUN([
-#include <stdio.h>
-int main(void) {
+$ac_includes_default
+
+int main(void)
+{
        FILE *fp = fopen("conftest.tmp", "wb");
        int rc = 0;
        if (fp != 0) {
@@ -2154,7 +2576,7 @@ int main(void) {
                [cf_cv_fopen_bin_r=no],
                [cf_cv_fopen_bin_r=unknown])
 ])
-test "x$cf_cv_fopen_bin_r" != xno && AC_DEFINE(USE_FOPEN_BIN_R)
+test "x$cf_cv_fopen_bin_r" != xno && AC_DEFINE(USE_FOPEN_BIN_R,1,[Define to 1 if fopen accepts explicit binary mode])
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_FORGET_TOOL version: 1 updated: 2013/04/06 18:03:09
@@ -2201,7 +2623,91 @@ else
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_MEMMOVE version: 9 updated: 2017/01/21 11:06:25
+dnl CF_FUNC_GETTIME version: 2 updated: 2023/02/25 08:45:56
+dnl ---------------
+dnl Check for gettimeofday or clock_gettime.  In 2023, the former is still more
+dnl widely supported, but "deprecated" (2008), so we will use the latter if it
+dnl is available, to reduce compiler warnings.
+AC_DEFUN([CF_FUNC_GETTIME],[
+AC_CACHE_CHECK(for clock_gettime,cf_cv_func_clock_gettime,[
+               AC_TRY_LINK([#include <time.h>],
+               [struct timespec ts;
+               int rc = clock_gettime(CLOCK_REALTIME, &ts); (void) rc; (void)ts],
+               [cf_cv_func_clock_gettime=yes],
+               [cf_cv_func_clock_gettime=no])
+])
+
+if test "$cf_cv_func_clock_gettime" = yes
+then
+       AC_DEFINE(HAVE_CLOCK_GETTIME,1,[Define to 1 if we have clock_gettime function])
+else
+AC_CHECK_FUNC(gettimeofday,
+       AC_DEFINE(HAVE_GETTIMEOFDAY,1,[Define to 1 if we have gettimeofday function]),[
+
+AC_CHECK_LIB(bsd, gettimeofday,
+       AC_DEFINE(HAVE_GETTIMEOFDAY,1,[Define to 1 if we have gettimeofday function])
+       CF_ADD_LIB(bsd))])dnl CLIX: bzero, select, gettimeofday
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_FUNC_GETTTYNAM version: 2 updated: 2023/01/05 18:06:28
+dnl -----------------
+dnl Check if the 4.3BSD function getttyname exists, as well as if <ttyent.h>
+dnl defines the _PATH_TTYS symbol.  If the corresponding file exists, but the
+dnl other checks fail, just define HAVE_PATH_TTYS.
+AC_DEFUN([CF_FUNC_GETTTYNAM],[
+AC_CACHE_CHECK(if _PATH_TTYS is defined in ttyent.h,cf_cv_PATH_TTYS,[
+AC_TRY_COMPILE([
+#include <stdio.h>
+#include <ttyent.h>],[
+FILE *fp = fopen(_PATH_TTYS, "r"); (void)fp],
+       [cf_cv_PATH_TTYS=yes],
+       [cf_cv_PATH_TTYS=no])])
+
+if test $cf_cv_PATH_TTYS = no
+then
+       for cf_ttys in /etc/ttytype /etc/ttys
+       do
+               if test -f $cf_ttys
+               then
+                       cf_cv_PATH_TTYS=maybe
+                       AC_DEFINE(_PATH_TTYS,$cf_ttys,[define to pathname of file containing mapping from tty name to terminal type])
+                       break
+               fi
+       done
+fi
+
+if test $cf_cv_PATH_TTYS != no
+then
+       AC_CACHE_CHECK(if _PATH_TTYS file exists,cf_cv_have_PATH_TTYS,[
+               AC_TRY_RUN([
+$ac_includes_default
+
+#include <ttyent.h>
+
+int main(void) {
+       FILE *fp = fopen(_PATH_TTYS, "r");
+       ${cf_cv_main_return:-return} (fp == 0);
+}],
+                       [cf_cv_have_PATH_TTYS=yes],
+                       [cf_cv_have_PATH_TTYS=no],
+                       [cf_cv_have_PATH_TTYS=unknown])])
+       test "$cf_cv_have_PATH_TTYS" = no && cf_cv_PATH_TTYS=no
+fi
+
+if test $cf_cv_PATH_TTYS != no
+then
+       AC_DEFINE(HAVE_PATH_TTYS,1,[define to 1 if system can map tty name to terminal type])
+       AC_CACHE_CHECK(for getttynam,cf_cv_func_getttynam,[
+               AC_TRY_LINK([#include <ttyent.h>],
+               [struct ttyent *fp = getttynam("/dev/tty"); (void)fp],
+               [cf_cv_func_getttynam=yes],
+               [cf_cv_func_getttynam=no])])
+       test "$cf_cv_func_getttynam" = yes && AC_DEFINE(HAVE_GETTTYNAM)
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_FUNC_MEMMOVE version: 10 updated: 2023/01/05 18:51:28
 dnl ---------------
 dnl Check for memmove, or a bcopy that can handle overlapping copy.  If neither
 dnl is found, add our own version of memmove to the list of objects.
@@ -2211,6 +2717,8 @@ AC_CHECK_FUNC(memmove,,[
 AC_CHECK_FUNC(bcopy,[
        AC_CACHE_CHECK(if bcopy does overlapping moves,cf_cv_good_bcopy,[
                AC_TRY_RUN([
+$ac_includes_default
+
 int main(void) {
        static char data[] = "abcdefghijklmnopqrstuwwxyz";
        char temp[40];
@@ -2232,14 +2740,15 @@ int main(void) {
        fi
 ])])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_NANOSLEEP version: 5 updated: 2017/01/21 11:06:25
+dnl CF_FUNC_NANOSLEEP version: 6 updated: 2023/01/05 18:51:33
 dnl -----------------
 dnl Check for existence of workable nanosleep() function.  Some systems, e.g.,
 dnl AIX 4.x, provide a non-working version.
 AC_DEFUN([CF_FUNC_NANOSLEEP],[
 AC_CACHE_CHECK(if nanosleep really works,cf_cv_func_nanosleep,[
 AC_TRY_RUN([
-#include <stdio.h>
+$ac_includes_default
+
 #include <errno.h>
 #include <time.h>
 
@@ -2266,7 +2775,7 @@ int main(void) {
 test "$cf_cv_func_nanosleep" = "yes" && AC_DEFINE(HAVE_NANOSLEEP,1,[Define to 1 if we have nanosleep()])
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_OPENPTY version: 5 updated: 2015/09/12 14:46:50
+dnl CF_FUNC_OPENPTY version: 7 updated: 2023/12/03 09:21:34
 dnl ---------------
 dnl Check for openpty() function, along with <pty.h> header.  It may need the
 dnl "util" library as well.
@@ -2275,7 +2784,7 @@ AC_DEFUN([CF_FUNC_OPENPTY],
 AC_CHECK_LIB(util,openpty,cf_cv_lib_util=yes,cf_cv_lib_util=no)
 AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
        cf_save_LIBS="$LIBS"
-       test $cf_cv_lib_util = yes && { CF_ADD_LIB(util) }
+       test "$cf_cv_lib_util" = yes && { CF_ADD_LIB(util) }
        for cf_header in pty.h libutil.h util.h
        do
        AC_TRY_LINK([
@@ -2283,6 +2792,7 @@ AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
 ],[
        int x = openpty((int *)0, (int *)0, (char *)0,
                                   (struct termios *)0, (struct winsize *)0);
+       (void)x;
 ],[
                cf_cv_func_openpty=$cf_header
                break
@@ -2294,23 +2804,24 @@ AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_POLL version: 9 updated: 2015/10/10 13:27:32
+dnl CF_FUNC_POLL version: 11 updated: 2023/01/05 18:51:40
 dnl ------------
 dnl See if the poll function really works.  Some platforms have poll(), but
 dnl it does not work for terminals or files.
 AC_DEFUN([CF_FUNC_POLL],[
-tty 2>&1 >/dev/null || { AC_CHECK_FUNCS(posix_openpt) }
+tty >/dev/null 2>&1 || { AC_CHECK_FUNCS(posix_openpt) }
 AC_CACHE_CHECK(if poll really works,cf_cv_working_poll,[
 AC_TRY_RUN([
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
+$ac_includes_default
+
 #include <fcntl.h>
+
 #ifdef HAVE_POLL_H
 #include <poll.h>
 #else
 #include <sys/poll.h>
 #endif
+
 int main(void) {
        struct pollfd myfds;
        int ret;
@@ -2384,19 +2895,29 @@ tcgetattr(1, &foo);],
 test "$cf_cv_have_tcgetattr" = yes && AC_DEFINE(HAVE_TCGETATTR,1,[Define to 1 if we have tcgetattr])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_VSSCANF version: 6 updated: 2015/04/18 08:56:57
+dnl CF_FUNC_VSSCANF version: 8 updated: 2023/12/03 19:09:59
 dnl ---------------
 dnl Check for vsscanf() function, which is in c9x but generally not in earlier
-dnl versions of C.  It is in the GNU C library, and can often be simulated by
-dnl other functions.
+dnl versions of C.  It can often be simulated by other functions on older
+dnl systems (where FILE is not opaque).
 AC_DEFUN([CF_FUNC_VSSCANF],
 [
 AC_CACHE_CHECK(for vsscanf function or workaround,cf_cv_func_vsscanf,[
 AC_TRY_LINK([
 #include <stdarg.h>
-#include <stdio.h>],[
+#include <stdio.h>
+
+static void
+myfunc(const char *str, const char *fmt, ...)
+{
        va_list ap;
-       vsscanf("from", "%d", ap)],[cf_cv_func_vsscanf=vsscanf],[
+       va_start(ap, fmt);
+       vsscanf(str, fmt, ap);
+       va_end(ap);
+}
+],[
+       myfunc("55", "%d");
+],[cf_cv_func_vsscanf=vsscanf],[
 AC_TRY_LINK([
 #include <stdarg.h>
 #include <stdio.h>],[
@@ -2421,7 +2942,7 @@ AC_TRY_LINK([
        return (_doscan(&strbuf, "%d", ap))],[cf_cv_func_vsscanf=_doscan],[
 cf_cv_func_vsscanf=no])])])])
 
-case $cf_cv_func_vsscanf in
+case "$cf_cv_func_vsscanf" in
 (vsscanf) AC_DEFINE(HAVE_VSSCANF,1,[Define to 1 if we have vsscanf]);;
 (vfscanf) AC_DEFINE(HAVE_VFSCANF,1,[Define to 1 if we have vfscanf]);;
 (_doscan) AC_DEFINE(HAVE__DOSCAN,1,[Define to 1 if we have _doscan]);;
@@ -2429,14 +2950,16 @@ esac
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GCC_ATTRIBUTES version: 17 updated: 2015/04/12 15:39:00
+dnl CF_GCC_ATTRIBUTES version: 24 updated: 2021/03/20 12:00:25
 dnl -----------------
 dnl Test for availability of useful gcc __attribute__ directives to quiet
 dnl compiler warnings.  Though useful, not all are supported -- and contrary
 dnl to documentation, unrecognized directives cause older compilers to barf.
 AC_DEFUN([CF_GCC_ATTRIBUTES],
-[
-if test "$GCC" = yes
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+AC_REQUIRE([CF_C11_NORETURN])dnl
+
+if test "$GCC" = yes || test "$GXX" = yes
 then
 cat > conftest.i <<EOF
 #ifndef GCC_PRINTF
@@ -2455,8 +2978,9 @@ EOF
 if test "$GCC" = yes
 then
        AC_CHECKING([for $CC __attribute__ directives])
-cat > conftest.$ac_ext <<EOF
+cat > "conftest.$ac_ext" <<EOF
 #line __oline__ "${as_me:-configure}"
+#include <stdio.h>
 #include "confdefs.h"
 #include "conftest.h"
 #include "conftest.i"
@@ -2471,9 +2995,9 @@ cat > conftest.$ac_ext <<EOF
 #define GCC_SCANFLIKE(fmt,var)  /*nothing*/
 #endif
 extern void wow(char *,...) GCC_SCANFLIKE(1,2);
-extern void oops(char *,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
-extern void foo(void) GCC_NORETURN;
-int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { return 0; }
+extern GCC_NORETURN void oops(char *,...) GCC_PRINTFLIKE(1,2);
+extern GCC_NORETURN void foo(void);
+int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { (void)argc; (void)argv; return 0; }
 EOF
        cf_printf_attribute=no
        cf_scanf_attribute=no
@@ -2483,7 +3007,7 @@ EOF
                cf_directive="__attribute__(($cf_attribute))"
                echo "checking for $CC $cf_directive" 1>&AC_FD_CC
 
-               case $cf_attribute in
+               case "$cf_attribute" in
                (printf)
                        cf_printf_attribute=yes
                        cat >conftest.h <<EOF
@@ -2506,7 +3030,7 @@ EOF
                if AC_TRY_EVAL(ac_compile); then
                        test -n "$verbose" && AC_MSG_RESULT(... $cf_attribute)
                        cat conftest.h >>confdefs.h
-                       case $cf_attribute in
+                       case "$cf_attribute" in
                        (noreturn)
                                AC_DEFINE_UNQUOTED(GCC_NORETURN,$cf_directive,[Define to noreturn-attribute for gcc])
                                ;;
@@ -2533,13 +3057,13 @@ EOF
                fi
        done
 else
-       fgrep define conftest.i >>confdefs.h
+       ${FGREP-fgrep} define conftest.i >>confdefs.h
 fi
-rm -rf conftest*
+rm -rf ./conftest*
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GCC_VERSION version: 8 updated: 2019/09/07 13:38:36
+dnl CF_GCC_VERSION version: 9 updated: 2023/03/05 14:30:13
 dnl --------------
 dnl Find version of gcc, and (because icc/clang pretend to be gcc without being
 dnl compatible), attempt to determine if icc/clang is actually used.
@@ -2548,7 +3072,7 @@ AC_REQUIRE([AC_PROG_CC])
 GCC_VERSION=none
 if test "$GCC" = yes ; then
        AC_MSG_CHECKING(version of $CC)
-       GCC_VERSION="`${CC} --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(GCC[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
+       GCC_VERSION="`${CC} --version 2>/dev/null | sed -e '2,$d' -e 's/^[[^(]]*([[^)]][[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
        test -z "$GCC_VERSION" && GCC_VERSION=unknown
        AC_MSG_RESULT($GCC_VERSION)
 fi
@@ -2556,12 +3080,13 @@ CF_INTEL_COMPILER(GCC,INTEL_COMPILER,CFLAGS)
 CF_CLANG_COMPILER(GCC,CLANG_COMPILER,CFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GCC_WARNINGS version: 36 updated: 2019/09/07 13:38:36
+dnl CF_GCC_WARNINGS version: 41 updated: 2021/01/01 16:53:59
 dnl ---------------
 dnl Check if the compiler supports useful warning options.  There's a few that
 dnl we don't use, simply because they're too noisy:
 dnl
 dnl    -Wconversion (useful in older versions of gcc, but not in gcc 2.7.x)
+dnl    -Winline (usually not worthwhile)
 dnl    -Wredundant-decls (system headers make this too noisy)
 dnl    -Wtraditional (combines too many unrelated messages, only a few useful)
 dnl    -Wwrite-strings (too noisy, but should review occasionally).  This
@@ -2579,7 +3104,7 @@ AC_DEFUN([CF_GCC_WARNINGS],
 [
 AC_REQUIRE([CF_GCC_VERSION])
 if test "x$have_x" = xyes; then CF_CONST_X_STRING fi
-cat > conftest.$ac_ext <<EOF
+cat > "conftest.$ac_ext" <<EOF
 #line __oline__ "${as_me:-configure}"
 int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
 EOF
@@ -2598,7 +3123,7 @@ then
 
        AC_CHECKING([for $CC warning options])
        cf_save_CFLAGS="$CFLAGS"
-       EXTRA_CFLAGS="-Wall"
+       EXTRA_CFLAGS="$EXTRA_CFLAGS -Wall"
        for cf_opt in \
                wd1419 \
                wd1683 \
@@ -2617,11 +3142,10 @@ then
                fi
        done
        CFLAGS="$cf_save_CFLAGS"
-elif test "$GCC" = yes
+elif test "$GCC" = yes && test "$GCC_VERSION" != "unknown"
 then
        AC_CHECKING([for $CC warning options])
        cf_save_CFLAGS="$CFLAGS"
-       EXTRA_CFLAGS=
        cf_warn_CONST=""
        test "$with_ext_const" = yes && cf_warn_CONST="Wwrite-strings"
        cf_gcc_warnings="Wignored-qualifiers Wlogical-op Wvarargs"
@@ -2639,21 +3163,21 @@ then
                Wpointer-arith \
                Wshadow \
                Wstrict-prototypes \
-               Wundef $cf_gcc_warnings $cf_warn_CONST $1
+               Wundef Wno-inline $cf_gcc_warnings $cf_warn_CONST $1
        do
                CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
                if AC_TRY_EVAL(ac_compile); then
                        test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
-                       case $cf_opt in
+                       case "$cf_opt" in
                        (Winline)
-                               case $GCC_VERSION in
+                               case "$GCC_VERSION" in
                                ([[34]].*)
                                        CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
                                        continue;;
                                esac
                                ;;
                        (Wpointer-arith)
-                               case $GCC_VERSION in
+                               case "$GCC_VERSION" in
                                ([[12]].*)
                                        CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
                                        continue;;
@@ -2665,12 +3189,12 @@ then
        done
        CFLAGS="$cf_save_CFLAGS"
 fi
-rm -rf conftest*
+rm -rf ./conftest*
 
 AC_SUBST(EXTRA_CFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GETOPT_HEADER version: 6 updated: 2014/07/22 14:45:54
+dnl CF_GETOPT_HEADER version: 8 updated: 2021/06/19 19:16:16
 dnl ----------------
 dnl Check for getopt's variables which are commonly defined in stdlib.h,
 dnl unistd.h or (nonstandard) in getopt.h
@@ -2683,15 +3207,15 @@ for cf_header in stdio.h stdlib.h unistd.h getopt.h
 do
 AC_TRY_COMPILE([
 #include <$cf_header>],
-[int x = optind; char *y = optarg],
+[int x = optind; char *y = optarg; (void)x; (void)y],
 [cf_cv_getopt_header=$cf_header
  break])
 done
 ])
-if test $cf_cv_getopt_header != none ; then
+if test "$cf_cv_getopt_header" != none ; then
        AC_DEFINE(HAVE_GETOPT_HEADER,1,[Define to 1 if getopt variables are declared in header])
 fi
-if test $cf_cv_getopt_header = getopt.h ; then
+if test "$cf_cv_getopt_header" = getopt.h ; then
        AC_DEFINE(NEED_GETOPT_H,1,[Define to 1 if we must include getopt.h])
 fi
 ])dnl
@@ -2707,15 +3231,15 @@ test "$cf_cv_gnatprep_opt_t" = yes && GNATPREP_OPTS="-T $GNATPREP_OPTS"
 AC_SUBST(GNATPREP_OPTS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNAT_GENERICS version: 3 updated: 2015/04/17 21:13:04
+dnl CF_GNAT_GENERICS version: 7 updated: 2021/01/01 13:31:04
 dnl ----------------
 AC_DEFUN([CF_GNAT_GENERICS],
 [
 AC_REQUIRE([CF_GNAT_VERSION])
 
 AC_MSG_CHECKING(if GNAT supports generics)
-case $cf_gnat_version in
-(3.[[1-9]]*|[[4-9]].*)
+case "$cf_cv_gnat_version" in
+(3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|[[1-9]][[0-9]].[[0-9]]*|20[[0-9]][[0-9]])
        cf_gnat_generics=yes
        ;;
 (*)
@@ -2737,7 +3261,7 @@ AC_SUBST(cf_compile_generics)
 AC_SUBST(cf_generic_objects)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNAT_PROJECTS version: 9 updated: 2018/01/14 15:46:09
+dnl CF_GNAT_PROJECTS version: 13 updated: 2021/01/02 17:09:14
 dnl ----------------
 dnl GNAT projects are configured with ".gpr" project files.
 dnl GNAT libraries are a further development, using the project feature.
@@ -2751,19 +3275,19 @@ cf_gnat_projects=no
 
 if test "$enable_gnat_projects" != no ; then
 AC_MSG_CHECKING(if GNAT supports project files)
-case $cf_gnat_version in
+case "$cf_cv_gnat_version" in
 (3.[[0-9]]*)
        ;;
 (*)
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (cygwin*|msys*)
                ;;
        (*)
-               rm -rf conftest* *~conftest*
+               rm -rf ./conftest* ./*~conftest*
                if mkdir conftest.src conftest.bin conftest.lib
                then
                        cd conftest.src
-                       rm -rf conftest* *~conftest*
+                       rm -rf ./conftest* ./*~conftest*
                        cat >>library.gpr <<CF_EOF
 project Library is
   Kind := External ("LIB_KIND");
@@ -2792,11 +3316,11 @@ package body ConfPackage is
    end conftest;
 end ConfPackage;
 CF_EOF
-                       if ( $cf_ada_make $ADAFLAGS \
+                       if ( "$cf_ada_make" $ADAFLAGS \
                                        -Plibrary.gpr \
-                                       -XBUILD_DIR=`cd ../conftest.bin;pwd` \
-                                       -XLIBRARY_DIR=`cd ../conftest.lib;pwd` \
-                                       -XSOURCE_DIR=`pwd` \
+                                       -XBUILD_DIR="`cd ../conftest.bin;pwd`" \
+                                       -XLIBRARY_DIR="`cd ../conftest.lib;pwd`" \
+                                       -XSOURCE_DIR="`pwd`" \
                                        -XSONAME=libConfTest.so.1 \
                                        -XLIB_KIND=static 1>&AC_FD_CC 2>&1 ) ; then
                                cf_gnat_projects=yes
@@ -2807,7 +3331,7 @@ CF_EOF
                then
                        cf_gnat_libraries=yes
                fi
-               rm -rf conftest* *~conftest*
+               rm -rf ./conftest* ./*~conftest*
                ;;
        esac
        ;;
@@ -2815,19 +3339,30 @@ esac
 AC_MSG_RESULT($cf_gnat_projects)
 fi # enable_gnat_projects
 
-if test $cf_gnat_projects = yes
+if test "$cf_gnat_projects" = yes
 then
        AC_MSG_CHECKING(if GNAT supports libraries)
        AC_MSG_RESULT($cf_gnat_libraries)
 fi
 
+USE_OLD_MAKERULES=""
+USE_GNAT_PROJECTS="#"
+USE_GNAT_MAKE_GPR="#"
+USE_GNAT_GPRBUILD="#"
+
 if test "$cf_gnat_projects" = yes
 then
        USE_OLD_MAKERULES="#"
        USE_GNAT_PROJECTS=""
-else
-       USE_OLD_MAKERULES=""
-       USE_GNAT_PROJECTS="#"
+       if test "$cf_cv_VERSION_GPRBUILD" != no
+       then
+               USE_GNAT_GPRBUILD=""
+       elif test "$cf_cv_VERSION_GNATMAKE" != no
+       then
+               USE_GNAT_MAKE_GPR=""
+       else
+               AC_MSG_WARN(use old makefile rules since tools are missing)
+       fi
 fi
 
 if test "$cf_gnat_libraries" = yes
@@ -2840,9 +3375,11 @@ fi
 AC_SUBST(USE_OLD_MAKERULES)
 AC_SUBST(USE_GNAT_PROJECTS)
 AC_SUBST(USE_GNAT_LIBRARIES)
+AC_SUBST(USE_GNAT_MAKE_GPR)
+AC_SUBST(USE_GNAT_GPRBUILD)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNAT_SIGINT version: 1 updated: 2011/03/27 20:07:59
+dnl CF_GNAT_SIGINT version: 2 updated: 2021/01/01 13:31:04
 dnl --------------
 dnl Check if gnat supports SIGINT, and presumably tasking.  For the latter, it
 dnl is noted that gnat may compile a tasking unit even for configurations which
@@ -2881,7 +3418,7 @@ end ConfTest;],
        [cf_cv_gnat_sigint=yes],
        [cf_cv_gnat_sigint=no])])
 
-if test $cf_cv_gnat_sigint = yes ; then
+if test "$cf_cv_gnat_sigint" = yes ; then
        USE_GNAT_SIGINT=""
 else
        USE_GNAT_SIGINT="#"
@@ -2889,7 +3426,7 @@ fi
 AC_SUBST(USE_GNAT_SIGINT)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNAT_TRY_LINK version: 3 updated: 2011/03/19 14:47:45
+dnl CF_GNAT_TRY_LINK version: 4 updated: 2021/01/01 13:31:04
 dnl ----------------
 dnl Verify that a test program compiles/links with GNAT.
 dnl $cf_ada_make is set to the program that compiles/links
@@ -2901,22 +3438,22 @@ dnl $3 is the shell command to execute if successful
 dnl $4 is the shell command to execute if not successful
 AC_DEFUN([CF_GNAT_TRY_LINK],
 [
-rm -rf conftest* *~conftest*
+rm -rf ./conftest* ./*~conftest*
 cat >>conftest.ads <<CF_EOF
 $1
 CF_EOF
 cat >>conftest.adb <<CF_EOF
 $2
 CF_EOF
-if ( $cf_ada_make $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
+if ( "$cf_ada_make" $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
 ifelse($3,,      :,[      $3])
 ifelse($4,,,[else
    $4])
 fi
-rm -rf conftest* *~conftest*
+rm -rf ./conftest* ./*~conftest*
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNAT_TRY_RUN version: 5 updated: 2011/03/19 14:47:45
+dnl CF_GNAT_TRY_RUN version: 6 updated: 2021/01/01 13:31:04
 dnl ---------------
 dnl Verify that a test program compiles and runs with GNAT
 dnl $cf_ada_make is set to the program that compiles/links
@@ -2928,14 +3465,14 @@ dnl $3 is the shell command to execute if successful
 dnl $4 is the shell command to execute if not successful
 AC_DEFUN([CF_GNAT_TRY_RUN],
 [
-rm -rf conftest* *~conftest*
+rm -rf ./conftest* ./*~conftest*
 cat >>conftest.ads <<CF_EOF
 $1
 CF_EOF
 cat >>conftest.adb <<CF_EOF
 $2
 CF_EOF
-if ( $cf_ada_make $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
+if ( "$cf_ada_make" $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
    if ( ./conftest 1>&AC_FD_CC 2>&1 ) ; then
 ifelse($3,,      :,[      $3])
 ifelse($4,,,[   else
@@ -2944,30 +3481,24 @@ ifelse($4,,,[   else
 ifelse($4,,,[else
    $4])
 fi
-rm -rf conftest* *~conftest*
+rm -rf ./conftest* ./*~conftest*
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNAT_VERSION version: 20 updated: 2015/04/18 08:56:57
+dnl CF_GNAT_VERSION version: 22 updated: 2019/12/31 08:53:54
 dnl ---------------
-dnl Verify version of GNAT.
+dnl $1 = cache variable to update
+dnl $2 = program name
+dnl Verify version of GNAT or related tool
 AC_DEFUN([CF_GNAT_VERSION],
 [
-AC_MSG_CHECKING(for gnat version)
-cf_gnat_version=`${cf_ada_make:-gnatmake} -v 2>&1 | \
+AC_CACHE_CHECK(for ifelse($2,,gnat,$2) version, cf_cv_gnat_version,[
+cf_cv_gnat_version=`ifelse($2,,${cf_ada_make:-gnatmake},$2) --version 2>&1 | \
        grep '[[0-9]].[[0-9]][[0-9]]*' |\
        sed -e '2,$d' -e 's/[[^0-9 \.]]//g' -e 's/^[[ ]]*//' -e 's/ .*//'`
-AC_MSG_RESULT($cf_gnat_version)
-
-case $cf_gnat_version in
-(3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|20[[0-9]][[0-9]])
-       cf_cv_prog_gnat_correct=yes
-       ;;
-(*)
-       AC_MSG_WARN(Unsupported GNAT version $cf_gnat_version. We require 3.11 or better. Disabling Ada95 binding.)
-       cf_cv_prog_gnat_correct=no
-       ;;
-esac
 ])
+test -z "$cf_cv_gnat_version" && cf_cv_gnat_version=no
+ifelse($1,,,[eval $1=$cf_cv_gnat_version; unset cf_cv_gnat_version])
+])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_GNU_SOURCE version: 10 updated: 2018/12/10 20:09:41
 dnl -------------
@@ -3080,7 +3611,7 @@ if test x$cf_cv_gnu_library = xyes; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GPP_LIBRARY version: 12 updated: 2015/04/17 21:13:04
+dnl CF_GPP_LIBRARY version: 13 updated: 2021/01/01 13:31:04
 dnl --------------
 dnl If we're trying to use g++, test if libg++ is installed (a rather common
 dnl problem :-).  If we have the compiler but no library, we'll be able to
@@ -3088,7 +3619,7 @@ dnl configure, but won't be able to build the c++ demo program.
 AC_DEFUN([CF_GPP_LIBRARY],
 [
 cf_cxx_library=unknown
-case $cf_cv_system_name in
+case "$cf_cv_system_name" in
 (os2*)
        cf_gpp_libname=gpp
        ;;
@@ -3124,7 +3655,7 @@ if test "$GXX" = yes; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GXX_VERSION version: 8 updated: 2017/02/11 14:48:57
+dnl CF_GXX_VERSION version: 9 updated: 2023/03/05 14:30:13
 dnl --------------
 dnl Check for version of g++
 AC_DEFUN([CF_GXX_VERSION],[
@@ -3132,7 +3663,7 @@ AC_REQUIRE([AC_PROG_CPP])
 GXX_VERSION=none
 if test "$GXX" = yes; then
        AC_MSG_CHECKING(version of ${CXX:-g++})
-       GXX_VERSION="`${CXX:-g++} --version| sed -e '2,$d' -e 's/^.*(GCC) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
+       GXX_VERSION="`${CXX:-g++} --version 2>/dev/null | sed -e '2,$d' -e 's/^[[^(]]*([[^)]][[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
        if test -z "$GXX_VERSION"
        then
                GXX_VERSION=unknown
@@ -3142,7 +3673,7 @@ if test "$GXX" = yes; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GXX_WARNINGS version: 9 updated: 2015/04/17 21:13:04
+dnl CF_GXX_WARNINGS version: 11 updated: 2021/01/08 16:50:55
 dnl ---------------
 dnl Check if the compiler supports useful warning options.
 dnl
@@ -3221,7 +3752,7 @@ then
        EXTRA_CXXFLAGS="-W -Wall"
        cf_gxx_extra_warnings=""
        test "$with_ext_const" = yes && cf_gxx_extra_warnings="Wwrite-strings"
-       case "$GCC_VERSION" in
+       case "$GXX_VERSION" in
        ([[1-2]].*)
                ;;
        (*)
@@ -3255,7 +3786,7 @@ then
        CXXFLAGS="$cf_save_CXXFLAGS"
 fi
 
-rm -rf conftest*
+rm -rf ./conftest*
 AC_LANG_RESTORE
 AC_SUBST(EXTRA_CXXFLAGS)
 ])dnl
@@ -3305,7 +3836,7 @@ fi
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_HASHED_DB_LIBS version: 9 updated: 2010/05/29 16:31:02
+dnl CF_HASHED_DB_LIBS version: 10 updated: 2021/01/02 17:09:14
 dnl -----------------
 dnl Given that we have the header and version for hashed database, find the
 dnl library information.
@@ -3319,7 +3850,7 @@ do
        if test -n "$cf_db_libs"; then
                CF_ADD_LIB($cf_db_libs)
        fi
-       CF_MSG_LOG(checking for library "$cf_db_libs")
+       CF_MSG_LOG(checking for library $cf_db_libs)
        AC_TRY_LINK([
 $ac_includes_default
 #include <db.h>
@@ -3377,7 +3908,7 @@ done
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_HASHED_DB_VERSION version: 4 updated: 2014/04/12 16:47:01
+dnl CF_HASHED_DB_VERSION version: 5 updated: 2023/02/18 17:41:25
 dnl --------------------
 dnl Given that we have the header file for hashed database, find the version
 dnl information.
@@ -3398,13 +3929,13 @@ $ac_includes_default
 #if $cf_db_version == DB_VERSION_MAJOR
        /* ok */
 #else
-       make an error
+       #error $cf_db_version is not DB_VERSION_MAJOR
 #endif
 #else
 #if $cf_db_version == 1
        /* ok: assuming this is DB 1.8.5 */
 #else
-       make an error
+       #error $cf_db_version is not 1
 #endif
 #endif
 ],[DBT *foo = 0],[
@@ -3415,7 +3946,7 @@ done
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_HEADER_PATH version: 13 updated: 2015/04/15 19:08:48
+dnl CF_HEADER_PATH version: 15 updated: 2021/01/01 13:31:04
 dnl --------------
 dnl Construct a search-list of directories for a nonstandard header-file
 dnl
@@ -3431,7 +3962,7 @@ cf_header_path_list=""
 if test -n "${CFLAGS}${CPPFLAGS}" ; then
        for cf_header_path in $CPPFLAGS $CFLAGS
        do
-               case $cf_header_path in
+               case "$cf_header_path" in
                (-I*)
                        cf_header_path=`echo ".$cf_header_path" |sed -e 's/^...//' -e 's,/include$,,'`
                        CF_ADD_SUBDIR_PATH($1,$2,include,$cf_header_path,NONE)
@@ -3447,25 +3978,26 @@ CF_SUBDIR_PATH($1,$2,include)
 test "$includedir" != NONE && \
 test "$includedir" != "/usr/include" && \
 test -d "$includedir" && {
-       test -d $includedir &&    $1="[$]$1 $includedir"
-       test -d $includedir/$2 && $1="[$]$1 $includedir/$2"
+       test -d "$includedir" &&    $1="[$]$1 $includedir"
+       test -d "$includedir/$2" && $1="[$]$1 $includedir/$2"
 }
 
 test "$oldincludedir" != NONE && \
 test "$oldincludedir" != "/usr/include" && \
 test -d "$oldincludedir" && {
-       test -d $oldincludedir    && $1="[$]$1 $oldincludedir"
-       test -d $oldincludedir/$2 && $1="[$]$1 $oldincludedir/$2"
+       test -d "$oldincludedir"    && $1="[$]$1 $oldincludedir"
+       test -d "$oldincludedir/$2" && $1="[$]$1 $oldincludedir/$2"
 }
 
 $1="[$]$1 $cf_header_path_list"
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_HELP_MESSAGE version: 3 updated: 1998/01/14 10:56:23
+dnl CF_HELP_MESSAGE version: 4 updated: 2019/12/31 08:53:54
 dnl ---------------
 dnl Insert text into the help-message, for readability, from AC_ARG_WITH.
 AC_DEFUN([CF_HELP_MESSAGE],
-[AC_DIVERT_HELP([$1])dnl
+[CF_ACVERSION_CHECK(2.53,[],[
+AC_DIVERT_HELP($1)])dnl
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_INCLUDE_DIRS version: 10 updated: 2014/09/19 20:58:42
@@ -3485,7 +4017,7 @@ CPPFLAGS="-I. $CPPFLAGS"
 AC_SUBST(CPPFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_INSTALL_OPTS version: 2 updated: 2018/08/18 12:19:21
+dnl CF_INSTALL_OPTS version: 3 updated: 2023/06/03 15:17:30
 dnl ---------------
 dnl prompt for/fill-in useful install-program options
 AC_DEFUN([CF_INSTALL_OPTS],
@@ -3493,9 +4025,10 @@ AC_DEFUN([CF_INSTALL_OPTS],
 CF_INSTALL_OPT_S
 CF_INSTALL_OPT_P
 CF_INSTALL_OPT_O
+CF_INSTALL_OPT_STRIP_PROG
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_INSTALL_OPT_O version: 2 updated: 2015/05/15 19:45:35
+dnl CF_INSTALL_OPT_O version: 3 updated: 2020/12/31 20:19:42
 dnl ----------------
 dnl Almost all "install" programs default to the current user's ownership.
 dnl Almost - MINIX is an exception.
@@ -3514,7 +4047,7 @@ esac
 AC_MSG_RESULT($with_install_o)
 if test "x$with_install_o" = xyes
 then
-       INSTALL_OPT_O=`id root|sed -e 's/uid=[[0-9]]*(/ -o /' -e 's/gid=[[0-9]]*(/ -g /' -e 's/ [[^=[:space:]]][[^=[:space:]]]*=.*/ /' -e 's/)//g'`
+       INSTALL_OPT_O="`id root|sed -e 's/uid=[[0-9]]*(/ -o /' -e 's/gid=[[0-9]]*(/ -g /' -e 's/ [[^=[:space:]]][[^=[:space:]]]*=.*/ /' -e 's/)//g'`"
 else
        INSTALL_OPT_O=
 fi
@@ -3522,16 +4055,16 @@ fi
 AC_SUBST(INSTALL_OPT_O)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_INSTALL_OPT_P version: 1 updated: 2018/08/18 12:19:21
+dnl CF_INSTALL_OPT_P version: 3 updated: 2021/01/01 13:31:04
 dnl ----------------
 dnl Some install-programs accept a "-p" option to preserve file modification
 dnl timestamps.  That can be useful as an install option, as well as a way to
 dnl avoid the need for ranlib after copying a static archive.
 AC_DEFUN([CF_INSTALL_OPT_P],
 [
-: ${INSTALL:=install}
+: "${INSTALL:=install}"
 AC_CACHE_CHECK(if install accepts -p option, cf_cv_install_p,[
-       rm -rf conftest*
+       rm -rf ./conftest*
        date >conftest.in
        mkdir conftest.out
        sleep 3
@@ -3553,11 +4086,11 @@ AC_CACHE_CHECK(if install accepts -p option, cf_cv_install_p,[
        else
                cf_cv_install_p=no
        fi
-       rm -rf conftest*
+       rm -rf ./conftest*
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_INSTALL_OPT_S version: 2 updated: 2018/08/18 12:19:21
+dnl CF_INSTALL_OPT_S version: 3 updated: 2021/01/05 19:23:48
 dnl ----------------
 dnl By default, we should strip executables which are installed, but leave the
 dnl ability to suppress that for unit-testing.
@@ -3566,11 +4099,11 @@ AC_DEFUN([CF_INSTALL_OPT_S],
 AC_MSG_CHECKING(if you want to install stripped executables)
 CF_ARG_DISABLE(stripping,
        [  --disable-stripping     do not strip (debug info) installed executables],
-       [with_stripping=no],
-       [with_stripping=yes])
-AC_MSG_RESULT($with_stripping)
+       [enable_stripping=no],
+       [enable_stripping=yes])
+AC_MSG_RESULT($enable_stripping)
 
-if test "$with_stripping" = yes
+if test "$enable_stripping" = yes
 then
        INSTALL_OPT_S="-s"
 else
@@ -3579,7 +4112,73 @@ fi
 AC_SUBST(INSTALL_OPT_S)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_INTEL_COMPILER version: 7 updated: 2015/04/12 15:39:00
+dnl CF_INSTALL_OPT_STRIP_PROG version: 1 updated: 2023/06/03 15:17:30
+dnl -------------------------
+dnl Provide an option for overriding the strip program used in install "-s"
+dnl
+dnl coreutils install provides a --strip-program option
+dnl FreeBSD uses STRIPBIN environment variable, while NetBSD and OpenBSD use
+dnl STRIP environment variable.  Other versions of install do not support this.
+AC_DEFUN([CF_INSTALL_OPT_STRIP_PROG],
+[
+AC_REQUIRE([CF_INSTALL_OPT_S])
+if test -n "$INSTALL_OPT_S"
+then
+       AC_MSG_CHECKING(if you want to specify strip-program)
+       AC_ARG_WITH(strip-program,
+               [  --with-strip-program=XX specify program to use when stripping in install],
+               [with_strip_program=$withval],
+               [with_strip_program=no])
+       AC_MSG_RESULT($with_strip_program)
+       if test "$with_strip_program" != no
+       then
+               AC_MSG_CHECKING(if strip-program is supported with this installer)
+               cf_install_program=`echo "$INSTALL" | sed -e 's%[[ ]]*[[ ]]-.%%'`
+               check_install_strip=no
+               if test -f "$cf_install_program"
+               then
+                       check_install_version=`"$cf_install_program" --version 2>/dev/null | head -n 1 | grep coreutils`
+                       if test -n "$check_install_version"
+                       then
+                               check_install_strip="option"
+                       else
+                               for check_strip_variable in STRIPBIN STRIP
+                               do
+                                       if strings "$cf_install_program" | grep "^$check_strip_variable[$]" >/dev/null
+                                       then
+                                               check_install_strip="environ"
+                                               break
+                                       fi
+                               done
+                       fi
+               fi
+               AC_MSG_RESULT($check_install_strip)
+               case "$check_install_strip" in
+               (no)
+                       AC_MSG_WARN($cf_install_program does not support strip program option)
+                       with_strip_program=no
+                       ;;
+               (environ)
+                       cat >install.tmp <<-CF_EOF
+                       #! $SHELL
+                       STRIPBIN="$with_strip_program" \\
+                       STRIP="$with_strip_program" \\
+                       $INSTALL "[$]@"
+                       CF_EOF
+                       INSTALL="`pwd`/install.tmp"
+                       chmod +x "$INSTALL"
+                       CF_VERBOSE(created $INSTALL)
+                       ;;
+               (option)
+                       INSTALL_OPT_S="$INSTALL_OPT_S --strip-program=\"$with_strip_program\""
+                       ;;
+               esac
+       fi
+fi
+AC_SUBST(INSTALL_OPT_S)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_INTEL_COMPILER version: 9 updated: 2023/02/18 17:41:25
 dnl -----------------
 dnl Check if the given compiler is really the Intel compiler for Linux.  It
 dnl tries to imitate gcc, but does not return an error when it finds a mismatch
@@ -3597,7 +4196,7 @@ AC_REQUIRE([AC_CANONICAL_HOST])
 ifelse([$2],,INTEL_COMPILER,[$2])=no
 
 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
-       case $host_os in
+       case "$host_os" in
        (linux*|gnu*)
                AC_MSG_CHECKING(if this is really Intel ifelse([$1],GXX,C++,C) compiler)
                cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
@@ -3605,7 +4204,7 @@ if test "$ifelse([$1],,[$1],GCC)" = yes ; then
                AC_TRY_COMPILE([],[
 #ifdef __INTEL_COMPILER
 #else
-make an error
+#error __INTEL_COMPILER is not defined
 #endif
 ],[ifelse([$2],,INTEL_COMPILER,[$2])=yes
 cf_save_CFLAGS="$cf_save_CFLAGS -we147"
@@ -3617,14 +4216,14 @@ cf_save_CFLAGS="$cf_save_CFLAGS -we147"
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_ISASCII version: 4 updated: 2012/10/06 17:56:13
+dnl CF_ISASCII version: 5 updated: 2023/12/03 09:21:34
 dnl ----------
 dnl Check if we have either a function or macro for 'isascii()'.
 AC_DEFUN([CF_ISASCII],
 [
 AC_MSG_CHECKING(for isascii)
 AC_CACHE_VAL(cf_cv_have_isascii,[
-       AC_TRY_LINK([#include <ctype.h>],[int x = isascii(' ')],
+       AC_TRY_LINK([#include <ctype.h>],[int x = isascii(' '); (void)x],
        [cf_cv_have_isascii=yes],
        [cf_cv_have_isascii=no])
 ])dnl
@@ -3632,7 +4231,7 @@ AC_MSG_RESULT($cf_cv_have_isascii)
 test "$cf_cv_have_isascii" = yes && AC_DEFINE(HAVE_ISASCII,1,[Define to 1 if we have isascii()])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LARGEFILE version: 11 updated: 2018/06/20 20:23:13
+dnl CF_LARGEFILE version: 13 updated: 2023/12/03 19:09:59
 dnl ------------
 dnl Add checks for large file support.
 AC_DEFUN([CF_LARGEFILE],[
@@ -3666,12 +4265,17 @@ ifdef([AC_FUNC_FSEEKO],[
 #pragma GCC diagnostic error "-Wincompatible-pointer-types"
 #include <sys/types.h>
 #include <dirent.h>
+
+#ifndef __REDIRECT
+/* if transitional largefile support is setup, this is true */
+extern struct dirent64 * readdir(DIR *);
+#endif
                ],[
-               /* if transitional largefile support is setup, this is true */
-               extern struct dirent64 * readdir(DIR *);
-               struct dirent64 *x = readdir((DIR *)0);
-               struct dirent *y = readdir((DIR *)0);
+               DIR *dp = opendir(".");
+               struct dirent64 *x = readdir(dp);
+               struct dirent *y = readdir(dp);
                int z = x - y;
+               (void)z;
                ],
                [cf_cv_struct_dirent64=yes],
                [cf_cv_struct_dirent64=no])
@@ -3681,7 +4285,7 @@ ifdef([AC_FUNC_FSEEKO],[
 ])
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_LDFLAGS_STATIC version: 12 updated: 2015/04/18 08:56:57
+dnl CF_LDFLAGS_STATIC version: 14 updated: 2021/01/02 17:09:14
 dnl -----------------
 dnl Check for compiler/linker flags used to temporarily force usage of static
 dnl libraries.  This depends on the compiler and platform.  Use this to help
@@ -3690,7 +4294,7 @@ dnl the list of linker options and libraries.
 AC_DEFUN([CF_LDFLAGS_STATIC],[
 
 if test "$GCC" = yes ; then
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (OS/2*|os2*|aix[[4]]*|solaris2.1[[0-9]]|darwin*)
                LDFLAGS_STATIC=
                LDFLAGS_SHARED=
@@ -3701,7 +4305,7 @@ if test "$GCC" = yes ; then
                ;;
        esac
 else
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (aix[[4-7]]*)   # from ld manpage
                LDFLAGS_STATIC=-bstatic
                LDFLAGS_SHARED=-bdynamic
@@ -3754,7 +4358,7 @@ int cf_ldflags_static(FILE *fp);
        return cf_ldflags_static(stdin);
 ],[
        # some linkers simply ignore the -dynamic
-       case x`file conftest$ac_exeext 2>/dev/null` in
+       case x`file "conftest$ac_exeext" 2>/dev/null` in
        (*static*)
                cf_ldflags_static=no
                ;;
@@ -3769,7 +4373,7 @@ int cf_ldflags_static(FILE *fp);
 
        AC_MSG_RESULT($cf_ldflags_static)
 
-       if test $cf_ldflags_static != yes
+       if test "$cf_ldflags_static" != yes
        then
                LDFLAGS_STATIC=
                LDFLAGS_SHARED=
@@ -3783,7 +4387,7 @@ AC_SUBST(LDFLAGS_STATIC)
 AC_SUBST(LDFLAGS_SHARED)
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_LD_RPATH_OPT version: 8 updated: 2018/08/18 16:36:35
+dnl CF_LD_RPATH_OPT version: 9 updated: 2021/01/01 13:31:04
 dnl ---------------
 dnl For the given system and compiler, find the compiler flags to pass to the
 dnl loader to use the "rpath" feature.
@@ -3795,7 +4399,7 @@ LD_RPATH_OPT=
 if test "x$cf_cv_enable_rpath" != xno
 then
        AC_MSG_CHECKING(for an rpath option)
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (irix*)
                if test "$GCC" = yes; then
                        LD_RPATH_OPT="-Wl,-rpath,"
@@ -3840,7 +4444,101 @@ then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LIBRARY_PATH version: 10 updated: 2015/04/15 19:08:48
+dnl CF_LD_SEARCHPATH version: 4 updated: 2022/08/27 15:43:08
+dnl ----------------
+dnl Try to obtain the linker's search-path, for use in scripts.
+dnl
+dnl Ignore LD_LIBRARY_PATH, etc.
+AC_DEFUN([CF_LD_SEARCHPATH],[
+AC_CACHE_CHECK(for linker search path,cf_cv_ld_searchpath,[
+
+if test "$cross_compiling" != yes ; then
+
+# GNU binutils' ld does not involve permissions which may stop ldconfig.
+cf_pathlist=`${LD:-ld} --verbose 2>/dev/null | grep SEARCH_DIR | sed -e 's,SEARCH_DIR[[("=]][[("=]]*,,g' -e 's/"[[)]];//gp' | sort -u`
+
+# The -NX options tell newer versions of Linux ldconfig to not attempt to
+# update the cache, which makes it run faster.
+test -z "$cf_pathlist" && \
+       cf_pathlist=`(ldconfig -NX -v) 2>/dev/null | sed -e '/^[[       ]]/d' -e 's/:$//' | sort -u`
+
+test -z "$cf_pathlist" &&
+       cf_pathlist=`(ldconfig -v) 2>/dev/null | sed -n -e '/^[[        ]]/d' -e 's/:$//p' | sort -u`
+
+# This works with OpenBSD 6.5, which lists only filenames
+test -z "$cf_pathlist" &&
+       cf_pathlist=`(ldconfig -v) 2>/dev/null | sed -n -e 's,^Adding \(.*\)/.*[$],\1,p' | sort -u`
+
+if test -z "$cf_pathlist"
+then
+       # dyld default path with MacOS
+       if test -f /usr/bin/otool && test "x`uname -s`" = xDarwin
+       then
+               # do this to bypass check
+               cf_cv_ld_searchpath='$HOME/lib'
+               cf_pathlist="/usr/local/lib /lib /usr/lib"
+       fi
+fi
+
+if test -z "$cf_pathlist"
+then
+       # Solaris is "SunOS"
+       if test -f /usr/bin/isainfo && test "x`uname -s`" = xSunOS
+       then
+               case x`(isainfo -b)` in
+               (x64)
+                       cf_pathlist="$cf_pathlist /lib/64 /usr/lib/64"
+                       ;;
+               (x32)
+                       test -d /usr/ccs/lib && cf_pathlist="$cf_pathlist /usr/ccs/lib"
+                       cf_pathlist="$cf_pathlist /lib /usr/lib"
+                       ;;
+               (*)
+                       AC_MSG_WARN(problem with Solaris architecture)
+                       ;;
+               esac
+       fi
+fi
+
+if test -z "$cf_pathlist"
+then
+       # HP-UX
+       if test x"`uname -s`" = xHP-UX
+       then
+               case x`getconf LONG_BIT` in
+               (x64)
+                       cf_pathlist="/usr/lib/hpux64"
+                       ;;
+               (x*)
+                       cf_pathlist="/usr/lib/hpux32"
+                       ;;
+               esac
+       fi
+fi
+
+fi
+
+# If nothing else, assume it is conventional
+test -z "$cf_pathlist" && cf_pathlist="/usr/lib /lib"
+
+# Finally, check that this is only directories
+for cf_path in [$]0 $cf_pathlist
+do
+       if test -d "$cf_path"; then
+               test -n "$cf_cv_ld_searchpath" && cf_cv_ld_searchpath="${cf_cv_ld_searchpath} "
+               cf_cv_ld_searchpath="${cf_cv_ld_searchpath}${cf_path}"
+       fi
+done
+
+# Ensure that it is nonempty
+test -z "$cf_cv_ld_searchpath" && cf_cv_ld_searchpath=/usr/lib
+])
+
+LD_SEARCHPATH=`echo "$cf_cv_ld_searchpath"|sed -e 's/ /|/g'`
+AC_SUBST(LD_SEARCHPATH)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_LIBRARY_PATH version: 11 updated: 2021/01/01 13:31:04
 dnl ---------------
 dnl Construct a search-list of directories for a nonstandard library-file
 dnl
@@ -3854,7 +4552,7 @@ cf_library_path_list=""
 if test -n "${LDFLAGS}${LIBS}" ; then
        for cf_library_path in $LDFLAGS $LIBS
        do
-               case $cf_library_path in
+               case "$cf_library_path" in
                (-L*)
                        cf_library_path=`echo ".$cf_library_path" |sed -e 's/^...//' -e 's,/lib$,,'`
                        CF_ADD_SUBDIR_PATH($1,$2,lib,$cf_library_path,NONE)
@@ -3881,13 +4579,13 @@ fi
 test -z "$cf_cv_libtool_version" && unset cf_cv_libtool_version
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LIB_PREFIX version: 12 updated: 2015/10/17 19:03:33
+dnl CF_LIB_PREFIX version: 14 updated: 2021/01/01 13:31:04
 dnl -------------
 dnl Compute the library-prefix for the given host system
 dnl $1 = variable to set
 define([CF_LIB_PREFIX],
 [
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (OS/2*|os2*)
                if test "$DFT_LWR_MODEL" = libtool; then
                        LIB_PREFIX='lib'
@@ -3895,6 +4593,9 @@ define([CF_LIB_PREFIX],
                        LIB_PREFIX=''
                fi
                ;;
+       (*-msvc*)
+               LIB_PREFIX=''
+               ;;
        (*)     LIB_PREFIX='lib'
                ;;
        esac
@@ -3902,7 +4603,7 @@ ifelse($1,,,[$1=$LIB_PREFIX])
        AC_SUBST(LIB_PREFIX)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LIB_RULES version: 88 updated: 2018/08/18 12:19:21
+dnl CF_LIB_RULES version: 100 updated: 2023/06/03 15:17:30
 dnl ------------
 dnl Append definitions and rules for the given models to the subdirectory
 dnl Makefiles, and the recursion rule for the top-level Makefile.  If the
@@ -3918,48 +4619,50 @@ dnl     lib<name>.so.<maj>.<minor>
 dnl
 dnl Note: Libs_To_Make is mixed case, since it is not a pure autoconf variable.
 AC_DEFUN([CF_LIB_RULES],
-[
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+AC_REQUIRE([CF_MAKE_PHONY])dnl
+
 cf_prefix=$LIB_PREFIX
 AC_REQUIRE([CF_SUBST_NCURSES_VERSION])
 
-case $cf_cv_shlib_version in
-(cygdll|msysdll|mingw)
+case "$cf_cv_shlib_version" in
+(cygdll|msysdll|mingw|msvcdll)
        TINFO_NAME=$TINFO_ARG_SUFFIX
        TINFO_SUFFIX=.dll
        ;;
 esac
 
 if test -n "$TINFO_SUFFIX" ; then
-       case $TINFO_SUFFIX in
+       case "$TINFO_SUFFIX" in
        (tw*)
                TINFO_NAME="${TINFO_NAME}tw${EXTRA_SUFFIX}"
-               TINFO_SUFFIX=`echo $TINFO_SUFFIX | sed 's/^tw'$EXTRA_SUFFIX'//'`
+               TINFO_SUFFIX=`echo "$TINFO_SUFFIX" | sed 's/^tw'$EXTRA_SUFFIX'//'`
                ;;
        (t*)
                TINFO_NAME="${TINFO_NAME}t${EXTRA_SUFFIX}"
-               TINFO_SUFFIX=`echo $TINFO_SUFFIX | sed 's/^t'$EXTRA_SUFFIX'//'`
+               TINFO_SUFFIX=`echo "$TINFO_SUFFIX" | sed 's/^t'$EXTRA_SUFFIX'//'`
                ;;
        (w*)
                TINFO_NAME="${TINFO_NAME}w${EXTRA_SUFFIX}"
-               TINFO_SUFFIX=`echo $TINFO_SUFFIX | sed 's/^w'$EXTRA_SUFFIX'//'`
+               TINFO_SUFFIX=`echo "$TINFO_SUFFIX" | sed 's/^w'$EXTRA_SUFFIX'//'`
                ;;
        esac
 fi
 
 for cf_dir in $SRC_SUBDIRS
 do
-       if test ! -d $srcdir/$cf_dir ; then
+       if test ! -d "$srcdir/$cf_dir" ; then
                continue
-       elif test -f $srcdir/$cf_dir/modules; then
+       elif test -f "$srcdir/$cf_dir/modules" ; then
 
                SHARED_LIB=
                Libs_To_Make=
                cf_awk_program=
-               if test -n "${cf_cv_abi_version}" && test "x${cf_cv_abi_version}" != "x5"
+               if test -n "${cf_cv_abi_default}" && test "x${cf_cv_abi_default}" != "x5"
                then
                        cf_awk_program="$cf_awk_program\
-/deprecated in ABI${cf_cv_abi_version}/ { next; }\
-{ sub(\"NCURSES([[WT]]+)?\", \"&${cf_cv_abi_version}\"); }\
+/deprecated in ABI${cf_cv_abi_default}/ { next; }\
+{ sub(\"NCURSES([[WT]]+)?\", \"&${cf_cv_abi_default}\"); }\
 "
                fi
 
@@ -3980,7 +4683,7 @@ resulting.map: $UNALTERED_SYMS
 $cf_awk_program \
 { if ( last != "" && ( skip == 0 || \[$]\[$]0 !~ /}/ ) ) { print last; }\
  skip = 0; last = \[$]\[$]0; } \
-END { print last; }' < $UNALTERED_SYMS >\[$]@
+END { print last; }' < "$UNALTERED_SYMS" >\[$]@
 
 distclean::
        rm -f resulting.map
@@ -3990,9 +4693,14 @@ CF_EOF
                for cf_item in $cf_LIST_MODELS
                do
                        CF_LIB_SUFFIX($cf_item,cf_suffix,cf_depsuf)
-                       cf_libname=$cf_dir
-                       test "$cf_dir" = c++ && cf_libname=ncurses++
-                       if test $cf_item = shared ; then
+                       if test "$cf_dir" = "c++"
+                       then
+                               CF_MAP_LIB_BASENAME(cf_libname,cxx)
+                       else
+                               CF_MAP_LIB_BASENAME(cf_libname,$cf_dir)
+                       fi
+                       test -z "$cf_libname" && cf_libname="$cf_dir"
+                       if test "$cf_item" = shared ; then
                                if test -n "${LIB_SUFFIX}"
                                then
                                        cf_shared_suffix=`echo "$cf_suffix" | sed 's/^'"${USE_LIB_SUFFIX}"'//'`
@@ -4033,7 +4741,7 @@ CF_EOF
                                # cygwin needs import library, and has unique naming convention
                                # use autodetected ${cf_prefix} for import lib and static lib, but
                                # use 'cyg' prefix for shared lib.
-                               case $cf_cv_shlib_version in
+                               case "$cf_cv_shlib_version" in
                                (cygdll)
                                        cf_cygsuf=`echo "$cf_suffix" | sed -e 's/\.dll/\${ABI_VERSION}.dll/'`
                                        cf_add_lib="../lib/cyg${cf_libname}${cf_cygsuf}"
@@ -4046,6 +4754,10 @@ CF_EOF
                                        cf_cygsuf=`echo "$cf_suffix" | sed -e 's/\.dll/\${ABI_VERSION}.dll/'`
                                        cf_add_lib="../lib/lib${cf_libname}${cf_cygsuf}"
                                        ;;
+                               (msvcdll)
+                                       cf_cygsuf=`echo "$cf_suffix" | sed -e 's/\.dll/\${ABI_VERSION}.dll/'`
+                                       cf_add_lib="../lib/${cf_libname}${cf_cygsuf}"
+                                       ;;
                                (*)
                                        cf_add_lib=
                                        ;;
@@ -4060,7 +4772,7 @@ CF_EOF
                        Libs_To_Make="$Libs_To_Make $cf_add_lib"
                done
 
-               if test $cf_dir = ncurses ; then
+               if test "$cf_dir" = ncurses ; then
                        cf_subsets="$LIB_SUBSETS"
                        cf_r_parts="$cf_subsets"
                        cf_liblist="$Libs_To_Make"
@@ -4071,12 +4783,12 @@ CF_EOF
                                cf_r_parts=`echo "$cf_r_parts" |sed -e 's/^[[^ ]]* //'`
                                if test "$cf_l_parts" != "$cf_r_parts" ; then
                                        cf_add_lib=
-                                       case $cf_l_parts in
+                                       case "$cf_l_parts" in
                                        (*termlib*)
-                                               cf_add_lib=`echo $cf_liblist |sed -e s%${LIB_NAME}${USE_LIB_SUFFIX}%${TINFO_LIB_SUFFIX}%g`
+                                               cf_add_lib=`echo "$cf_liblist" |sed -e s%${LIB_NAME}${USE_LIB_SUFFIX}%${TINFO_LIB_SUFFIX}%g`
                                                ;;
                                        (*ticlib*)
-                                               cf_add_lib=`echo $cf_liblist |sed -e s%${LIB_NAME}${USE_LIB_SUFFIX}%${TICS_LIB_SUFFIX}%g`
+                                               cf_add_lib=`echo "$cf_liblist" |sed -e s%${LIB_NAME}${USE_LIB_SUFFIX}%${TICS_LIB_SUFFIX}%g`
                                                ;;
                                        (*)
                                                break
@@ -4093,12 +4805,12 @@ CF_EOF
                        cf_subsets=`echo "$LIB_SUBSETS" | sed -e 's/^termlib.* //'`
                fi
 
-               if test $cf_dir = c++; then
+               if test "$cf_dir" = c++; then
                        if test "x$with_shared_cxx" != xyes && test -n "$cf_shared_suffix"; then
                                cf_list=
                                for cf_item in $Libs_To_Make
                                do
-                                       case $cf_item in
+                                       case "$cf_item" in
                                        (*.a)
                                                ;;
                                        (*)
@@ -4122,12 +4834,12 @@ CF_EOF
 
                sed -e "s%@Libs_To_Make@%$Libs_To_Make%" \
                    -e "s%@SHARED_LIB@%$SHARED_LIB%" \
-                       $cf_dir/Makefile >$cf_dir/Makefile.out
-               mv $cf_dir/Makefile.out $cf_dir/Makefile
+                       "$cf_dir/Makefile" >$cf_dir/Makefile.out
+               mv "$cf_dir/Makefile.out" "$cf_dir/Makefile"
 
-               $AWK -f $srcdir/mk-0th.awk \
+               $AWK -f "$srcdir/mk-0th.awk" \
                        libname="${cf_dir}${LIB_SUFFIX}" subsets="$LIB_SUBSETS" ticlib="$TICS_LIB_SUFFIX" termlib="$TINFO_LIB_SUFFIX" \
-                       $srcdir/$cf_dir/modules >>$cf_dir/Makefile
+                       "$srcdir/$cf_dir/modules" >>$cf_dir/Makefile
 
                for cf_subset in $cf_subsets
                do
@@ -4140,8 +4852,8 @@ CF_EOF
 
                        CXX_MODEL=$cf_ITEM
                        if test "$CXX_MODEL" = SHARED; then
-                               case $cf_cv_shlib_version in
-                               (cygdll|msysdll|mingw)
+                               case "$cf_cv_shlib_version" in
+                               (cygdll|msysdll|mingw|msvcdll)
                                        test "x$with_shared_cxx" = xno && CF_VERBOSE(overriding CXX_MODEL to SHARED)
                                        with_shared_cxx=yes
                                        ;;
@@ -4156,8 +4868,8 @@ CF_EOF
 
                        # Test for case where we build libtinfo with a different name.
                        cf_libname=$cf_dir
-                       if test $cf_dir = ncurses ; then
-                               case $cf_subset in
+                       if test "$cf_dir" = ncurses ; then
+                               case "$cf_subset" in
                                (*base*)
                                        cf_libname=${cf_libname}$USE_LIB_SUFFIX
                                        ;;
@@ -4168,14 +4880,16 @@ CF_EOF
                                        cf_libname=$TICS_LIB_SUFFIX
                                        ;;
                                esac
-                       elif test $cf_dir = c++ ; then
-                               cf_libname=ncurses++$USE_LIB_SUFFIX
+                       elif test "$cf_dir" = c++ ; then
+                               CF_MAP_LIB_BASENAME(cf_libname,cxx)
+                               cf_libname=${cf_libname}$USE_LIB_SUFFIX
                        else
+                               CF_MAP_LIB_BASENAME(cf_libname,$cf_dir)
                                cf_libname=${cf_libname}$USE_LIB_SUFFIX
                        fi
                        if test -n "${USE_ARG_SUFFIX}" ; then
                                # undo $USE_LIB_SUFFIX add-on in CF_LIB_SUFFIX
-                               cf_suffix=`echo $cf_suffix |sed -e "s%^${USE_LIB_SUFFIX}%%"`
+                               cf_suffix=`echo "$cf_suffix" |sed -e "s%^${USE_LIB_SUFFIX}%%"`
                        fi
 
                        # These dependencies really are for development, not
@@ -4187,9 +4901,9 @@ CF_EOF
                                cf_reldir="\${srcdir}"
                        fi
 
-                       if test -f $srcdir/$cf_dir/$cf_dir.priv.h; then
+                       if test -f "$srcdir/$cf_dir/$cf_dir.priv.h" ; then
                                cf_depend="$cf_depend $cf_reldir/$cf_dir.priv.h"
-                       elif test -f $srcdir/$cf_dir/curses.priv.h; then
+                       elif test -f "$srcdir/$cf_dir/curses.priv.h" ; then
                                cf_depend="$cf_depend $cf_reldir/curses.priv.h"
                        fi
 
@@ -4197,36 +4911,39 @@ CF_EOF
                        old_cf_suffix="$cf_suffix"
                        if test "$cf_cv_shlib_version_infix" = yes ; then
                        if test -n "$USE_LIB_SUFFIX" ; then
-                               case $USE_LIB_SUFFIX in
+                               case "$USE_LIB_SUFFIX" in
                                (tw*)
-                                       cf_libname=`echo $cf_libname | sed 's/tw'$EXTRA_SUFFIX'$//'`
-                                       cf_suffix=`echo $cf_suffix | sed 's/^tw'$EXTRA_SUFFIX'//'`
+                                       cf_libname=`echo "$cf_libname" | sed 's/tw'$EXTRA_SUFFIX'$//'`
+                                       cf_suffix=`echo "$cf_suffix" | sed 's/^tw'$EXTRA_SUFFIX'//'`
                                        cf_dir_suffix=tw$EXTRA_SUFFIX
                                        ;;
                                (t*)
-                                       cf_libname=`echo $cf_libname | sed 's/t'$EXTRA_SUFFIX'$//'`
-                                       cf_suffix=`echo $cf_suffix | sed 's/^t'$EXTRA_SUFFIX'//'`
+                                       cf_libname=`echo "$cf_libname" | sed 's/t'$EXTRA_SUFFIX'$//'`
+                                       cf_suffix=`echo "$cf_suffix" | sed 's/^t'$EXTRA_SUFFIX'//'`
                                        cf_dir_suffix=t$EXTRA_SUFFIX
                                        ;;
                                (w*)
-                                       cf_libname=`echo $cf_libname | sed 's/w'$EXTRA_SUFFIX'$//'`
-                                       cf_suffix=`echo $cf_suffix | sed 's/^w'$EXTRA_SUFFIX'//'`
+                                       cf_libname=`echo "$cf_libname" | sed 's/w'$EXTRA_SUFFIX'$//'`
+                                       cf_suffix=`echo "$cf_suffix" | sed 's/^w'$EXTRA_SUFFIX'//'`
                                        cf_dir_suffix=w$EXTRA_SUFFIX
                                        ;;
                                (*)
-                                       cf_libname=`echo $cf_libname | sed 's/'$EXTRA_SUFFIX'$//'`
-                                       cf_suffix=`echo $cf_suffix | sed 's/^'$EXTRA_SUFFIX'//'`
+                                       cf_libname=`echo "$cf_libname" | sed 's/'$EXTRA_SUFFIX'$//'`
+                                       cf_suffix=`echo "$cf_suffix" | sed 's/^'$EXTRA_SUFFIX'//'`
                                        cf_dir_suffix=$EXTRA_SUFFIX
                                        ;;
                                esac
                        fi
                        fi
 
-                       $AWK -f $srcdir/mk-1st.awk \
+                       $AWK -f "$srcdir/mk-1st.awk" \
                                name=${cf_libname}${cf_dir_suffix} \
                                traces=$LIB_TRACING \
                                MODEL=$cf_ITEM \
                                CXX_MODEL=$CXX_MODEL \
+                               LIB_SUFFIX=$LIB_SUFFIX \
+                               USE_LIB_SUFFIX=$USE_LIB_SUFFIX \
+                               make_phony="${cf_cv_make_PHONY:-no}" \
                                model=$cf_subdir \
                                prefix=$cf_prefix \
                                suffix=$cf_suffix \
@@ -4246,16 +4963,16 @@ CF_EOF
                                depend="$cf_depend" \
                                host="$host" \
                                libtool_version="$LIBTOOL_VERSION" \
-                               $srcdir/$cf_dir/modules >>$cf_dir/Makefile
+                               "$srcdir/$cf_dir/modules" >>$cf_dir/Makefile
 
                        cf_suffix="$old_cf_suffix"
 
                        for cf_subdir2 in $cf_subdirs lib
                        do
-                               test $cf_subdir = $cf_subdir2 && break
+                               test "$cf_subdir" = "$cf_subdir2" && break
                        done
                        test "${cf_subset}.${cf_subdir2}" != "${cf_subset}.${cf_subdir}" && \
-                       $AWK -f $srcdir/mk-2nd.awk \
+                       $AWK -f "$srcdir/mk-2nd.awk" \
                                name=$cf_dir \
                                traces=$LIB_TRACING \
                                MODEL=$cf_ITEM \
@@ -4265,53 +4982,76 @@ CF_EOF
                                echo=$WITH_ECHO \
                                crenames=$cf_cv_prog_CC_c_o \
                                cxxrenames=$cf_cv_prog_CXX_c_o \
-                               $srcdir/$cf_dir/modules >>$cf_dir/Makefile
+                               "$srcdir/$cf_dir/modules" >>$cf_dir/Makefile
                        cf_subdirs="$cf_subdirs $cf_subdir"
                        done
                done
        fi
 
-       echo '  cd '$cf_dir' && ${MAKE} ${TOP_MFLAGS} [$]@' >>Makefile
+       echo '  ( cd '$cf_dir' && ${MAKE} ${TOP_MFLAGS} [$]@ )' >>Makefile
 done
 
+echo >> Makefile
+echo '# generated by CF_LIB_RULES' >> Makefile
+
+if test "x$cf_cv_make_PHONY" = xyes ; then
+       cat >> Makefile <<-CF_EOF
+
+       .PHONY :        libs
+       .PHONY :        lintlib
+       .PHONY :        install.includes
+       .PHONY :        uninstall.includes
+       .PHONY :        install.libs
+       .PHONY :        uninstall.libs
+CF_EOF
+fi
+
 for cf_dir in $SRC_SUBDIRS
 do
-       if test ! -d $srcdir/$cf_dir ; then
+       if test ! -d "$srcdir/$cf_dir" ; then
                continue
        fi
 
-       if test -f $cf_dir/Makefile ; then
+       if test -f "$cf_dir/Makefile" ; then
                case "$cf_dir" in
                (Ada95)
                        echo 'libs \' >> Makefile
                        echo 'install.libs \' >> Makefile
                        echo 'uninstall.libs ::' >> Makefile
-                       echo '  cd '$cf_dir' && ${MAKE} ${TOP_MFLAGS} [$]@' >> Makefile
+                       echo '  ( cd '$cf_dir' && ${MAKE} ${TOP_MFLAGS} [$]@ )' >> Makefile
                        ;;
                esac
        fi
 
-       if test -f $srcdir/$cf_dir/modules; then
+       if test -f "$srcdir/$cf_dir/modules" ; then
+
+               if test "x$cf_cv_make_PHONY" = xyes ; then
+                       cat >> Makefile <<-CF_EOF
+
+                       .PHONY :        install.$cf_dir
+                       .PHONY :        uninstall.$cf_dir
+CF_EOF
+               fi
+
                echo >> Makefile
-               if test -f $srcdir/$cf_dir/headers; then
+               if test -f "$srcdir/$cf_dir/headers" ; then
 cat >> Makefile <<CF_EOF
 install.includes \\
 uninstall.includes \\
 CF_EOF
                fi
-if test "$cf_dir" != "c++" ; then
-echo 'lint \' >> Makefile
-fi
+
 cat >> Makefile <<CF_EOF
+lint \\
 libs \\
 lintlib \\
 install.libs \\
 uninstall.libs \\
 install.$cf_dir \\
 uninstall.$cf_dir ::
-       cd $cf_dir && \${MAKE} \${TOP_MFLAGS} \[$]@
+       ( cd "$cf_dir" && \${MAKE} \${TOP_MFLAGS} \[$]@ )
 CF_EOF
-       elif test -f $srcdir/$cf_dir/headers; then
+       elif test -f "$srcdir/$cf_dir/headers" ; then
 cat >> Makefile <<CF_EOF
 
 libs \\
@@ -4319,32 +5059,49 @@ install.libs \\
 uninstall.libs \\
 install.includes \\
 uninstall.includes ::
-       cd $cf_dir && \${MAKE} \${TOP_MFLAGS} \[$]@
+       ( cd "$cf_dir" && \${MAKE} \${TOP_MFLAGS} \[$]@ )
 CF_EOF
 fi
 done
 
+if test "x$cf_cv_make_PHONY" = xyes ; then
+       cat >> Makefile <<-CF_EOF
+
+       .PHONY :        install.data
+       .PHONY :        uninstall.data
+CF_EOF
+fi
+
 if test "x$cf_with_db_install" = xyes; then
 cat >> Makefile <<CF_EOF
 
 install.libs uninstall.libs \\
 install.data uninstall.data ::
-$MAKE_TERMINFO cd misc && \${MAKE} \${TOP_MFLAGS} \[$]@
+$MAKE_TERMINFO ( cd misc && \${MAKE} \${TOP_MFLAGS} \[$]@ )
 CF_EOF
 else
 cat >> Makefile <<CF_EOF
 
 install.libs uninstall.libs ::
-       cd misc && \${MAKE} \${TOP_MFLAGS} \[$]@
+       ( cd misc && \${MAKE} \${TOP_MFLAGS} \[$]@ )
 CF_EOF
 fi
 
 if test "x$cf_with_manpages" = xyes; then
+
+if test "x$cf_cv_make_PHONY" = xyes ; then
+       cat >> Makefile <<-CF_EOF
+
+       .PHONY :        install.man
+       .PHONY :        uninstall.man
+CF_EOF
+fi
+
 cat >> Makefile <<CF_EOF
 
 install.man \\
 uninstall.man ::
-       cd man && \${MAKE} \${TOP_MFLAGS} \[$]@
+       ( cd man && \${MAKE} \${TOP_MFLAGS} \[$]@ )
 CF_EOF
 fi
 
@@ -4353,22 +5110,10 @@ cat >> Makefile <<CF_EOF
 distclean ::
        rm -f config.cache config.log config.status Makefile include/ncurses_cfg.h
        rm -f headers.sh headers.sed mk_shared_lib.sh
-       rm -f edit_man.* man_alias.*
+       rm -f edit_man.* man_alias.* *.tmp
        rm -rf \${DIRS_TO_MAKE}
 CF_EOF
 
-# Special case: tack's manpage lives in its own directory.
-if test "x$cf_with_manpages" = xyes; then
-if test "x$cf_with_tack" = "xyes"; then
-cat >> Makefile <<CF_EOF
-
-install.man \\
-uninstall.man ::
-       cd tack && \${MAKE} \${TOP_MFLAGS} \[$]@
-CF_EOF
-fi
-fi
-
 dnl If we're installing into a subdirectory of /usr/include, etc., we should
 dnl prepend the subdirectory's name to the "#include" paths.  It won't hurt
 dnl anything, and will make it more standardized.  It's awkward to decide this
@@ -4398,12 +5143,12 @@ TMPSED=\${TMPDIR:-/tmp}/headers.sed\$\$
 echo installing \$SRC in \$DST
 CF_EOF
 
-if test $WITH_CURSES_H = yes; then
+if test "$WITH_CURSES_H" = yes; then
        cat >>headers.sh <<CF_EOF
 case \$DST in
 (/*/include/*)
        END=\`basename \$DST\`
-       for i in \`cat \$REF/../*/headers |fgrep -v "#"\`
+       for i in \`cat \$REF/../*/headers |${FGREP-fgrep} -v "#"\`
        do
                NAME=\`basename \$i\`
                echo "s/<\$NAME>/<\$END\/\$NAME>/" >> \$TMPSED
@@ -4420,7 +5165,7 @@ else
 case \$DST in
 (/*/include/*)
        END=\`basename \$DST\`
-       for i in \`cat \$REF/../*/headers |fgrep -v "#"\`
+       for i in \`cat \$REF/../*/headers |${FGREP-fgrep} -v "#"\`
        do
                NAME=\`basename \$i\`
                if test "\$NAME" = "curses.h"
@@ -4442,7 +5187,7 @@ rm -f \$TMPSRC
 sed -f \$TMPSED \$SRC > \$TMPSRC
 NAME=\`basename \$SRC\`
 CF_EOF
-if test $WITH_CURSES_H != yes; then
+if test "$WITH_CURSES_H" != yes; then
        cat >>headers.sh <<CF_EOF
 test "\$NAME" = "curses.h" && NAME=ncurses.h
 CF_EOF
@@ -4459,19 +5204,26 @@ chmod 0755 headers.sh
 
 for cf_dir in $SRC_SUBDIRS
 do
-       if test ! -d $srcdir/$cf_dir ; then
+       if test ! -d "$srcdir/$cf_dir" ; then
                continue
        fi
 
-       if test -f $srcdir/$cf_dir/headers; then
-               $AWK -f $srcdir/mk-hdr.awk \
+       if test -f "$srcdir/$cf_dir/headers" ; then
+               $AWK -f "$srcdir/mk-hdr.awk" \
                        subset="$LIB_SUBSETS" \
                        compat="$WITH_CURSES_H" \
-                       $srcdir/$cf_dir/headers >>$cf_dir/Makefile
+                       "$srcdir/$cf_dir/headers" >>$cf_dir/Makefile
        fi
 
-       if test -f $srcdir/$cf_dir/modules; then
+       if test -f "$srcdir/$cf_dir/modules" ; then
                if test "$cf_dir" != "c++" ; then
+                       if test "x$cf_cv_make_PHONY" = xyes ; then
+                               cat >> $cf_dir/Makefile <<-CF_EOF
+
+                               .PHONY :        depend
+CF_EOF
+                       fi
+
                        cat >>$cf_dir/Makefile <<"CF_EOF"
 depend : ${AUTO_SRC}
        makedepend -- ${CPPFLAGS} -- ${C_SRC}
@@ -4484,7 +5236,7 @@ done
 AC_SUBST(Libs_To_Make)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LIB_SONAME version: 6 updated: 2017/01/21 11:06:25
+dnl CF_LIB_SONAME version: 9 updated: 2021/01/04 18:48:01
 dnl -------------
 dnl Find the and soname for the given shared library.  Set the cache variable
 dnl cf_cv_$3_soname to this, unless it is not found.  Then set the cache
@@ -4494,7 +5246,8 @@ dnl $1 = headers
 dnl $2 = code
 dnl $3 = library name
 AC_DEFUN([CF_LIB_SONAME],
-[
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+
 AC_CACHE_CHECK(for soname of $3 library,cf_cv_$3_soname,[
 
 cf_cv_$3_soname=unknown
@@ -4511,17 +5264,17 @@ cf_save_LIBS="$LIBS"
        CF_ADD_LIB($3)
        if AC_TRY_EVAL(ac_compile) ; then
                if AC_TRY_EVAL(ac_link) ; then
-                       cf_cv_$3_soname=`ldd conftest$ac_exeext 2>/dev/null | sed -e 's,^.*/,,' -e 's, .*$,,' | fgrep lib$3.`
+                       cf_cv_$3_soname="`ldd \"conftest$ac_exeext\" 2>/dev/null | sed -e 's,^.*/,,' -e 's, .*$,,' | ${FGREP-fgrep} lib$3.`"
                        test -z "$cf_cv_$3_soname" && cf_cv_$3_soname=unknown
                fi
        fi
-rm -rf conftest*
+rm -rf ./conftest*
 LIBS="$cf_save_LIBS"
 fi
 ])
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_LIB_SUFFIX version: 25 updated: 2015/04/17 21:13:04
+dnl CF_LIB_SUFFIX version: 28 updated: 2021/01/01 16:53:59
 dnl -------------
 dnl Compute the library file-suffix from the given model name
 dnl $1 = model name
@@ -4536,19 +5289,37 @@ AC_DEFUN([CF_LIB_SUFFIX],
                $3=[$]$2
                ;;
        (Xdebug)
-               $2='_g.a'
+               case "$cf_cv_system_name" in
+               (*-msvc*)
+                       $2='_g.lib'
+                       ;;
+               (*)
+                       $2='_g.a'
+                       ;;
+               esac
                $3=[$]$2
                ;;
        (Xprofile)
-               $2='_p.a'
+               case "$cf_cv_system_name" in
+               (*-msvc*)
+                       $2='_p.lib'
+                       ;;
+               (*)
+                       $2='_p.a'
+                       ;;
+               esac
                $3=[$]$2
                ;;
        (Xshared)
-               case $cf_cv_system_name in
+               case "$cf_cv_system_name" in
                (aix[[5-7]]*)
                        $2='.so'
                        $3=[$]$2
                        ;;
+               (*-msvc*)
+                       $2='.dll'
+                       $3='.dll.lib'
+                       ;;
                (cygwin*|msys*|mingw*)
                        $2='.dll'
                        $3='.dll.a'
@@ -4558,7 +5329,7 @@ AC_DEFUN([CF_LIB_SUFFIX],
                        $3=[$]$2
                        ;;
                (hpux*)
-                       case $target in
+                       case "$target" in
                        (ia64*)
                                $2='.so'
                                $3=[$]$2
@@ -4576,7 +5347,14 @@ AC_DEFUN([CF_LIB_SUFFIX],
                esac
                ;;
        (*)
-               $2='.a'
+               case "$target" in
+               (*-msvc*)
+                       $2='.lib'
+                       ;;
+               (*)
+                       $2='.a'
+                       ;;
+               esac
                $3=[$]$2
                ;;
        esac
@@ -4605,7 +5383,7 @@ AC_DEFUN([CF_LIB_TYPE],
        test -n "$LIB_SUFFIX" && $2="${LIB_SUFFIX}[$]{$2}"
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LINK_DATAONLY version: 12 updated: 2017/07/23 17:46:07
+dnl CF_LINK_DATAONLY version: 15 updated: 2023/12/03 10:03:10
 dnl ----------------
 dnl Some systems have a non-ANSI linker that doesn't pull in modules that have
 dnl only data (i.e., no functions), for example NeXT.  On those systems we'll
@@ -4627,17 +5405,21 @@ EOF
        rm -f conftest.$ac_ext data.o
        cat >conftest.$ac_ext <<EOF
 #line __oline__ "configure"
+extern int testfunc(void);
+#if defined(NeXT)
 int    testfunc(void)
 {
-#if defined(NeXT)
        ${cf_cv_main_return:-return}(1);        /* I'm told this linker is broken */
+}
 #else
-       extern int testdata[[3]];
+extern int testdata[[3]];
+int    testfunc(void)
+{
        return testdata[[0]] == 123
           &&  testdata[[1]] == 456
           &&  testdata[[2]] == 789;
-#endif
 }
+#endif
 EOF
        if AC_TRY_EVAL(ac_compile); then
                mv conftest.o func.o && \
@@ -4648,9 +5430,9 @@ EOF
        cf_saveLIBS="$LIBS"
        LIBS="conftest.a $LIBS"
        AC_TRY_RUN([
+       extern int testfunc(void);
        int main(void)
        {
-               extern int testfunc();
                ${cf_cv_main_return:-return} (!testfunc());
        }
        ],
@@ -4665,14 +5447,18 @@ if test "$cf_cv_link_dataonly" = no ; then
        AC_DEFINE(BROKEN_LINKER,1,[if data-only library module does not link])
        BROKEN_LINKER=1
 fi
+AC_SUBST(BROKEN_LINKER)
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LINK_FUNCS version: 9 updated: 2017/01/21 11:11:02
+dnl CF_LINK_FUNCS version: 13 updated: 2023/12/03 09:24:04
 dnl -------------
 dnl Most Unix systems have both link and symlink, a few don't have symlink.
 dnl A few non-Unix systems implement symlink, but not link.
 dnl A few non-systems implement neither (or have nonfunctional versions).
+dnl
+dnl This allows for a 2-second difference in modification times to allow for
+dnl some marginal NFS implementations.
 AC_DEFUN([CF_LINK_FUNCS],
 [
 AC_CHECK_HEADERS( \
@@ -4691,27 +5477,31 @@ else
                cf_cv_link_funcs=
                for cf_func in link symlink ; do
                        AC_TRY_RUN([
-#include <sys/types.h>
-#include <sys/stat.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
+$ac_includes_default
+
 int main(void)
 {
        int fail = 0;
-       char *src = "config.log";
-       char *dst = "conftest.chk";
-       struct stat src_sb;
-       struct stat dst_sb;
-
-       stat(src, &src_sb);
-       fail = ($cf_func("config.log", "conftest.chk") < 0)
-           || (stat(dst, &dst_sb) < 0)
-           || (dst_sb.st_mtime != src_sb.st_mtime);
+       char src[] = "conftest.tmp";
+       char dst[] = "conftest.chk";
+       struct stat src_sb, dst_sb;
+       FILE *fp = fopen(src, "w");
+       if (fp == 0) { fail = 3; } else {
+               fclose(fp); stat(src, &src_sb);
+               if ($cf_func(src, dst) < 0) {
+                       fail = 1;
+               } else if (stat(dst, &dst_sb) < 0) {
+                       fail = 2;
+               } else {
+                       long diff = (dst_sb.st_mtime - src_sb.st_mtime);
+                       if (diff < 0) diff = -diff;
+                       if (diff > 2) fail = 3;
+               }
+       }
 #ifdef HAVE_UNLINK
-       unlink(dst);
+       unlink(dst); unlink(src);
 #else
-       remove(dst);
+       remove(dst); remove(src);
 #endif
        ${cf_cv_main_return:-return} (fail);
 }
@@ -4728,14 +5518,15 @@ int main(void)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MAKEFLAGS version: 18 updated: 2018/02/21 21:26:03
+dnl CF_MAKEFLAGS version: 21 updated: 2021/09/04 06:47:34
 dnl ------------
 dnl Some 'make' programs support ${MAKEFLAGS}, some ${MFLAGS}, to pass 'make'
-dnl options to lower-levels.  It's very useful for "make -n" -- if we have it.
+dnl options to lower-levels.  It is very useful for "make -n" -- if we have it.
 dnl (GNU 'make' does both, something POSIX 'make', which happens to make the
 dnl ${MAKEFLAGS} variable incompatible because it adds the assignments :-)
 AC_DEFUN([CF_MAKEFLAGS],
-[
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+
 AC_CACHE_CHECK(for makeflags variable, cf_cv_makeflags,[
        cf_cv_makeflags=''
        for cf_option in '-${MAKEFLAGS}' '${MFLAGS}'
@@ -4745,10 +5536,10 @@ SHELL = $SHELL
 all :
        @ echo '.$cf_option'
 CF_EOF
-               cf_result=`${MAKE:-make} -k -f cf_makeflags.tmp 2>/dev/null | fgrep -v "ing directory" | sed -e 's,[[   ]]*$,,'`
+               cf_result=`${MAKE:-make} -k -f cf_makeflags.tmp 2>/dev/null | ${FGREP-fgrep} -v "ing directory" | sed -e 's,[[  ]]*$,,'`
                case "$cf_result" in
                (.*k|.*kw)
-                       cf_result=`${MAKE:-make} -k -f cf_makeflags.tmp CC=cc 2>/dev/null`
+                       cf_result="`${MAKE:-make} -k -f cf_makeflags.tmp CC=cc 2>/dev/null`"
                        case "$cf_result" in
                        (.*CC=*)        cf_cv_makeflags=
                                ;;
@@ -4770,6 +5561,89 @@ CF_EOF
 AC_SUBST(cf_cv_makeflags)
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_MAKE_PHONY version: 3 updated: 2021/01/08 16:08:21
+dnl -------------
+dnl Check if the make-program handles a ".PHONY" target, e.g,. a target which
+dnl acts as a placeholder.
+dnl
+dnl The ".PHONY" feature was proposed in 2011 here
+dnl     https://www.austingroupbugs.net/view.php?id=523
+dnl and is scheduled for release in P1003.1 Issue 8 (late 2022).
+dnl
+dnl This is not supported by SVr4 make (or SunOS 4, 4.3SD, etc), but works with
+dnl a few others (i.e., GNU make and the non-POSIX "BSD" make):
+dnl
+dnl + This is a GNU make feature (since April 1988, but in turn from binutils,
+dnl   date unspecified).
+dnl
+dnl + It was adopted in NetBSD make in June 1995.
+dnl
+dnl + The other BSD make programs are derived from the NetBSD make (and for
+dnl   that reason are not actually different "implementations").
+dnl
+dnl + Some features of NetBSD make were actually adapted from pmake, which
+dnl   began as a modified GNU make starting in 1993.
+dnl
+dnl + Version 3.8 of the dmake program in January 1992 also implemented this
+dnl   GNU make extension, but is less well known than the BSD make.
+AC_DEFUN([CF_MAKE_PHONY],[
+AC_CACHE_CHECK(for \".PHONY\" make-support, cf_cv_make_PHONY,[
+       rm -rf conftest*
+       (
+               mkdir conftest || exit 1
+               cd conftest
+               cat >makefile <<'CF_EOF'
+.PHONY: always
+DATA=0
+always:        always.out
+       @echo "** making [$]@ [$](DATA)"
+once: once.out
+       @echo "** making [$]@ [$](DATA)"
+always.out:
+       @echo "** making [$]@ [$](DATA)"
+       echo [$](DATA) > [$]@
+once.out:
+       @echo "** making [$]@ [$](DATA)"
+       echo [$](DATA) > [$]@
+CF_EOF
+               for cf_data in 1 2 3
+               do
+                       ${MAKE:-make} always DATA=$cf_data
+                       ${MAKE:-make} once   DATA=$cf_data
+                       ${MAKE:-make} -t always once
+                       if test -f always ; then
+                               echo "no (case 1)" > ../conftest.tmp
+                       elif test ! -f always.out ; then
+                               echo "no (case 2)" > ../conftest.tmp
+                       elif test ! -f once.out ; then
+                               echo "no (case 3)" > ../conftest.tmp
+                       elif ! cmp -s always.out once.out ; then
+                               echo "no (case 4)" > ../conftest.tmp
+                               diff always.out once.out
+                       else
+                               cf_check="`cat always.out`"
+                               if test "x$cf_check" != "x$cf_data" ; then
+                                       echo "no (case 5)" > ../conftest.tmp
+                               else
+                                       echo yes > ../conftest.tmp
+                                       rm -f ./*.out
+                                       continue
+                               fi
+                       fi
+                       break
+               done
+       ) >&AC_FD_CC 2>&1
+       cf_cv_make_PHONY="`cat conftest.tmp`"
+       rm -rf conftest*
+])
+MAKE_NO_PHONY="#"
+MAKE_PHONY="#"
+test "x$cf_cv_make_PHONY" = xyes && MAKE_PHONY=
+test "x$cf_cv_make_PHONY" != xyes && MAKE_NO_PHONY=
+AC_SUBST(MAKE_NO_PHONY)
+AC_SUBST(MAKE_PHONY)
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_MAKE_TAGS version: 6 updated: 2010/10/23 15:52:32
 dnl ------------
 dnl Generate tags/TAGS targets for makefiles.  Do not generate TAGS if we have
@@ -4807,13 +5681,16 @@ AC_SUBST(MAKE_UPPER_TAGS)
 AC_SUBST(MAKE_LOWER_TAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MANPAGE_FORMAT version: 11 updated: 2015/04/18 08:56:57
+dnl CF_MANPAGE_FORMAT version: 19 updated: 2024/03/30 08:27:40
 dnl -----------------
 dnl Option to allow user to override automatic configuration of manpage format.
 dnl There are several special cases:
 dnl
-dnl    gzip - man checks for, can display gzip'd files
 dnl    compress - man checks for, can display compressed files
+dnl    bzip2 - man checks for, can display bzip2'd files
+dnl    gzip - man checks for, can display gzip'd files
+dnl    xz - man checks for, can display xz'd files
+dnl
 dnl    BSDI - files in the cat-directories are suffixed ".0"
 dnl    formatted - installer should format (put files in cat-directory)
 dnl    catonly - installer should only format, e.g., for a turnkey system.
@@ -4827,8 +5704,9 @@ AC_REQUIRE([CF_PATHSEP])
 AC_MSG_CHECKING(format of man-pages)
 
 AC_ARG_WITH(manpage-format,
-       [  --with-manpage-format   specify manpage-format: gzip/compress/BSDI/normal and
-                          optionally formatted/catonly, e.g., gzip,formatted],
+       [  --with-manpage-format   specify manpage-format: gzip/compress/bzip2/xz,
+                          BSDI/normal and optionally formatted/catonly,
+                          e.g., gzip,formatted],
        [MANPAGE_FORMAT=$withval],
        [MANPAGE_FORMAT=unknown])
 
@@ -4837,31 +5715,33 @@ MANPAGE_FORMAT=`echo "$MANPAGE_FORMAT" | sed -e 's/,/ /g'`
 
 cf_unknown=
 
-case $MANPAGE_FORMAT in
+case "$MANPAGE_FORMAT" in
 (unknown)
        if test -z "$MANPATH" ; then
                MANPATH="/usr/man:/usr/share/man"
        fi
 
-       # look for the 'date' man-page (it's most likely to be installed!)
+       # look for the 'date' man-page (it is most likely to be installed!)
        MANPAGE_FORMAT=
-       cf_preform=no
-       cf_catonly=yes
-       cf_example=date
+       cf_preform="no"
+       cf_catonly="yes"
+       cf_example="date"
 
        IFS="${IFS:-    }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
        for cf_dir in $MANPATH; do
                test -z "$cf_dir" && cf_dir=/usr/man
                for cf_name in $cf_dir/man*/$cf_example.[[01]]* $cf_dir/cat*/$cf_example.[[01]]* $cf_dir/man*/$cf_example $cf_dir/cat*/$cf_example
                do
-                       cf_test=`echo $cf_name | sed -e 's/*//'`
+                       cf_test=`echo "$cf_name" | sed -e 's/*//'`
                        if test "x$cf_test" = "x$cf_name" ; then
 
                                case "$cf_name" in
-                               (*.gz) MANPAGE_FORMAT="$MANPAGE_FORMAT gzip";;
-                               (*.Z)  MANPAGE_FORMAT="$MANPAGE_FORMAT compress";;
-                               (*.0)  MANPAGE_FORMAT="$MANPAGE_FORMAT BSDI";;
-                               (*)    MANPAGE_FORMAT="$MANPAGE_FORMAT normal";;
+                               (*.bz2) MANPAGE_FORMAT="$MANPAGE_FORMAT bzip2";;
+                               (*.xz)  MANPAGE_FORMAT="$MANPAGE_FORMAT xz";;
+                               (*.gz)  MANPAGE_FORMAT="$MANPAGE_FORMAT gzip";;
+                               (*.Z)   MANPAGE_FORMAT="$MANPAGE_FORMAT compress";;
+                               (*.0)   MANPAGE_FORMAT="$MANPAGE_FORMAT BSDI";;
+                               (*)     MANPAGE_FORMAT="$MANPAGE_FORMAT normal";;
                                esac
 
                                case "$cf_name" in
@@ -4885,7 +5765,7 @@ case $MANPAGE_FORMAT in
                                        cf_found=yes
                                        ;;
                                esac
-                               test $cf_found=yes && break
+                               test "$cf_found" = yes && break
                        fi
                done
                # only check the first directory in $MANPATH where we find manpages
@@ -4899,8 +5779,8 @@ case $MANPAGE_FORMAT in
        ;;
 (*)
        for cf_option in $MANPAGE_FORMAT; do
-       case $cf_option in
-       (gzip|compress|BSDI|normal|formatted|catonly)
+       case "$cf_option" in
+       (xz|bzip2|gzip|compress|BSDI|normal|formatted|catonly)
                ;;
        (*)
                cf_unknown="$cf_unknown $cf_option"
@@ -4914,9 +5794,53 @@ AC_MSG_RESULT($MANPAGE_FORMAT)
 if test -n "$cf_unknown" ; then
        AC_MSG_WARN(Unexpected manpage-format $cf_unknown)
 fi
+
+cf_manpage_format=no
+cf_manpage_inboth=no
+cf_manpage_so_strip=
+cf_manpage_compress=
+cf_manpage_coptions=
+
+for cf_item in $MANPAGE_FORMAT
+do
+case "$cf_item" in
+(catonly)
+       cf_manpage_format=yes
+       cf_manpage_inboth=no
+       ;;
+(formatted)
+       cf_manpage_format=yes
+       cf_manpage_inboth=yes
+       ;;
+(compress)
+       cf_manpage_so_strip="Z"
+       cf_manpage_compress=compress
+       ;;
+(gzip)
+       cf_manpage_so_strip="gz"
+       cf_manpage_compress=gzip
+       cf_manpage_coptions=-n
+       ;;
+(bzip2)
+       cf_manpage_so_strip="bz2"
+       cf_manpage_compress=bzip2
+       ;;
+(xz)
+       cf_manpage_so_strip="xz"
+       cf_manpage_compress=xz
+       ;;
+esac
+done
+
+AC_SUBST(cf_manpage_format)
+AC_SUBST(cf_manpage_inboth)
+AC_SUBST(cf_manpage_so_strip)
+AC_SUBST(cf_manpage_compress)
+AC_SUBST(cf_manpage_coptions)
+
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MANPAGE_RENAMES version: 10 updated: 2015/08/05 20:44:28
+dnl CF_MANPAGE_RENAMES version: 17 updated: 2022/10/23 07:46:29
 dnl ------------------
 dnl The Debian people have their own naming convention for manpages.  This
 dnl option lets us override the name of the file containing renaming, or
@@ -4936,34 +5860,26 @@ case ".$MANPAGE_RENAMES" in
 (.|.yes)
        # Debian 'man' program?
        if test -f /etc/debian_version ; then
-               MANPAGE_RENAMES=`cd $srcdir && pwd`/man/man_db.renames
+               MANPAGE_RENAMES=man/man_db.renames
        else
                MANPAGE_RENAMES=no
        fi
        ;;
 esac
 
-if test "$MANPAGE_RENAMES" != no ; then
-       if test -f $srcdir/man/$MANPAGE_RENAMES ; then
-               MANPAGE_RENAMES=`cd $srcdir/man && pwd`/$MANPAGE_RENAMES
-       elif test ! -f $MANPAGE_RENAMES ; then
-               AC_MSG_ERROR(not a filename: $MANPAGE_RENAMES)
-       fi
-
-       test ! -d man && mkdir man
-
-       # Construct a sed-script to perform renaming within man-pages
-       if test -n "$MANPAGE_RENAMES" ; then
-               test ! -d man && mkdir man
-               $SHELL $srcdir/man/make_sed.sh $MANPAGE_RENAMES >./edit_man.sed
-       fi
+if test "$MANPAGE_RENAMES" = man/man_db.renames ; then
+       MANPAGE_RENAMES=`pwd`/$MANPAGE_RENAMES
+elif test "$MANPAGE_RENAMES" = no ; then
+       :
+elif test ! -f "$MANPAGE_RENAMES" ; then
+       AC_MSG_ERROR(not a filename: $MANPAGE_RENAMES)
 fi
 
 AC_MSG_RESULT($MANPAGE_RENAMES)
 AC_SUBST(MANPAGE_RENAMES)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MANPAGE_SYMLINKS version: 6 updated: 2015/04/17 21:13:04
+dnl CF_MANPAGE_SYMLINKS version: 7 updated: 2023/01/21 16:37:17
 dnl -------------------
 dnl Some people expect each tool to make all aliases for manpages in the
 dnl man-directory.  This accommodates the older, less-capable implementations
@@ -4997,7 +5913,7 @@ AC_ARG_WITH(manpage-symlinks,
        [MANPAGE_SYMLINKS=$withval],
        [MANPAGE_SYMLINKS=$cf_use_symlinks])
 
-if test "$$cf_use_symlinks" = no; then
+if test "$cf_use_symlinks" = no; then
 if test "$MANPAGE_SYMLINKS" = yes ; then
        AC_MSG_WARN(cannot make symlinks, will use .so files)
        MANPAGE_SYMLINKS=no
@@ -5025,7 +5941,32 @@ AC_ARG_WITH(manpage-tbl,
 AC_MSG_RESULT($MANPAGE_TBL)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MAN_PAGES version: 47 updated: 2017/08/12 07:58:51
+dnl CF_MB_LEN_MAX version: 1 updated: 2024/03/02 15:45:10
+dnl -------------
+dnl Check if <limits.h> defines a usable MB_LEN_MAX.  That may be because it is
+dnl not defined, or it may be a bogus value.
+AC_DEFUN([CF_MB_LEN_MAX],[
+AC_CACHE_CHECK(if MB_LEN_MAX is usable,cf_cv_mb_len_max,[
+AC_TRY_COMPILE([
+$ac_includes_default
+#include <limits.h>],
+[
+#if defined(MB_LEN_MAX) && MB_LEN_MAX >= 6
+       ${cf_cv_main_return:-return}(0);
+#else
+#error MB_LEN_MAX is not usable
+#endif
+],     [cf_cv_mb_len_max=yes],
+       [cf_cv_mb_len_max=no])])
+if test "$cf_cv_mb_len_max" = yes
+then
+       AC_DEFINE(HAVE_CONSISTENT_MB_LEN_MAX,1,[Define to 1 if MB_LEN_MAX is usable])
+else
+       AC_MSG_WARN(MB_LEN_MAX is missing/inconsistent in system headers)
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_MAN_PAGES version: 59 updated: 2024/03/30 08:27:40
 dnl ------------
 dnl Try to determine if the man-pages on the system are compressed, and if
 dnl so, what format is used.  Use this information to construct a script that
@@ -5044,36 +5985,8 @@ else
        cf_prefix="$prefix"
 fi
 
-case "$MANPAGE_FORMAT" in
-(*catonly*)
-       cf_format=yes
-       cf_inboth=no
-       ;;
-(*formatted*)
-       cf_format=yes
-       cf_inboth=yes
-       ;;
-(*)
-       cf_format=no
-       cf_inboth=no
-       ;;
-esac
-
 test ! -d man && mkdir man
 
-cf_so_strip=
-cf_compress=
-case "$MANPAGE_FORMAT" in
-(*compress*)
-       cf_so_strip="Z"
-       cf_compress=compress
-       ;;
-(*gzip*)
-       cf_so_strip="gz"
-       cf_compress=gzip
-       ;;
-esac
-
 cf_edit_man=./edit_man.sh
 cf_man_alias=`pwd`/man_alias.sed
 
@@ -5091,6 +6004,7 @@ NCURSES_PATCH="$NCURSES_PATCH"
 
 NCURSES_OSPEED="$NCURSES_OSPEED"
 TERMINFO="$TERMINFO"
+TERMINFO_DIRS="$TERMINFO_DIRS"
 
 INSTALL="$INSTALL"
 INSTALL_DATA="$INSTALL_DATA"
@@ -5098,7 +6012,8 @@ INSTALL_DATA="$INSTALL_DATA"
 transform="$program_transform_name"
 
 TMP=\${TMPDIR:=/tmp}/man\$\$
-trap "rm -f \$TMP" 0 1 2 3 15
+trap "rm -f \$TMP; exit 1" 1 2 3 15
+trap "rm -f \$TMP" 0
 
 form=\[$]1
 shift || exit 1
@@ -5114,9 +6029,9 @@ top_srcdir=\[$]srcdir/..
 shift || exit 1
 
 if test "\$form" = normal ; then
-       if test "$cf_format" = yes ; then
-       if test "$cf_inboth" = no ; then
-               $SHELL \[$]0 format \$verb \$mandir \$srcdir \[$]*
+       if test "$cf_manpage_format" = yes ; then
+       if test "$cf_manpage_inboth" = no ; then
+               $SHELL "\[$]0" format "\$verb" "\$mandir" "\$srcdir" "\[$]@"
                exit $?
        fi
        fi
@@ -5128,19 +6043,19 @@ else
 fi
 
 # process the list of source-files
-for i in \[$]* ; do
+for i in "\[$]@" ; do
 case \$i in
 (*.orig|*.rej) ;;
 (*.[[0-9]]*)
        section=\`expr "\$i" : '.*\\.\\([[0-9]]\\)[[xm]]*'\`;
-       if test \$verb = installing ; then
-       if test ! -d \$cf_subdir\${section} ; then
-               mkdir -p \$cf_subdir\$section
+       if test "\$verb" = installing ; then
+       if test ! -d "\$cf_subdir\${section}" ; then
+               mkdir -p "\$cf_subdir\$section"
        fi
        fi
 
        # replace variables in man page
-       if test ! -f $cf_man_alias ; then
+       if test ! -f "$cf_man_alias" ; then
 cat >>$cf_man_alias <<-CF_EOF2
                s,@DATADIR@,\$datadir,g
                s,@TERMINFO@,\${TERMINFO:="no default value"},g
@@ -5154,7 +6069,7 @@ CF_EOF
        for cf_name in $1
        do
                cf_NAME=`echo "$cf_name" | sed y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%`
-               cf_name=`echo $cf_name|sed "$program_transform_name"`
+               cf_name=`echo "$cf_name" | sed "$program_transform_name"`
 cat >>$cf_edit_man <<-CF_EOF
                s,@$cf_NAME@,$cf_name,g
 CF_EOF
@@ -5166,11 +6081,11 @@ CF_EOF2
        fi
 
        aliases=
-       cf_source=\`basename \$i\`
-       inalias=\$cf_source
-       test ! -f \$inalias && inalias="\$srcdir/\$inalias"
-       if test ! -f \$inalias ; then
-               echo .. skipped \$cf_source
+       cf_source=\`basename "\$i"\`
+       cf_full_alias=\$cf_source
+       test ! -f "\$cf_full_alias" && cf_full_alias="\$srcdir/\$cf_full_alias"
+       if test ! -f "\$cf_full_alias" ; then
+               echo ".. skipped \$cf_source"
                continue
        fi
 CF_EOF
@@ -5178,8 +6093,9 @@ CF_EOF
 if test "$MANPAGE_ALIASES" != no ; then
 cat >>$cf_edit_man <<CF_EOF
        nCurses=ignore.3x
-       test $with_curses_h = yes && nCurses=ncurses.3x
-       aliases=\`sed -f \$top_srcdir/man/manlinks.sed \$inalias |sed -f $cf_man_alias | sort -u; test \$inalias = \$nCurses && echo curses\`
+       cf_part_alias=\`echo \$cf_full_alias| sed -e 's,^.*/,,'\`
+       test "$with_curses_h" = yes && nCurses=ncurses.3x
+       aliases=\`sed -f "\$top_srcdir/man/manlinks.sed" "\$cf_full_alias" |sed -f "$cf_man_alias" | sort -u; test "\$cf_part_alias" = "\$nCurses" && echo curses\`
 CF_EOF
 fi
 
@@ -5196,7 +6112,7 @@ else
 cat >>$cf_edit_man <<CF_EOF
        cf_target=\`grep "^\$cf_source" $MANPAGE_RENAMES | $AWK '{print \[$]2}'\`
        if test -z "\$cf_target" ; then
-               echo '? missing rename for '\$cf_source
+               echo "? missing rename for \$cf_source"
                cf_target="\$cf_source"
        fi
        cf_target="\$cf_subdir\${section}/\${cf_target}"
@@ -5205,16 +6121,16 @@ CF_EOF
 fi
 
 cat >>$cf_edit_man <<CF_EOF
-       sed     -f $cf_man_alias \\
+       sed     -f "$cf_man_alias" \\
 CF_EOF
 
-if test -f $MANPAGE_RENAMES ; then
+if test "$MANPAGE_RENAMES" != no ; then
 cat >>$cf_edit_man <<CF_EOF
-               < \$i | sed -f `pwd`/edit_man.sed >\$TMP
+               < "\$i" | sed -f `pwd`/edit_man.sed >\$TMP
 CF_EOF
 else
 cat >>$cf_edit_man <<CF_EOF
-               < \$i >\$TMP
+               < "\$i" >\$TMP
 CF_EOF
 fi
 
@@ -5225,86 +6141,95 @@ if test \$cf_tables = yes ; then
 fi
 CF_EOF
 
-if test $with_overwrite != yes ; then
+if test "$with_overwrite" != yes ; then
 cat >>$cf_edit_man <<CF_EOF
-       sed -e "/\#[    ]*include/s,<curses.h,<ncurses$LIB_SUFFIX/curses.h," < \$TMP >\$TMP.out
+       sed -e "/\\#[    ]*include/s,<curses.h,<ncurses$LIB_SUFFIX/curses.h," < \$TMP >\$TMP.out
        mv \$TMP.out \$TMP
 CF_EOF
 fi
 
-if test $with_curses_h != yes ; then
+if test "$with_curses_h" != yes ; then
 cat >>$cf_edit_man <<CF_EOF
-       sed -e "/\#[    ]*include/s,curses.h,ncurses.h," < \$TMP >\$TMP.out
+       sed -e "/\\#[    ]*include/s,curses.h,ncurses.h," < \$TMP >\$TMP.out
        mv \$TMP.out \$TMP
 CF_EOF
 fi
 
 cat >>$cf_edit_man <<CF_EOF
-       if test \$form = format ; then
+       if test "\$form" = format ; then
                nroff -man \$TMP >\$TMP.out
                mv \$TMP.out \$TMP
        fi
 CF_EOF
 
-if test -n "$cf_compress" ; then
+if test -n "$cf_manpage_compress" ; then
 cat >>$cf_edit_man <<CF_EOF
-       if test \$verb = installing ; then
-       if ( $cf_compress -f \$TMP )
+       if test "\$verb" = installing ; then
+       if ( "$cf_manpage_compress" -f \$TMP )
        then
-               mv \$TMP.$cf_so_strip \$TMP
+               mv \$TMP.$cf_manpage_so_strip \$TMP
        fi
        fi
-       cf_target="\$cf_target.$cf_so_strip"
+       cf_target="\$cf_target.$cf_manpage_so_strip"
 CF_EOF
 fi
 
 case "$MANPAGE_FORMAT" in
 (*BSDI*)
 cat >>$cf_edit_man <<CF_EOF
-       if test \$form = format ; then
+       if test "\$form" = format ; then
                # BSDI installs only .0 suffixes in the cat directories
-               cf_target="\`echo \$cf_target|sed -e 's/\.[[1-9]]\+[[a-z]]*/.0/'\`"
+               cf_target="\`echo \$cf_target|sed -e 's/\\.[[1-9]]\\+[[a-z]]*/.0/'\`"
        fi
 CF_EOF
   ;;
 esac
 
 cat >>$cf_edit_man <<CF_EOF
-       suffix=\`basename \$cf_target | sed -e 's%^[[^.]]*%%'\`
-       if test \$verb = installing ; then
-               echo \$verb \$cf_target
-               \$INSTALL_DATA \$TMP \$cf_target
-               test -d \$cf_subdir\${section} &&
+       suffix=\`basename "\$cf_target" | sed -e 's%^[[^.]]*%%'\`
+       extra_suffix=
+       if test -n "$EXTRA_SUFFIX" ; then
+               case \$cf_target in
+               (*${EXTRA_SUFFIX}\$suffix)
+                       extra_suffix="$EXTRA_SUFFIX"
+                       ;;
+               esac
+       fi
+       if test "\$verb" = installing ; then
+               echo "\$verb \$cf_target"
+               \$INSTALL_DATA \$TMP "\$cf_target"
+               test -d "\$cf_subdir\${section}" &&
                test -n "\$aliases" && (
-                       cd \$cf_subdir\${section} && (
-                               cf_source=\`echo \$cf_target |sed -e 's%^.*/\([[^/]][[^/]]*/[[^/]][[^/]]*$\)%\1%'\`
-                               test -n "$cf_so_strip" && cf_source=\`echo \$cf_source |sed -e 's%\.$cf_so_strip\$%%'\`
-                               cf_target=\`basename \$cf_target\`
+                       cd "\$cf_subdir\${section}" && (
+                               cf_source=\`echo "\$cf_target" |sed -e 's%^.*/\\([[^/]][[^/]]*/[[^/]][[^/]]*$\\)%\\1%'\`
+                               test -n "$cf_manpage_so_strip" && cf_source=\`echo "\$cf_source" |sed -e 's%\\.$cf_manpage_so_strip\$%%'\`
+                               cf_target=\`basename "\$cf_target"\`
                                for cf_alias in \$aliases
                                do
-                                       if test \$section = 1 ; then
-                                               cf_alias=\`echo \$cf_alias|sed "\${transform}"\`
+                                       if test "\$section" = 1 ; then
+                                               cf_alias=\`echo "\$cf_alias" |sed "\${transform}"\`
                                        fi
+                                       cf_alias="\${cf_alias}\${extra_suffix}"
 
                                        if test "$MANPAGE_SYMLINKS" = yes ; then
-                                               if test -f \$cf_alias\${suffix} ; then
-                                                       if ( cmp -s \$cf_target \$cf_alias\${suffix} )
+                                               if test -f "\$cf_alias\${suffix}" ; then
+                                                       if ( cmp -s "\$cf_target" "\$cf_alias\${suffix}" )
                                                        then
                                                                continue
                                                        fi
                                                fi
-                                               echo .. \$verb alias \$cf_alias\${suffix}
+                                               echo ".. \$verb alias \$cf_alias\${suffix}"
 CF_EOF
 case "x$LN_S" in
 (*-f)
 cat >>$cf_edit_man <<CF_EOF
-                                               $LN_S \$cf_target \$cf_alias\${suffix}
+                                               $LN_S "\$cf_target" "\$cf_alias\${suffix}"
 CF_EOF
        ;;
 (*)
 cat >>$cf_edit_man <<CF_EOF
-                                               rm -f \$cf_alias\${suffix}
-                                               $LN_S \$cf_target \$cf_alias\${suffix}
+                                               rm -f "\$cf_alias\${suffix}"
+                                               $LN_S "\$cf_target" "\$cf_alias\${suffix}"
 CF_EOF
        ;;
 esac
@@ -5312,38 +6237,39 @@ cat >>$cf_edit_man <<CF_EOF
                                        elif test "\$cf_target" != "\$cf_alias\${suffix}" ; then
                                                echo ".so \$cf_source" >\$TMP
 CF_EOF
-if test -n "$cf_compress" ; then
+if test -n "$cf_manpage_compress" ; then
 cat >>$cf_edit_man <<CF_EOF
-                                               if test -n "$cf_so_strip" ; then
-                                                       $cf_compress -f \$TMP
-                                                       mv \$TMP.$cf_so_strip \$TMP
+                                               if test -n "$cf_manpage_so_strip" ; then
+                                                       "$cf_manpage_compress" $cf_manpage_coptions -f \$TMP
+                                                       mv \$TMP.$cf_manpage_so_strip \$TMP
                                                fi
 CF_EOF
 fi
 cat >>$cf_edit_man <<CF_EOF
-                                               echo .. \$verb alias \$cf_alias\${suffix}
-                                               rm -f \$cf_alias\${suffix}
-                                               \$INSTALL_DATA \$TMP \$cf_alias\${suffix}
+                                               echo ".. \$verb alias \$cf_alias\${suffix}"
+                                               rm -f "\$cf_alias\${suffix}"
+                                               \$INSTALL_DATA \$TMP "\$cf_alias\${suffix}"
                                        fi
                                done
                        )
                )
-       elif test \$verb = removing ; then
-               test -f \$cf_target && (
-                       echo \$verb \$cf_target
-                       rm -f \$cf_target
+       elif test "\$verb" = removing ; then
+               test -f "\$cf_target" && (
+                       echo "\$verb \$cf_target"
+                       rm -f "\$cf_target"
                )
-               test -d \$cf_subdir\${section} &&
+               test -d "\$cf_subdir\${section}" &&
                test -n "\$aliases" && (
-                       cd \$cf_subdir\${section} && (
+                       cd "\$cf_subdir\${section}" && (
                                for cf_alias in \$aliases
                                do
-                                       if test \$section = 1 ; then
-                                               cf_alias=\`echo \$cf_alias|sed "\${transform}"\`
+                                       if test "\$section" = 1 ; then
+                                               cf_alias=\`echo "\$cf_alias" |sed "\${transform}"\`
                                        fi
+                                       cf_alias="\${cf_alias}\${extra_suffix}"
 
-                                       echo .. \$verb alias \$cf_alias\${suffix}
-                                       rm -f \$cf_alias\${suffix}
+                                       echo ".. \$verb alias \$cf_alias\${suffix}"
+                                       rm -f "\$cf_alias\${suffix}"
                                done
                        )
                )
@@ -5355,19 +6281,30 @@ cat >>$cf_edit_man <<CF_EOF
 esac
 done
 
-if test $cf_inboth = yes ; then
-if test \$form != format ; then
-       $SHELL \[$]0 format \$verb \$mandir \$srcdir \[$]*
+if test "$cf_manpage_inboth" = yes ; then
+if test "\$form" != format ; then
+       $SHELL "\[$]0" format "\$verb" "\$mandir" "\$srcdir" "\[$]@"
 fi
 fi
 
 exit 0
 CF_EOF
-chmod 755 $cf_edit_man
+chmod 755 "$cf_edit_man"
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MATH_LIB version: 9 updated: 2017/01/21 11:06:25
+dnl CF_MAP_LIB_BASENAME version: 2 updated: 2021/01/02 17:09:14
+dnl -------------------
+dnl Convert a default-libname to the actual one used via CF_WITH_LIB_BASENAME.
+dnl
+dnl $1 = variable to set
+dnl $2 = default-libname
+AC_DEFUN([CF_MAP_LIB_BASENAME],[
+CF_UPPER(cf_map_lib_basename,$2)
+eval $1="\$${cf_map_lib_basename}_NAME"
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_MATH_LIB version: 11 updated: 2022/07/27 19:01:48
 dnl -----------
 dnl Checks for libraries.  At least one UNIX system, Apple Macintosh
 dnl Rhapsody 5.5, does not have -lm.  We cannot use the simpler
@@ -5377,22 +6314,46 @@ AC_DEFUN([CF_MATH_LIB],
 AC_CACHE_CHECK(if -lm needed for math functions,
        cf_cv_need_libm,[
        AC_TRY_LINK([
-       #include <stdio.h>
-       #include <stdlib.h>
-       #include <math.h>
+               #include <stdio.h>
+               #include <stdlib.h>
+               #include <math.h>
        ],
-       [double x = rand(); printf("result = %g\n", ]ifelse([$2],,sin(x),$2)[)],
+       [double x = rand(); printf("result = %g\\n", ]ifelse([$2],,sin(x),$2)[)],
        [cf_cv_need_libm=no],
        [cf_cv_need_libm=yes])])
+
 if test "$cf_cv_need_libm" = yes
 then
-ifelse($1,,[
-       CF_ADD_LIB(m)
-],[$1=-lm])
+
+       cf_save_LIBS="$LIBS"
+       LIBS="$LIBS -lm"
+       AC_CACHE_CHECK(if -lm is available for math functions,
+       cf_cv_have_libm,[
+       AC_TRY_LINK([
+               #include <stdio.h>
+               #include <stdlib.h>
+               #include <math.h>
+       ],
+       [double x = rand(); printf("result = %g\\n", ]ifelse([$2],,sin(x),$2)[)],
+       [cf_cv_have_libm=yes],
+       [cf_cv_have_libm=no])])
+       LIBS="$cf_save_LIBS"
+
+       if test "$cf_cv_have_libm" = yes
+       then
+               ifelse($1,,[CF_ADD_LIB(m)],[$1=-lm])
+       fi
+else
+       cf_cv_have_libm=yes
+fi
+
+if test "$cf_cv_have_libm" = yes
+then
+       AC_DEFINE(HAVE_MATH_FUNCS,1,[Define to 1 if math functions are available])
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_MIXEDCASE_FILENAMES version: 7 updated: 2015/04/12 15:39:00
+dnl CF_MIXEDCASE_FILENAMES version: 9 updated: 2021/01/01 16:53:59
 dnl ----------------------
 dnl Check if the file-system supports mixed-case filenames.  If we're able to
 dnl create a lowercase name and see it as uppercase, it doesn't support that.
@@ -5400,8 +6361,8 @@ AC_DEFUN([CF_MIXEDCASE_FILENAMES],
 [
 AC_CACHE_CHECK(if filesystem supports mixed-case filenames,cf_cv_mixedcase,[
 if test "$cross_compiling" = yes ; then
-       case $target_alias in
-       (*-os2-emx*|*-msdosdjgpp*|*-cygwin*|*-msys*|*-mingw*|*-uwin*)
+       case "$target_alias" in
+       (*-os2-emx*|*-msdosdjgpp*|*-cygwin*|*-msys*|*-mingw*|*-uwin*|darwin*)
                cf_cv_mixedcase=no
                ;;
        (*)
@@ -5422,7 +6383,7 @@ fi
 test "$cf_cv_mixedcase" = yes && AC_DEFINE(MIXEDCASE_FILENAMES,1,[Define to 1 if filesystem supports mixed-case filenames.])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MKSTEMP version: 10 updated: 2017/01/21 11:12:16
+dnl CF_MKSTEMP version: 13 updated: 2023/12/01 17:22:50
 dnl ----------
 dnl Check for a working mkstemp.  This creates two files, checks that they are
 dnl successfully created and distinct (AmigaOS apparently fails on the last).
@@ -5431,19 +6392,13 @@ AC_CHECK_HEADERS( \
 unistd.h \
 )
 AC_CACHE_CHECK(for working mkstemp, cf_cv_func_mkstemp,[
-rm -rf conftest*
+rm -rf ./conftest*
 AC_TRY_RUN([
-#include <sys/types.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
+$ac_includes_default
+
 int main(void)
 {
-       char *tmpl = "conftestXXXXXX";
+       static char tmpl[] = "conftestXXXXXX";
        char name[2][80];
        int n;
        int result = 0;
@@ -5488,23 +6443,24 @@ AC_DEFUN([CF_MSG_LOG],[
 echo "${as_me:-configure}:__oline__: testing $* ..." 1>&AC_FD_CC
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_NCURSES_ABI_6 version: 3 updated: 2015/06/06 16:10:11
+dnl CF_NCURSES_ABI_6 version: 5 updated: 2023/01/07 16:32:06
 dnl ----------------
 dnl Set ncurses' ABI to 6 unless overridden by explicit configure option, and
 dnl warn about this.
 AC_DEFUN([CF_NCURSES_ABI_6],[
 if test "${with_abi_version+set}" != set; then
-       case $cf_cv_rel_version in
+       case "$cf_cv_rel_version" in
        (5.*)
                cf_cv_rel_version=6.0
                cf_cv_abi_version=6
-               AC_MSG_WARN(overriding ABI version to $cf_cv_abi_version)
+               cf_cv_abi_default=6
+               AC_MSG_WARN(overriding ABI version to $cf_cv_abi_default)
                ;;
        esac
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_NCURSES_WITH_ABI_VERSION version: 2 updated: 2015/12/19 17:51:52
+dnl CF_NCURSES_WITH_ABI_VERSION version: 3 updated: 2021/01/01 13:31:04
 dnl ---------------------------
 dnl Allow ncurses's ABI to be overridden.  Generally this happens when a
 dnl packager has incremented the ABI past that used in the original package,
@@ -5516,7 +6472,7 @@ AC_DEFUN([CF_NCURSES_WITH_ABI_VERSION],[
 CF_WITH_ABI_VERSION($1)
 if test "x$cf_cv_abi_version" != "x$with_abi_version"
 then
-       case $cf_cv_rel_version in
+       case "$cf_cv_rel_version" in
        (5.*)
                cf_cv_rel_version=$with_abi_version.0
                ;;
@@ -5524,23 +6480,33 @@ then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_NO_LEAKS_OPTION version: 6 updated: 2015/04/12 15:39:00
+dnl CF_NO_LEAKS_OPTION version: 9 updated: 2021/06/13 19:45:41
 dnl ------------------
 dnl see CF_WITH_NO_LEAKS
+dnl
+dnl $1 = option/name
+dnl $2 = help-text
+dnl $3 = symbol to define if the option is set
+dnl $4 = additional actions to take if the option is set
 AC_DEFUN([CF_NO_LEAKS_OPTION],[
 AC_MSG_CHECKING(if you want to use $1 for testing)
 AC_ARG_WITH($1,
        [$2],
-       [AC_DEFINE_UNQUOTED($3,1,"Define to 1 if you want to use $1 for testing.")ifelse([$4],,[
+       [case "x$withval" in
+       (x|xno) ;;
+       (*)
+               : "${with_cflags:=-g}"
+               : "${enable_leaks:=no}"
+               with_$1=yes
+               AC_DEFINE_UNQUOTED($3,1,"Define to 1 if you want to use $1 for testing.")ifelse([$4],,[
         $4
 ])
-       : ${with_cflags:=-g}
-       : ${with_no_leaks:=yes}
-        with_$1=yes],
+               ;;
+       esac],
        [with_$1=])
 AC_MSG_RESULT(${with_$1:-no})
 
-case .$with_cflags in
+case ".$with_cflags" in
 (.*-g*)
        case .$CFLAGS in
        (.*-g*)
@@ -5553,15 +6519,15 @@ case .$with_cflags in
 esac
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_NUMBER_SYNTAX version: 2 updated: 2015/04/17 21:13:04
+dnl CF_NUMBER_SYNTAX version: 3 updated: 2023/05/06 16:14:29
 dnl ----------------
-dnl Check if the given variable is a number.  If not, report an error.
+dnl Check if the given variable is a positive integer.  Report an error if not.
 dnl $1 is the variable
 dnl $2 is the message
 AC_DEFUN([CF_NUMBER_SYNTAX],[
 if test -n "$1" ; then
-  case $1 in
-  ([[0-9]]*)
+  case `echo "$1" | sed -e 's/^[[0-9]]*$/0/g'` in
+  (0)
        ;;
   (*)
        AC_MSG_ERROR($2 is not a number: $1)
@@ -5572,7 +6538,7 @@ else
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_OBJ_SUBDIR version: 7 updated: 2015/04/17 21:13:04
+dnl CF_OBJ_SUBDIR version: 8 updated: 2021/01/01 13:31:04
 dnl -------------
 dnl Compute the object-directory name from the given model name
 AC_DEFUN([CF_OBJ_SUBDIR],
@@ -5583,7 +6549,7 @@ AC_DEFUN([CF_OBJ_SUBDIR],
        (debug)   $2='obj_g' ;;
        (profile) $2='obj_p' ;;
        (shared)
-               case $cf_cv_system_name in
+               case "$cf_cv_system_name" in
                (cygwin|msys)
                        $2='objects' ;;
                (*)
@@ -5592,14 +6558,29 @@ AC_DEFUN([CF_OBJ_SUBDIR],
        esac
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PATHSEP version: 7 updated: 2015/04/12 15:39:00
+dnl CF_OUTPUT_MANPAGE_RENAMES version: 2 updated: 2022/10/22 19:12:31
+dnl -------------------------
+dnl This runs in the output step to config.status, after man_db.renames has
+dnl been generated.
+AC_DEFUN([CF_OUTPUT_MANPAGE_RENAMES],
+[
+AC_REQUIRE([CF_MANPAGE_RENAMES])
+if test "$MANPAGE_RENAMES" != no ; then
+       # Construct a sed-script to perform renaming within man-pages
+       test -n "$verbose" && echo "creating edit_man.sed"
+       test ! -d man && mkdir man
+       FGREP="${FGREP-grep -F}" $SHELL "$srcdir/man/make_sed.sh" "$MANPAGE_RENAMES" >./edit_man.sed
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_PATHSEP version: 8 updated: 2021/01/01 13:31:04
 dnl ----------
 dnl Provide a value for the $PATH and similar separator (or amend the value
 dnl as provided in autoconf 2.5x).
 AC_DEFUN([CF_PATHSEP],
 [
        AC_MSG_CHECKING(for PATH separator)
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (os2*)  PATH_SEPARATOR=';'  ;;
        (*)     ${PATH_SEPARATOR:=':'}  ;;
        esac
@@ -5608,7 +6589,7 @@ ifelse([$1],,,[$1=$PATH_SEPARATOR])
        AC_MSG_RESULT($PATH_SEPARATOR)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PATH_PROG version: 10 updated: 2019/06/30 19:44:43
+dnl CF_PATH_PROG version: 12 updated: 2021/01/02 09:31:20
 dnl ------------
 dnl Check for a given program, defining corresponding symbol.
 dnl    $1 = environment variable, which is suffixed by "_PATH" in the #define.
@@ -5623,7 +6604,7 @@ dnl FIXME: we should allow this to be overridden by environment variables
 dnl
 AC_DEFUN([CF_PATH_PROG],[
 AC_REQUIRE([CF_PATHSEP])
-test -z "[$]$1" && $1=$2
+test -z "[$]$1" && $1="$2"
 AC_PATH_PROGS($1,[$]$1 $2 ifelse($3,,,$3),[$]$1, ifelse($4,,,$4))
 
 cf_path_prog=""
@@ -5636,7 +6617,7 @@ do
                        CF_PATH_SYNTAX(cf_temp,break)
                        cf_path_prog="$cf_temp"
                else
-                       cf_path_prog="`basename $cf_temp`"
+                       cf_path_prog="`basename "$cf_temp"`"
                fi
        elif test -z "$cf_path_args" ; then
                cf_path_args="$cf_temp"
@@ -5653,7 +6634,7 @@ if test -n "$cf_path_prog" ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PATH_SYNTAX version: 16 updated: 2015/04/18 08:56:57
+dnl CF_PATH_SYNTAX version: 18 updated: 2020/12/31 18:40:20
 dnl --------------
 dnl Check the argument to see that it looks like a pathname.  Rewrite it if it
 dnl begins with one of the prefix/exec_prefix variables, and then again if the
@@ -5673,16 +6654,16 @@ case ".[$]$1" in
        ;;
 (.[[a-zA-Z]]:[[\\/]]*) # OS/2 EMX
        ;;
-(.\[$]{*prefix}*|.\[$]{*dir}*)
+(.\[$]\{*prefix\}*|.\[$]\{*dir\}*)
        eval $1="[$]$1"
        case ".[$]$1" in
        (.NONE/*)
-               $1=`echo [$]$1 | sed -e s%NONE%$cf_path_syntax%`
+               $1=`echo "[$]$1" | sed -e s%NONE%$cf_path_syntax%`
                ;;
        esac
        ;;
 (.no|.NONE/*)
-       $1=`echo [$]$1 | sed -e s%NONE%$cf_path_syntax%`
+       $1=`echo "[$]$1" | sed -e s%NONE%$cf_path_syntax%`
        ;;
 (*)
        ifelse([$2],,[AC_MSG_ERROR([expected a pathname, not \"[$]$1\"])],$2)
@@ -5690,19 +6671,21 @@ case ".[$]$1" in
 esac
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PKG_CONFIG version: 10 updated: 2015/04/26 18:06:58
+dnl CF_PKG_CONFIG version: 13 updated: 2023/10/28 11:59:01
 dnl -------------
 dnl Check for the package-config program, unless disabled by command-line.
+dnl
+dnl Sets $PKG_CONFIG to the pathname of the pkg-config program.
 AC_DEFUN([CF_PKG_CONFIG],
 [
 AC_MSG_CHECKING(if you want to use pkg-config)
 AC_ARG_WITH(pkg-config,
-       [  --with-pkg-config{=path} enable/disable use of pkg-config],
+       [[  --with-pkg-config[=CMD] enable/disable use of pkg-config and its name CMD]],
        [cf_pkg_config=$withval],
        [cf_pkg_config=yes])
 AC_MSG_RESULT($cf_pkg_config)
 
-case $cf_pkg_config in
+case "$cf_pkg_config" in
 (no)
        PKG_CONFIG=none
        ;;
@@ -5726,7 +6709,7 @@ fi
 AC_SUBST(PKG_CONFIG)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_POSIX_C_SOURCE version: 11 updated: 2018/12/31 20:46:17
+dnl CF_POSIX_C_SOURCE version: 12 updated: 2023/02/18 17:41:25
 dnl -----------------
 dnl Define _POSIX_C_SOURCE to the given level, and _POSIX_SOURCE if needed.
 dnl
@@ -5757,7 +6740,7 @@ AC_CACHE_CHECK(if we should define _POSIX_C_SOURCE,cf_cv_posix_c_source,[
        CF_MSG_LOG(if the symbol is already defined go no further)
        AC_TRY_COMPILE([#include <sys/types.h>],[
 #ifndef _POSIX_C_SOURCE
-make an error
+#error _POSIX_C_SOURCE is not defined
 #endif],
        [cf_cv_posix_c_source=no],
        [cf_want_posix_source=no
@@ -5776,7 +6759,7 @@ make an error
         if test "$cf_want_posix_source" = yes ; then
                AC_TRY_COMPILE([#include <sys/types.h>],[
 #ifdef _POSIX_SOURCE
-make an error
+#error _POSIX_SOURCE is defined
 #endif],[],
                cf_cv_posix_c_source="$cf_cv_posix_c_source -D_POSIX_SOURCE")
         fi
@@ -5787,7 +6770,7 @@ make an error
         CF_MSG_LOG(if the second compile does not leave our definition intact error)
         AC_TRY_COMPILE([#include <sys/types.h>],[
 #ifndef _POSIX_C_SOURCE
-make an error
+#error _POSIX_C_SOURCE is not defined
 #endif],,
         [cf_cv_posix_c_source=no])
         CFLAGS="$cf_save_CFLAGS"
@@ -5832,7 +6815,7 @@ AC_TRY_COMPILE([#include <stdio.h>],[
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PREDEFINE version: 2 updated: 2010/05/26 16:44:57
+dnl CF_PREDEFINE version: 3 updated: 2023/02/18 17:41:25
 dnl ------------
 dnl Add definitions to CPPFLAGS to ensure they're predefined for all compiles.
 dnl
@@ -5844,7 +6827,7 @@ AC_MSG_CHECKING(if we must define $1)
 AC_TRY_COMPILE([#include <sys/types.h>
 ],[
 #ifndef $1
-make an error
+#error $1 is not defined
 #endif],[cf_result=no],[cf_result=yes])
 AC_MSG_RESULT($cf_result)
 
@@ -5855,7 +6838,7 @@ elif test "x$2" != "x" ; then
        AC_TRY_COMPILE([#include <sys/types.h>
 ],[
 #if $1-$2 < 0
-make an error
+#error $1-$2 is negative
 #endif],[cf_result=yes],[cf_result=no])
        AC_MSG_RESULT($cf_result)
        if test "$cf_result" = no ; then
@@ -5865,7 +6848,7 @@ make an error
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PRG_RULES version: 1 updated: 2006/06/03 11:45:08
+dnl CF_PRG_RULES version: 2 updated: 2021/01/01 13:31:04
 dnl ------------
 dnl Append definitions and rules for the given programs to the subdirectory
 dnl Makefiles, and the recursion rule for the top-level Makefile.
@@ -5880,10 +6863,10 @@ AC_DEFUN([CF_PRG_RULES],
 [
 for cf_dir in $2
 do
-       if test ! -d $srcdir/$cf_dir; then
+       if test ! -d "$srcdir/$cf_dir" ; then
                continue
-       elif test -f $srcdir/$cf_dir/programs; then
-               $AWK -f $1 $srcdir/$cf_dir/programs >>$cf_dir/Makefile
+       elif test -f "$srcdir/$cf_dir/programs" ; then
+               $AWK -f $1 "$srcdir/$cf_dir/programs" >>$cf_dir/Makefile
        fi
 done
 
@@ -5905,11 +6888,15 @@ AC_PROG_AWK
 test -z "$AWK" && AC_MSG_ERROR(No awk program found)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PROG_CC version: 4 updated: 2014/07/12 18:57:58
+dnl CF_PROG_CC version: 5 updated: 2019/12/31 08:53:54
 dnl ----------
 dnl standard check for CC, plus followup sanity checks
 dnl $1 = optional parameter to pass to AC_PROG_CC to specify compiler name
 AC_DEFUN([CF_PROG_CC],[
+CF_ACVERSION_CHECK(2.53,
+       [AC_MSG_WARN(this will incorrectly handle gnatgcc choice)
+        AC_REQUIRE([AC_PROG_CC])],
+       [])
 ifelse($1,,[AC_PROG_CC],[AC_PROG_CC($1)])
 CF_GCC_VERSION
 CF_ACVERSION_CHECK(2.52,
@@ -5918,7 +6905,7 @@ CF_ACVERSION_CHECK(2.52,
 CF_CC_ENV_FLAGS
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PROG_CC_C_O version: 5 updated: 2017/01/21 11:06:25
+dnl CF_PROG_CC_C_O version: 6 updated: 2021/01/01 13:31:04
 dnl --------------
 dnl Analogous to AC_PROG_CC_C_O, but more useful: tests only $CC, ensures that
 dnl the output file can be renamed, and allows for a shell variable that can
@@ -5950,45 +6937,50 @@ then
 else
   eval cf_cv_prog_$1_c_o=no
 fi
-rm -rf conftest*
+rm -rf ./conftest*
 ])dnl
-if test $cf_cv_prog_$1_c_o = yes; then
+if test "$cf_cv_prog_$1_c_o" = yes; then
   AC_MSG_RESULT([yes])
 else
   AC_MSG_RESULT([no])
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PROG_EGREP version: 2 updated: 2015/04/18 08:56:57
-dnl -------------
-dnl AC_PROG_EGREP was introduced in autoconf 2.53.
-dnl This macro adds a check to ensure the script found something.
-AC_DEFUN([CF_PROG_EGREP],
-[AC_CACHE_CHECK([for egrep], [ac_cv_prog_egrep],
-       [if echo a | (grep -E '(a|b)') >/dev/null 2>&1
-               then ac_cv_prog_egrep='grep -E'
-               else ac_cv_prog_egrep='egrep'
-       fi])
-       EGREP=$ac_cv_prog_egrep
-       AC_SUBST([EGREP])
-       test -z "$EGREP" && AC_MSG_ERROR(No egrep program found)
-])dnl
-dnl ---------------------------------------------------------------------------
-dnl CF_PROG_GNAT version: 8 updated: 2018/11/10 19:47:04
+dnl CF_PROG_GNAT version: 12 updated: 2021/01/02 17:09:14
 dnl ------------
-dnl Check for gnatmake, ensure that it is complete.
+dnl Check for gnat/gnatmake/etc, ensure that the toolset is complete.
 AC_DEFUN([CF_PROG_GNAT],[
-cf_ada_make=gnatmake
-cf_ada_config="#"
-AC_CHECK_PROG(gnatmake_exists, $cf_ada_make, yes, no)
-if test "$ac_cv_prog_gnatmake_exists" = no; then
+for cf_prog_gnat in gnat gnatmake gprconfig gprbuild
+do
+       CF_UPPER(cf_upper_prog_gnat,${cf_prog_gnat})
+
+       unset ac_cv_path_cf_TEMP_gnat
+       unset cf_TEMP_gnat
+       AC_PATH_PROG(cf_TEMP_gnat,$cf_prog_gnat,no)
+       eval "cf_cv_PATH_$cf_upper_prog_gnat=[$]ac_cv_path_cf_TEMP_gnat"
+
+       if test "x$cf_TEMP_gnat" != xno; then
+               unset cf_cv_gnat_version
+               unset cf_TEMP_gnat
+               CF_GNAT_VERSION(cf_TEMP_gnat,$cf_prog_gnat)
+       fi
+       eval "cf_cv_VERSION_$cf_upper_prog_gnat=[$]cf_TEMP_gnat"
+
+       unset cf_TEMP_gnat
+       unset cf_cv_gnat_version
+       unset ac_cv_path_cf_TEMP_gnat
+done
+
+if test "x$cf_cv_VERSION_GNATMAKE" = "xno"; then
        cf_ada_make=
        cf_cv_prog_gnat_correct=no
 else
-       AC_CHECK_PROG(gprconfig_exists, gprconfig, yes, no)
-       if test "$ac_cv_prog_gprconfig_exists" = yes
-       then
-               rm -rf conftest* *~conftest*
+       cf_ada_make=gnatmake
+       if test "x$cf_cv_VERSION_GPRCONFIG" = "xno"; then
+               # gprconfig is newer than gnatmake; we can continue...
+               cf_ada_config="##"
+       else
+               rm -rf ./conftest* ./*~conftest*
                if mkdir conftest.src
                then
                        cf_ada_config=""
@@ -5996,12 +6988,12 @@ else
                        for cf_gprconfig in Ada C
                        do
                                AC_MSG_CHECKING(for gprconfig name for $cf_gprconfig)
-                               if test $cf_gprconfig = C
+                               if test "$cf_gprconfig" = C
                                then
                                        for cf_gprconfig_param in \
-                                               $cf_gprconfig,,,,GNATGCC \
-                                               $cf_gprconfig,,,,GCC \
-                                               $cf_gprconfig
+                                               "$cf_gprconfig,,,,GNATGCC" \
+                                               "$cf_gprconfig,,,,GCC" \
+                                               "$cf_gprconfig"
                                        do
                                                cf_gprconfig_value=`echo s| gprconfig --config=$cf_gprconfig_param 2>&AC_FD_CC | ${AWK:-awk} '/^\*/{print [$]3;}' | head -n 1`
                                                test -n "$cf_gprconfig_value" && break
@@ -6012,7 +7004,7 @@ else
                                fi
                                if test -n "$cf_gprconfig_value"
                                then
-                                       eval cf_ada_config_[$]cf_gprconfig=[$]cf_gprconfig_value
+                                       eval "cf_ada_config_[$]cf_gprconfig=[$]cf_gprconfig_value"
                                        AC_MSG_RESULT($cf_gprconfig_value)
                                else
                                        AC_MSG_RESULT(missing)
@@ -6021,19 +7013,17 @@ else
                                fi
                        done
                        cd ..
-                       rm -rf conftest* *~conftest*
+                       rm -rf ./conftest* ./*~conftest*
                fi
-       else
-               # gprconfig is newer than gnatmake; we can continue...
-               cf_ada_config="##"
        fi
        if test "x$cf_ada_config" != "x#"
        then
                CF_GNAT_VERSION
+               CF_CHECK_GNAT_VERSION
                AC_CHECK_PROG(M4_exists, m4, yes, no)
                if test "$ac_cv_prog_M4_exists" = no; then
                        cf_cv_prog_gnat_correct=no
-                       echo Ada95 binding required program m4 not found. Ada95 binding disabled.
+                       AC_MSG_WARN(Ada95 binding required program m4 not found. Ada95 binding disabled)
                fi
                if test "$cf_cv_prog_gnat_correct" = yes; then
                        AC_MSG_CHECKING(if GNAT works)
@@ -6045,7 +7035,9 @@ begin
    Text_IO.Put ("Hello World");
    Text_IO.New_Line;
    GNAT.OS_Lib.OS_Exit (0);
-end conftest;],[cf_cv_prog_gnat_correct=yes],[cf_cv_prog_gnat_correct=no])
+end conftest;],
+[cf_cv_prog_gnat_correct=yes],
+[cf_cv_prog_gnat_correct=no])
                        AC_MSG_RESULT($cf_cv_prog_gnat_correct)
                fi
        else
@@ -6059,7 +7051,7 @@ AC_SUBST(cf_ada_config_Ada)
 AC_SUBST(cf_ada_config_C)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PROG_INSTALL version: 7 updated: 2015/04/18 08:56:57
+dnl CF_PROG_INSTALL version: 10 updated: 2021/01/04 19:33:05
 dnl ---------------
 dnl Force $INSTALL to be an absolute-path.  Otherwise, edit_man.sh and the
 dnl misc/tabset install won't work properly.  Usually this happens only when
@@ -6072,7 +7064,7 @@ case $INSTALL in
 (*)
        CF_DIRNAME(cf_dir,$INSTALL)
        test -z "$cf_dir" && cf_dir=.
-       INSTALL=`cd $cf_dir && pwd`/`echo $INSTALL | sed -e 's%^.*/%%'`
+       INSTALL="`cd \"$cf_dir\" && pwd`"/"`echo "$INSTALL" | sed -e 's%^.*/%%'`"
        ;;
 esac
 ])dnl
@@ -6097,12 +7089,18 @@ fi
 AC_SUBST(LDCONFIG)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PROG_LINT version: 3 updated: 2016/05/22 15:25:54
+dnl CF_PROG_LINT version: 5 updated: 2022/08/20 15:44:13
 dnl ------------
 AC_DEFUN([CF_PROG_LINT],
 [
 AC_CHECK_PROGS(LINT, lint cppcheck splint)
+case "x$LINT" in
+(xcppcheck|x*/cppcheck)
+       test -z "$LINT_OPTS" && LINT_OPTS="--enable=all"
+       ;;
+esac
 AC_SUBST(LINT_OPTS)
+AC_SUBST(LINT_LIBS)
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_PROG_LN_S version: 2 updated: 2010/08/14 18:25:37
@@ -6127,7 +7125,7 @@ AC_MSG_RESULT($cf_prog_ln_sf)
 test "$cf_prog_ln_sf" = yes && LN_S="$LN_S -f"
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_REGEX version: 12 updated: 2015/04/18 08:56:57
+dnl CF_REGEX version: 18 updated: 2021/01/01 16:53:59
 dnl --------
 dnl Attempt to determine if we've got one of the flavors of regular-expression
 dnl code that we can support.
@@ -6135,24 +7133,36 @@ AC_DEFUN([CF_REGEX],
 [
 
 cf_regex_func=no
-
-cf_regex_libs="regex re"
-case $host_os in
+cf_regex_libs=
+case "$host_os" in
 (mingw*)
-       cf_regex_libs="gnurx $cf_regex_libs"
+       # -lsystre -ltre -lintl -liconv
+       AC_CHECK_LIB(systre,regcomp,[
+               AC_CHECK_LIB(iconv,libiconv_open,[CF_ADD_LIB(iconv)])
+               AC_CHECK_LIB(intl,libintl_gettext,[CF_ADD_LIB(intl)])
+               AC_CHECK_LIB(tre,tre_regcomp,[CF_ADD_LIB(tre)])
+               CF_ADD_LIB(systre)
+               cf_regex_func=regcomp
+       ],[
+               AC_CHECK_LIB(gnurx,regcomp,[
+                       CF_ADD_LIB(gnurx)
+                       cf_regex_func=regcomp])
+       ])
+       ;;
+(*)
+       cf_regex_libs="regex re"
+       AC_CHECK_FUNC(regcomp,[cf_regex_func=regcomp],[
+               for cf_regex_lib in $cf_regex_libs
+               do
+                       AC_CHECK_LIB($cf_regex_lib,regcomp,[
+                                       CF_ADD_LIB($cf_regex_lib)
+                                       cf_regex_func=regcomp
+                                       break])
+               done
+       ])
        ;;
 esac
 
-AC_CHECK_FUNC(regcomp,[cf_regex_func=regcomp],[
-       for cf_regex_lib in $cf_regex_libs
-       do
-               AC_CHECK_LIB($cf_regex_lib,regcomp,[
-                               CF_ADD_LIB($cf_regex_lib)
-                               cf_regex_func=regcomp
-                               break])
-       done
-])
-
 if test "$cf_regex_func" = no ; then
        AC_CHECK_FUNC(compile,[cf_regex_func=compile],[
                AC_CHECK_LIB(gen,compile,[
@@ -6167,13 +7177,15 @@ fi
 AC_CACHE_CHECK(for regular-expression headers,cf_cv_regex_hdrs,[
 
 cf_cv_regex_hdrs=no
-case $cf_regex_func in
+case "$cf_regex_func" in
 (compile)
        for cf_regex_hdr in regexp.h regexpr.h
        do
                AC_TRY_LINK([#include <$cf_regex_hdr>],[
                        char *p = compile("", "", "", 0);
                        int x = step("", "");
+                       (void)p;
+                       (void)x;
                ],[
                        cf_cv_regex_hdrs=$cf_regex_hdr
                        break
@@ -6185,9 +7197,11 @@ case $cf_regex_func in
        do
                AC_TRY_LINK([#include <sys/types.h>
 #include <$cf_regex_hdr>],[
-                       regex_t *p;
+                       regex_t *p = 0;
                        int x = regcomp(p, "", 0);
                        int y = regexec(p, "", 0, 0, 0);
+                       (void)x;
+                       (void)y;
                        regfree(p);
                ],[
                        cf_cv_regex_hdrs=$cf_regex_hdr
@@ -6199,7 +7213,7 @@ esac
 
 ])
 
-case $cf_cv_regex_hdrs in
+case "$cf_cv_regex_hdrs" in
        (no)            AC_MSG_WARN(no regular expression header found) ;;
        (regex.h)       AC_DEFINE(HAVE_REGEX_H_FUNCS,1,[Define to 1 to include regex.h for regular expressions]) ;;
        (regexp.h)      AC_DEFINE(HAVE_REGEXP_H_FUNCS,1,[Define to 1 to include regexp.h for regular expressions]) ;;
@@ -6207,6 +7221,24 @@ case $cf_cv_regex_hdrs in
 esac
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_REMOVE_CFLAGS version: 3 updated: 2021/09/05 17:25:40
+dnl ----------------
+dnl Remove a given option from CFLAGS/CPPFLAGS
+dnl $1 = option to remove
+dnl $2 = variable to update
+dnl $3 = nonempty to allow verbose message
+define([CF_REMOVE_CFLAGS],
+[
+cf_tmp_cflag=`echo "x$1" | sed -e 's/^.//' -e 's/=.*//'`
+while true
+do
+       cf_old_cflag=`echo "x[$]$2" | sed -e 's/^.//' -e 's/[[  ]][[    ]]*-/ -/g' -e "s%$cf_tmp_cflag\\(=[[^   ]][[^   ]]*\\)\?%%" -e 's/^[[   ]]*//' -e 's%[[ ]][[ ]]*-D% -D%g' -e 's%[[ ]][[ ]]*-I% -I%g'`
+       test "[$]$2" != "$cf_old_cflag" || break
+       ifelse([$3],,,[CF_VERBOSE(removing old option $1 from $2)])
+       $2="$cf_old_cflag"
+done
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_REMOVE_DEFINE version: 3 updated: 2010/01/09 11:05:50
 dnl ----------------
 dnl Remove all -U and -D options that refer to the given symbol from a list
@@ -6237,11 +7269,23 @@ define([CF_REMOVE_LIB],
 $1=`echo "$2" | sed -e 's/-l$3[[       ]]//g' -e 's/-l$3[$]//'`
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_RPATH_HACK version: 11 updated: 2013/09/01 13:02:00
+dnl CF_RESTORE_XTRA_FLAGS version: 1 updated: 2020/01/11 16:47:45
+dnl ---------------------
+dnl Restore flags saved in CF_SAVE_XTRA_FLAGS
+dnl $1 = name of current macro
+define([CF_RESTORE_XTRA_FLAGS],
+[
+LIBS="$cf_save_LIBS_$1"
+CFLAGS="$cf_save_CFLAGS_$1"
+CPPFLAGS="$cf_save_CPPFLAGS_$1"
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_RPATH_HACK version: 13 updated: 2021/01/03 18:30:50
 dnl -------------
 AC_DEFUN([CF_RPATH_HACK],
-[
-AC_REQUIRE([CF_LD_RPATH_OPT])
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+AC_REQUIRE([CF_LD_RPATH_OPT])dnl
+
 AC_MSG_CHECKING(for updated LDFLAGS)
 if test -n "$LD_RPATH_OPT" ; then
        AC_MSG_RESULT(maybe)
@@ -6254,8 +7298,8 @@ if test -n "$LD_RPATH_OPT" ; then
 
 AC_TRY_LINK([#include <stdio.h>],
                [printf("Hello");],
-               [cf_rpath_oops=`$cf_ldd_prog conftest$ac_exeext | fgrep ' not found' | sed -e 's% =>.*$%%' |sort | uniq`
-                cf_rpath_list=`$cf_ldd_prog conftest$ac_exeext | fgrep / | sed -e 's%^.*[[     ]]/%/%' -e 's%/[[^/]][[^/]]*$%%' |sort | uniq`])
+               [cf_rpath_oops=`"$cf_ldd_prog" "conftest$ac_exeext" | ${FGREP-fgrep} ' not found' | sed -e 's% =>.*$%%' |sort | uniq`
+                cf_rpath_list=`"$cf_ldd_prog" "conftest$ac_exeext" | ${FGREP-fgrep} / | sed -e 's%^.*[[        ]]/%/%' -e 's%/[[^/]][[^/]]*$%%' |sort | uniq`])
 
                # If we passed the link-test, but get a "not found" on a given library,
                # this could be due to inept reconfiguration of gcc to make it only
@@ -6271,7 +7315,7 @@ AC_TRY_LINK([#include <stdio.h>],
                                        /usr/pkg \
                                        /opt/sfw
                                do
-                                       if test -f $cf_rpath_dir/lib/$cf_rpath_src
+                                       if test -f "$cf_rpath_dir/lib/$cf_rpath_src"
                                        then
                                                CF_VERBOSE(...adding -L$cf_rpath_dir/lib to LDFLAGS for $cf_rpath_src)
                                                LDFLAGS="$LDFLAGS -L$cf_rpath_dir/lib"
@@ -6294,7 +7338,7 @@ fi
 AC_SUBST(EXTRA_LDFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_RPATH_HACK_2 version: 7 updated: 2015/04/12 15:39:00
+dnl CF_RPATH_HACK_2 version: 8 updated: 2021/01/01 13:31:04
 dnl ---------------
 dnl Do one set of substitutions for CF_RPATH_HACK, adding an rpath option to
 dnl EXTRA_LDFLAGS for each -L option found.
@@ -6310,7 +7354,7 @@ CF_VERBOSE(...checking $1 [$]$1)
 cf_rpath_dst=
 for cf_rpath_src in [$]$1
 do
-       case $cf_rpath_src in
+       case "$cf_rpath_src" in
        (-L*)
 
                # check if this refers to a directory which we will ignore
@@ -6354,7 +7398,32 @@ CF_VERBOSE(...checked $1 [$]$1)
 AC_SUBST(EXTRA_LDFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SHARED_OPTS version: 93 updated: 2018/08/18 16:36:35
+dnl CF_SAVE_XTRA_FLAGS version: 1 updated: 2020/01/11 16:46:44
+dnl ------------------
+dnl Use this macro to save CFLAGS/CPPFLAGS/LIBS before checks against X headers
+dnl and libraries which do not update those variables.
+dnl
+dnl $1 = name of current macro
+define([CF_SAVE_XTRA_FLAGS],
+[
+cf_save_LIBS_$1="$LIBS"
+cf_save_CFLAGS_$1="$CFLAGS"
+cf_save_CPPFLAGS_$1="$CPPFLAGS"
+LIBS="$LIBS ${X_PRE_LIBS} ${X_LIBS} ${X_EXTRA_LIBS}"
+for cf_X_CFLAGS in $X_CFLAGS
+do
+       case "x$cf_X_CFLAGS" in
+       x-[[IUD]]*)
+               CPPFLAGS="$CPPFLAGS $cf_X_CFLAGS"
+               ;;
+       *)
+               CFLAGS="$CFLAGS $cf_X_CFLAGS"
+               ;;
+       esac
+done
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_SHARED_OPTS version: 111 updated: 2024/03/29 20:08:49
 dnl --------------
 dnl --------------
 dnl Attempt to determine the appropriate CC/LD options for creating a shared
@@ -6378,7 +7447,7 @@ dnl The variable 'cf_cv_shlib_version_infix' controls whether shared library
 dnl version numbers are infix (ex: libncurses.<ver>.dylib) or postfix
 dnl (ex: libncurses.so.<ver>).
 dnl
-dnl Some loaders leave 'so_locations' lying around.  It's nice to clean up.
+dnl Some loaders leave 'so_locations' lying around.  It is nice to clean up.
 AC_DEFUN([CF_SHARED_OPTS],
 [
        AC_REQUIRE([CF_LD_RPATH_OPT])
@@ -6400,11 +7469,11 @@ AC_DEFUN([CF_SHARED_OPTS],
        cf_ld_rpath_opt=
        test "$cf_cv_enable_rpath" = yes && cf_ld_rpath_opt="$LD_RPATH_OPT"
 
-       AC_MSG_CHECKING(if release/abi version should be used for shared libs)
+       AC_MSG_CHECKING(whether to use release or ABI version in shared library file names)
        AC_ARG_WITH(shlib-version,
-       [  --with-shlib-version=X  Specify rel or abi version for shared libs],
+       [[  --with-shlib-version[={rel|abi}] use release or ABI version in shared library file names]],
        [test -z "$withval" && withval=auto
-       case $withval in
+       case "$withval" in
        (yes)
                cf_cv_shlib_version=auto
                ;;
@@ -6430,7 +7499,7 @@ AC_DEFUN([CF_SHARED_OPTS],
        then
                cf_try_fPIC=yes
        else
-               case $cf_cv_system_name in
+               case "$cf_cv_system_name" in
                (*linux*)       # e.g., PGI compiler
                        cf_try_fPIC=yes
                        ;;
@@ -6444,7 +7513,7 @@ AC_DEFUN([CF_SHARED_OPTS],
                for CC_SHARED_OPTS in -fPIC -fpic ''
                do
                        CFLAGS="$cf_save_CFLAGS $CC_SHARED_OPTS"
-                       AC_TRY_COMPILE([#include <stdio.h>],[int x = 1],[break],[])
+                       AC_TRY_COMPILE([#include <stdio.h>],[int x = 1; (void)x],[break],[])
                done
                AC_MSG_RESULT($CC_SHARED_OPTS)
                CFLAGS="$cf_save_CFLAGS"
@@ -6452,7 +7521,7 @@ AC_DEFUN([CF_SHARED_OPTS],
 
        cf_cv_shlib_version_infix=no
 
-       case $cf_cv_system_name in
+       case "$cf_cv_system_name" in
        (aix4.[3-9]*|aix[[5-7]]*)
                if test "$GCC" = yes; then
                        CC_SHARED_OPTS='-Wl,-brtl'
@@ -6521,10 +7590,14 @@ CF_EOF
                        LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
                        AC_TRY_LINK(, [int i;], cf_cv_ldflags_search_paths_first=yes, cf_cv_ldflags_search_paths_first=no)
                                LDFLAGS=$cf_save_LDFLAGS])
-               if test $cf_cv_ldflags_search_paths_first = yes; then
+               if test "$cf_cv_ldflags_search_paths_first" = yes; then
                        LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
                fi
                ;;
+       (haiku*)
+               CF_SHARED_SONAME
+               MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname',-stats,-lc -o $[@]'
+               ;;
        (hpux[[7-8]]*)
                # HP-UX 8.07 ld lacks "+b" option used for libdir search-list
                if test "$GCC" != yes; then
@@ -6580,6 +7653,112 @@ CF_EOF
                CF_SHARED_SONAME
                MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname',-stats,-lc -o $[@]'
                ;;
+       (mingw*msvc*)
+               cf_cv_shlib_version=msvcdll
+               cf_cv_shlib_version_infix=msvcdll
+               shlibdir=$bindir
+               MAKE_DLLS=
+               if test "$DFT_LWR_MODEL" = "shared" ; then
+                       LOCAL_LDFLAGS="-link -dll"
+                       LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
+                       EXTRA_LDFLAGS="-link -dll $EXTRA_LDFLAGS"
+               fi
+               CC_SHARED_OPTS=
+               MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ ${LD} [$]{CFLAGS}'
+               RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.lib"
+               cat >mk_shared_lib.sh <<-CF_EOF
+               #!$SHELL
+               SHARED_LIB=\[$]1
+               IMPORT_LIB=\`echo "\[$]1" | sed -e 's/[[0-9]]*\.dll[$]/.dll.lib/'\`
+               shift
+               my_ld=\[$]1
+               shift
+               cat <<-EOF
+               Linking shared library
+               ** SHARED LIB \$SHARED_LIB
+               ** IMPORT_LIB \$IMPORT_LIB
+EOF
+               args=\$(echo \[$]* | sed -E "s#-l(\w*)#\1.dll.lib#g" | sed -E "s#-L(\w*)#-LIBPATH:\1#g")
+               exec \$my_ld -DLL -IMPLIB:"\${IMPORT_LIB}" -OUT:"\${SHARED_LIB}" ${LDFLAGS} \$args
+               mv "\${IMPORT_LIB}" "\${IMPORT_LIB}"
+CF_EOF
+               chmod +x mk_shared_lib.sh
+               cat >mk_prog.sh <<-CF_EOF
+               #!$SHELL
+               shift
+               # Ignore first argument (compiler) and use LD (link.exe) unconditionally
+               LD="[$]LD"
+               clopts=()
+               ldopts=("/subsystem:console")
+               libs=()
+               isdll=0
+               while test \[$]# -gt 0; do
+                       case "\[$]1" in
+                               -link)
+                                       # ignore -link argument
+                                       ;;
+                               -M[[TD]] | -M[[TD]]d)
+                                       # ignore runtime-library option
+                                       ;;
+                               -dll)
+                                       isdll=1
+                                       ;;
+                               -W* | -w*)
+                                       # ignore warnings
+                                       ;;
+                               -D*)
+                                       clopts+=("\[$]1")
+                                       ;;
+                               -I*)
+                                       clopts+=("\[$]1")
+                                       ;;
+                               -l*)
+                                       libs+=("\`echo \"\[$]1\" | sed \"s/^-l//\"\`")
+                                       ;;
+                               -L*)
+                                       ldopts+=("\`echo \"\[$]1\" | sed \"s/^-L/-LIBPATH:/\"\`")
+                                       ;;
+                               *.obj | *.o)
+                                       ldopts+=("\[$]1")
+                                       ;;
+                               -Wl,*)
+                                       for linkarg in \`echo '\[$]1' | sed -e 's/-Wl,//' -e 's/,/ /'\`; do
+                                               ldopts+=("\[$]{linkarg}")
+                                       done
+                                       ;;
+                               *.lib)
+                                       ldopts+=("\[$]1")
+                                       ;;
+                               -o)
+                                       shift
+                                       ldopts+=("-out:\[$]1")
+                                       ;;
+                               *)
+                                       clopts+=("\[$]1")
+                                       ldopts+=("\[$]1")
+                                       ;;
+                       esac
+                       shift
+               done
+               if [[ "\$isdll" -ne 0 ]]; then
+                       for lib in \[$]{libs[[*]]}; do
+                               ldopts+=("\[$]lib.dll.lib")
+                       done
+               else
+                       for lib in \[$]{libs[[*]]}; do
+                               ldopts+=("\[$]lib.lib")
+                       done
+               fi
+               cat <<-EOF
+               Creating program
+               ** ld options:   "\[$]{ldopts[[@]]}"
+EOF
+               exec \[$]LD \[$]{ldopts[[@]]}
+CF_EOF
+               chmod +x mk_prog.sh
+               LINK_PROGS="$SHELL ${rel_builddir}/mk_prog.sh"
+               LINK_TESTS="$SHELL ${rel_builddir}/mk_prog.sh"
+               ;;
        (mingw*)
                cf_cv_shlib_version=mingw
                cf_cv_shlib_version_infix=mingw
@@ -6619,6 +7798,14 @@ CF_EOF
                CF_SHARED_SONAME
                MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-Bshareable,-soname,'$cf_cv_shared_soname',-stats,-lc -o $[@]'
                ;;
+       (nskJ*)
+               CC_SHARED_OPTS=
+               MK_SHARED_LIB='${LD} -Wshared -Weld=-export_all -o $[@]'
+               ;;
+       (nskL*)
+               CC_SHARED_OPTS=
+               MK_SHARED_LIB='${LD} -Wshared -Wxld=-export_all -o $[@]'
+               ;;
        (nto-qnx*|openbsd*|freebsd[[12]].*)
                CC_SHARED_OPTS="$CC_SHARED_OPTS -DPIC"
                MK_SHARED_LIB='${LD} ${LDFLAGS} -Bshareable -o $[@]'
@@ -6650,7 +7837,7 @@ CF_EOF
                        CF_SHARED_SONAME
                        MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname' -o $[@]'
                else
-                       MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -Wl,-shared -Wl,-Bshareable -o $[@]'
+                       MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -o $[@]'
                fi
                ;;
        (osf*|mls+*)
@@ -6658,7 +7845,7 @@ CF_EOF
                # tested with OSF/1 V3.2 and gcc 2.6.3 (but the c++ demo didn't
                # link with shared libs).
                MK_SHARED_LIB='${LD} ${LDFLAGS} -set_version ${REL_VERSION}:${ABI_VERSION} -expect_unresolved "*" -shared -soname `basename $[@]`'
-               case $host_os in
+               case "$host_os" in
                (osf4*)
                        MK_SHARED_LIB="${MK_SHARED_LIB} -msym"
                        ;;
@@ -6696,11 +7883,11 @@ CF_EOF
                # tested with SunOS 5.5.1 (solaris 2.5.1) and gcc 2.7.2
                # tested with SunOS 5.10 (solaris 10) and gcc 3.4.3
                if test "$DFT_LWR_MODEL" = "shared" ; then
-                       LOCAL_LDFLAGS="-R \$(LOCAL_LIBDIR):\${libdir}"
+                       LOCAL_LDFLAGS="-R\$(LOCAL_LIBDIR):\${libdir}"
                        LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
                fi
                if test "$cf_cv_enable_rpath" = yes ; then
-                       EXTRA_LDFLAGS="-R \${libdir} $EXTRA_LDFLAGS"
+                       EXTRA_LDFLAGS="-R\${libdir} $EXTRA_LDFLAGS"
                fi
                CF_SHARED_SONAME
                if test "$GCC" != yes; then
@@ -6708,13 +7895,13 @@ CF_EOF
                        for cf_shared_opts in -xcode=pic32 -xcode=pic13 -KPIC -Kpic -O
                        do
                                CFLAGS="$cf_shared_opts $cf_save_CFLAGS"
-                               AC_TRY_COMPILE([#include <stdio.h>],[printf("Hello\n");],[break])
+                               AC_TRY_COMPILE([#include <stdio.h>],[printf("Hello\\n");],[break])
                        done
                        CFLAGS="$cf_save_CFLAGS"
                        CC_SHARED_OPTS=$cf_shared_opts
-                       MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -dy -G -'$cf_cv_shared_soname' -o $[@]'
+                       MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -dy -G -Wl,-h,'$cf_cv_shared_soname' -o $[@]'
                else
-                       MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -dy -G -'$cf_cv_shared_soname' -o $[@]'
+                       MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -dy -G -Wl,-h,'$cf_cv_shared_soname' -o $[@]'
                fi
                ;;
        (sysv5uw7*|unix_sv*)
@@ -6751,7 +7938,7 @@ cat > conftest.$ac_ext <<EOF
 #include <stdio.h>
 int main(int argc, char *argv[[]])
 {
-       printf("hello\n");
+       printf("hello\\n");
        return (argv[[argc-1]] == 0) ;
 }
 EOF
@@ -6775,7 +7962,7 @@ EOF
        test -n "$cf_ld_rpath_opt" && MK_SHARED_LIB="$MK_SHARED_LIB $cf_ld_rpath_opt\${RPATH_LIST}"
        test -z "$RPATH_LIST" && RPATH_LIST="\${libdir}"
 
-       test $cf_cv_rm_so_locs = yes && RM_SHARED_OPTS="$RM_SHARED_OPTS so_locations"
+       test "$cf_cv_rm_so_locs" = yes && RM_SHARED_OPTS="$RM_SHARED_OPTS so_locations"
 
        CF_VERBOSE(CC_SHARED_OPTS: $CC_SHARED_OPTS)
        CF_VERBOSE(MK_SHARED_LIB:  $MK_SHARED_LIB)
@@ -6815,7 +8002,7 @@ define([CF_SHARED_SONAME],
        fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_SIGWINCH version: 2 updated: 2019/03/23 19:54:44
+dnl CF_SIGWINCH version: 7 updated: 2023/02/18 17:41:25
 dnl -----------
 dnl Use this macro after CF_XOPEN_SOURCE, but do not require it (not all
 dnl programs need this test).
@@ -6830,7 +8017,7 @@ AC_CACHE_CHECK(if SIGWINCH is defined,cf_cv_define_sigwinch,[
        AC_TRY_COMPILE([
 #include <sys/types.h>
 #include <sys/signal.h>
-],[int x = SIGWINCH],
+],[int x = SIGWINCH; (void)x],
        [cf_cv_define_sigwinch=yes],
        [AC_TRY_COMPILE([
 #undef _XOPEN_SOURCE
@@ -6838,7 +8025,7 @@ AC_CACHE_CHECK(if SIGWINCH is defined,cf_cv_define_sigwinch,[
 #undef _POSIX_C_SOURCE
 #include <sys/types.h>
 #include <sys/signal.h>
-],[int x = SIGWINCH],
+],[int x = SIGWINCH; (void)x],
        [cf_cv_define_sigwinch=maybe],
        [cf_cv_define_sigwinch=no])
 ])
@@ -6848,7 +8035,7 @@ if test "$cf_cv_define_sigwinch" = maybe ; then
 AC_CACHE_CHECK(for actual SIGWINCH definition,cf_cv_fixup_sigwinch,[
 cf_cv_fixup_sigwinch=unknown
 cf_sigwinch=32
-while test $cf_sigwinch != 1
+while test "$cf_sigwinch" != 1
 do
        AC_TRY_COMPILE([
 #undef _XOPEN_SOURCE
@@ -6858,13 +8045,13 @@ do
 #include <sys/signal.h>
 ],[
 #if SIGWINCH != $cf_sigwinch
-make an error
+#error SIGWINCH is not $cf_sigwinch
 #endif
-int x = SIGWINCH],
+int x = SIGWINCH; (void)x],
        [cf_cv_fixup_sigwinch=$cf_sigwinch
         break])
 
-cf_sigwinch=`expr $cf_sigwinch - 1`
+cf_sigwinch="`expr "$cf_sigwinch" - 1`"
 done
 ])
 
@@ -6874,9 +8061,9 @@ done
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SIG_ATOMIC_T version: 3 updated: 2012/10/04 20:12:20
+dnl CF_SIG_ATOMIC_T version: 5 updated: 2020/03/10 18:53:47
 dnl ---------------
-dnl signal handler, but there are some gcc depedencies in that recommendation.
+dnl signal handler, but there are some gcc dependencies in that recommendation.
 dnl Try anyway.
 AC_DEFUN([CF_SIG_ATOMIC_T],
 [
@@ -6896,6 +8083,7 @@ extern $cf_type x;
 $cf_type x;
 static void handler(int sig)
 {
+       (void)sig;
        x = 5;
 }],
                [signal(SIGINT, handler);
@@ -6909,7 +8097,7 @@ AC_MSG_RESULT($cf_cv_sig_atomic_t)
 test "$cf_cv_sig_atomic_t" != no && AC_DEFINE_UNQUOTED(SIG_ATOMIC_T, $cf_cv_sig_atomic_t,[Define to signal global datatype])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SIZECHANGE version: 14 updated: 2018/06/20 20:23:13
+dnl CF_SIZECHANGE version: 18 updated: 2021/09/04 06:35:04
 dnl -------------
 dnl Check for definitions & structures needed for window size-changing
 dnl
@@ -6940,7 +8128,7 @@ do
 
 #ifdef NEED_PTEM_H
 /* This is a workaround for SCO:  they neglected to define struct winsize in
- * termios.h -- it's only in termio.h and ptem.h
+ * termios.h -- it is only in termio.h and ptem.h
  */
 #include <sys/stream.h>
 #include <sys/ptem.h>
@@ -6952,13 +8140,17 @@ do
 ],[
 #ifdef TIOCGSIZE
        struct ttysize win;     /* SunOS 3.0... */
-       int y = win.ts_lines;
-       int x = win.ts_cols;
+       int y = win.ts_lines = 2;
+       int x = win.ts_cols = 1;
+       (void)y;
+       (void)x;
 #else
 #ifdef TIOCGWINSZ
        struct winsize win;     /* everything else */
-       int y = win.ws_row;
-       int x = win.ws_col;
+       int y = win.ws_row = 2;
+       int x = win.ws_col = 1;
+       (void)y;
+       (void)x;
 #else
        no TIOCGSIZE or TIOCGWINSZ
 #endif /* TIOCGWINSZ */
@@ -6977,7 +8169,7 @@ done
 ])
 if test "$cf_cv_sizechange" != no ; then
        AC_DEFINE(HAVE_SIZECHANGE,1,[Define to 1 if sizechange declarations are provided])
-       case $cf_cv_sizechange in
+       case "$cf_cv_sizechange" in
        (NEED*)
                AC_DEFINE_UNQUOTED($cf_cv_sizechange )
                ;;
@@ -6985,7 +8177,7 @@ if test "$cf_cv_sizechange" != no ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SRC_MODULES version: 30 updated: 2017/07/26 17:08:35
+dnl CF_SRC_MODULES version: 34 updated: 2023/04/22 11:51:06
 dnl --------------
 dnl For each parameter, test if the source-directory exists, and if it contains
 dnl a 'modules' file.  If so, add to the list $cf_cv_src_modules which we'll
@@ -6995,6 +8187,7 @@ dnl This uses the configured value to make the lists SRC_SUBDIRS and
 dnl SUB_MAKEFILES which are used in the makefile-generation scheme.
 AC_DEFUN([CF_SRC_MODULES],
 [
+AC_REQUIRE([CF_CHECK_GNAT_VERSION])
 AC_MSG_CHECKING(for src modules)
 
 # dependencies and linker-arguments for test-programs
@@ -7012,15 +8205,7 @@ PC_MODULES_TO_MAKE="ncurses${USE_ARG_SUFFIX}"
 cf_cv_src_modules=
 for cf_dir in $1
 do
-       if test -f $srcdir/$cf_dir/modules; then
-
-               # We may/may not have tack in the distribution, though the
-               # makefile is.
-               if test $cf_dir = tack ; then
-                       if test "x$cf_with_tack" != "xyes"; then
-                               continue
-                       fi
-               fi
+       if test -f "$srcdir/$cf_dir/modules" ; then
 
                if test -z "$cf_cv_src_modules"; then
                        cf_cv_src_modules=$cf_dir
@@ -7032,20 +8217,19 @@ do
                # well.  These are header files that are the same name as their
                # directory.  Ncurses is the only library that does not follow
                # that pattern.
-               if test $cf_dir = tack ; then
-                       continue
-               elif test -f $srcdir/${cf_dir}/${cf_dir}.h; then
+               if test -f "$srcdir/${cf_dir}/${cf_dir}.h" ; then
                        CF_UPPER(cf_have_include,$cf_dir)
                        AC_DEFINE_UNQUOTED(HAVE_${cf_have_include}_H)
                        AC_DEFINE_UNQUOTED(HAVE_LIB${cf_have_include})
-                       TEST_DEPS="${LIB_DIR}/${LIB_PREFIX}${cf_dir}${DFT_DEP_SUFFIX} $TEST_DEPS"
-                       TEST_DEP2="${LIB_2ND}/${LIB_PREFIX}${cf_dir}${DFT_DEP_SUFFIX} $TEST_DEP2"
+                       CF_MAP_LIB_BASENAME(TEST_ROOT,$cf_dir)
+                       TEST_DEPS="${LIB_DIR}/${LIB_PREFIX}${TEST_ROOT}${DFT_DEP_SUFFIX} $TEST_DEPS"
+                       TEST_DEP2="${LIB_2ND}/${LIB_PREFIX}${TEST_ROOT}${DFT_DEP_SUFFIX} $TEST_DEP2"
                        if test "$DFT_LWR_MODEL" = "libtool"; then
                                TEST_ARGS="${TEST_DEPS}"
                                TEST_ARG2="${TEST_DEP2}"
                        else
-                               TEST_ARGS="-l${cf_dir}${USE_ARG_SUFFIX} $TEST_ARGS"
-                               TEST_ARG2="-l${cf_dir}${USE_ARG_SUFFIX} $TEST_ARG2"
+                               TEST_ARGS="-l${TEST_ROOT}${USE_ARG_SUFFIX} $TEST_ARGS"
+                               TEST_ARG2="-l${TEST_ROOT}${USE_ARG_SUFFIX} $TEST_ARG2"
                        fi
                        PC_MODULES_TO_MAKE="${PC_MODULES_TO_MAKE} ${cf_dir}${USE_ARG_SUFFIX}"
                fi
@@ -7087,7 +8271,7 @@ test "x$with_ticlib" != xno && PC_MODULES_TO_MAKE="$PC_MODULES_TO_MAKE $TICS_ARG
 AC_SUBST(PC_MODULES_TO_MAKE)
 
 ADA_SUBDIRS=
-if test "x$cf_with_ada" = "xyes" && test "x$cf_cv_prog_gnat_correct" = xyes && test -f $srcdir/Ada95/Makefile.in; then
+if test "x$cf_with_ada" = "xyes" && test "x$cf_cv_prog_gnat_correct" = xyes && test -f "$srcdir/Ada95/Makefile.in" ; then
        SRC_SUBDIRS="$SRC_SUBDIRS Ada95"
        ADA_SUBDIRS="gen src"
        if test "x$cf_with_tests" != "xno" ; then
@@ -7110,7 +8294,7 @@ if test -n "$ADA_SUBDIRS"; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_STDCPP_LIBRARY version: 11 updated: 2015/10/17 19:03:33
+dnl CF_STDCPP_LIBRARY version: 12 updated: 2021/01/01 13:31:04
 dnl -----------------
 dnl Check for -lstdc++, which is GNU's standard C++ library.
 dnl If $CXXLIBS is set, add that to the libraries used for test-linking.
@@ -7131,9 +8315,9 @@ if test -n "$GXX" ; then
        AC_MSG_RESULT($cf_have_libstdcpp)
        LIBS="$cf_save"
 
-       if test $cf_have_libstdcpp != yes
+       if test "$cf_have_libstdcpp" != yes
        then
-               case $cf_cv_system_name in
+               case "$cf_cv_system_name" in
                (os2*)
                        if test -z "`g++ -dM -E - < /dev/null | grep __KLIBC__`"; then
                                cf_stdcpp_libname=stdcpp
@@ -7162,13 +8346,13 @@ if test -n "$GXX" ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_STRIP_G_OPT version: 3 updated: 2002/12/21 19:25:52
+dnl CF_STRIP_G_OPT version: 4 updated: 2021/01/02 09:31:20
 dnl --------------
 dnl    Remove "-g" option from the compiler options
 AC_DEFUN([CF_STRIP_G_OPT],
-[$1=`echo ${$1} | sed -e 's%-g %%' -e 's%-g$%%'`])dnl
+[$1=`echo "${$1}" | CF__SED_TRIMBLANKS(-e 's%-g %%' -e 's%-g$%%')`])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_STRUCT_SIGACTION version: 5 updated: 2012/10/06 17:56:13
+dnl CF_STRUCT_SIGACTION version: 6 updated: 2023/12/03 09:21:34
 dnl -------------------
 dnl Check if we need _POSIX_SOURCE defined to use struct sigaction.  We'll only
 dnl do this if we've found the sigaction function.
@@ -7180,14 +8364,14 @@ AC_MSG_CHECKING(whether sigaction needs _POSIX_SOURCE)
 AC_TRY_COMPILE([
 #include <sys/types.h>
 #include <signal.h>],
-       [struct sigaction act],
+       [struct sigaction act; (void)act],
        [sigact_bad=no],
        [
 AC_TRY_COMPILE([
 #define _POSIX_SOURCE
 #include <sys/types.h>
 #include <signal.h>],
-       [struct sigaction act],
+       [struct sigaction act; (void)act],
        [sigact_bad=yes
         AC_DEFINE(_POSIX_SOURCE,1,[Define to 1 if we must define _POSIX_SOURCE])],
         [sigact_bad=unknown])])
@@ -7195,7 +8379,7 @@ AC_MSG_RESULT($sigact_bad)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_STRUCT_TERMIOS version: 9 updated: 2018/06/08 21:57:23
+dnl CF_STRUCT_TERMIOS version: 13 updated: 2023/12/03 19:38:54
 dnl -----------------
 dnl Some machines require _POSIX_SOURCE to completely define struct termios.
 AC_DEFUN([CF_STRUCT_TERMIOS],[
@@ -7218,12 +8402,12 @@ if test "$ac_cv_header_termios_h" = yes ; then
        if test "$termios_bad" = maybe ; then
        AC_MSG_CHECKING(whether termios.h needs _POSIX_SOURCE)
        AC_TRY_COMPILE([#include <termios.h>],
-               [struct termios foo; int x = foo.c_iflag],
+               [struct termios foo; int x = (int)(foo.c_iflag = 1); (void)x],
                termios_bad=no, [
                AC_TRY_COMPILE([
 #define _POSIX_SOURCE
 #include <termios.h>],
-                       [struct termios foo; int x = foo.c_iflag],
+                       [struct termios foo; int x = (int)(foo.c_iflag = 2); (void)x],
                        termios_bad=unknown,
                        termios_bad=yes AC_DEFINE(_POSIX_SOURCE,1,[Define to 1 if we must define _POSIX_SOURCE]))
                        ])
@@ -7275,20 +8459,21 @@ fi
 AC_SUBST($2)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SUBST_NCURSES_VERSION version: 8 updated: 2006/09/16 11:40:59
+dnl CF_SUBST_NCURSES_VERSION version: 11 updated: 2023/01/07 16:32:06
 dnl ------------------------
 dnl Get the version-number for use in shared-library naming, etc.
 AC_DEFUN([CF_SUBST_NCURSES_VERSION],
-[
-AC_REQUIRE([CF_PROG_EGREP])
-NCURSES_MAJOR="`$ac_cv_prog_egrep '^NCURSES_MAJOR[[    ]]*=' $srcdir/dist.mk | sed -e 's/^[[^0-9]]*//'`"
-NCURSES_MINOR="`$ac_cv_prog_egrep '^NCURSES_MINOR[[    ]]*=' $srcdir/dist.mk | sed -e 's/^[[^0-9]]*//'`"
-NCURSES_PATCH="`$ac_cv_prog_egrep '^NCURSES_PATCH[[    ]]*=' $srcdir/dist.mk | sed -e 's/^[[^0-9]]*//'`"
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+
+NCURSES_MAJOR="`${EGREP-egrep} '^NCURSES_MAJOR[[       ]]*=' "$srcdir/dist.mk" | sed -e 's/^[[^0-9]]*//'`"
+NCURSES_MINOR="`${EGREP-egrep} '^NCURSES_MINOR[[       ]]*=' "$srcdir/dist.mk" | sed -e 's/^[[^0-9]]*//'`"
+NCURSES_PATCH="`${EGREP-egrep} '^NCURSES_PATCH[[       ]]*=' "$srcdir/dist.mk" | sed -e 's/^[[^0-9]]*//'`"
 cf_cv_abi_version=${NCURSES_MAJOR}
+cf_cv_abi_default=${NCURSES_MAJOR}
 cf_cv_rel_version=${NCURSES_MAJOR}.${NCURSES_MINOR}
 dnl Show the computed version, for logging
 cf_cv_timestamp=`date`
-AC_MSG_RESULT(Configuring NCURSES $cf_cv_rel_version ABI $cf_cv_abi_version ($cf_cv_timestamp))
+AC_MSG_RESULT(Configuring NCURSES $cf_cv_rel_version ABI $cf_cv_abi_default ($cf_cv_timestamp))
 dnl We need these values in the generated headers
 AC_SUBST(NCURSES_MAJOR)
 AC_SUBST(NCURSES_MINOR)
@@ -7296,6 +8481,7 @@ AC_SUBST(NCURSES_PATCH)
 dnl We need these values in the generated makefiles
 AC_SUBST(cf_cv_rel_version)
 AC_SUBST(cf_cv_abi_version)
+AC_SUBST(cf_cv_abi_default)
 AC_SUBST(cf_cv_builtin_bool)
 AC_SUBST(cf_cv_header_stdbool_h)
 AC_SUBST(cf_cv_type_of_bool)dnl
@@ -7333,21 +8519,21 @@ top_builddir=ifelse($1,,`pwd`,$1)
 AC_SUBST(top_builddir)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_TRY_PKG_CONFIG version: 5 updated: 2013/07/06 21:27:06
+dnl CF_TRY_PKG_CONFIG version: 6 updated: 2020/12/31 10:54:15
 dnl -----------------
 dnl This is a simple wrapper to use for pkg-config, for libraries which may be
 dnl available in that form.
 dnl
-dnl $1 = package name
+dnl $1 = package name, which may be a shell variable
 dnl $2 = extra logic to use, if any, after updating CFLAGS and LIBS
 dnl $3 = logic to use if pkg-config does not have the package
 AC_DEFUN([CF_TRY_PKG_CONFIG],[
 AC_REQUIRE([CF_PKG_CONFIG])
 
-if test "$PKG_CONFIG" != none && "$PKG_CONFIG" --exists $1; then
+if test "$PKG_CONFIG" != none && "$PKG_CONFIG" --exists "$1"; then
        CF_VERBOSE(found package $1)
-       cf_pkgconfig_incs="`$PKG_CONFIG --cflags $1 2>/dev/null`"
-       cf_pkgconfig_libs="`$PKG_CONFIG --libs   $1 2>/dev/null`"
+       cf_pkgconfig_incs="`$PKG_CONFIG --cflags "$1" 2>/dev/null`"
+       cf_pkgconfig_libs="`$PKG_CONFIG --libs   "$1" 2>/dev/null`"
        CF_VERBOSE(package $1 CFLAGS: $cf_pkgconfig_incs)
        CF_VERBOSE(package $1 LIBS: $cf_pkgconfig_libs)
        CF_ADD_CFLAGS($cf_pkgconfig_incs)
@@ -7360,34 +8546,20 @@ else
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_TRY_XOPEN_SOURCE version: 2 updated: 2018/06/20 20:23:13
+dnl CF_TRY_XOPEN_SOURCE version: 4 updated: 2022/09/10 15:16:16
 dnl -------------------
 dnl If _XOPEN_SOURCE is not defined in the compile environment, check if we
 dnl can define it successfully.
 AC_DEFUN([CF_TRY_XOPEN_SOURCE],[
 AC_CACHE_CHECK(if we should define _XOPEN_SOURCE,cf_cv_xopen_source,[
-       AC_TRY_COMPILE([
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-],[
-#ifndef _XOPEN_SOURCE
-make an error
-#endif],
+       AC_TRY_COMPILE(CF__XOPEN_SOURCE_HEAD,CF__XOPEN_SOURCE_BODY,
        [cf_cv_xopen_source=no],
        [cf_save="$CPPFLAGS"
         CF_APPEND_TEXT(CPPFLAGS,-D_XOPEN_SOURCE=$cf_XOPEN_SOURCE)
-        AC_TRY_COMPILE([
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-],[
-#ifdef _XOPEN_SOURCE
-make an error
-#endif],
-       [cf_cv_xopen_source=no],
-       [cf_cv_xopen_source=$cf_XOPEN_SOURCE])
-       CPPFLAGS="$cf_save"
+        AC_TRY_COMPILE(CF__XOPEN_SOURCE_HEAD,CF__XOPEN_SOURCE_BODY,
+               [cf_cv_xopen_source=no],
+               [cf_cv_xopen_source=$cf_XOPEN_SOURCE])
+               CPPFLAGS="$cf_save"
        ])
 ])
 
@@ -7395,11 +8567,11 @@ if test "$cf_cv_xopen_source" != no ; then
        CF_REMOVE_DEFINE(CFLAGS,$CFLAGS,_XOPEN_SOURCE)
        CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,_XOPEN_SOURCE)
        cf_temp_xopen_source="-D_XOPEN_SOURCE=$cf_cv_xopen_source"
-       CF_ADD_CFLAGS($cf_temp_xopen_source)
+       CF_APPEND_CFLAGS($cf_temp_xopen_source)
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_TYPEOF_CHTYPE version: 10 updated: 2017/01/21 11:06:25
+dnl CF_TYPEOF_CHTYPE version: 11 updated: 2023/01/05 17:57:59
 dnl ----------------
 dnl Determine the type we should use for chtype (and attr_t, which is treated
 dnl as the same thing).  We want around 32 bits, so on most machines want a
@@ -7410,8 +8582,8 @@ AC_DEFUN([CF_TYPEOF_CHTYPE],
 AC_MSG_CHECKING([for type of chtype])
 AC_CACHE_VAL(cf_cv_typeof_chtype,[
                AC_TRY_RUN([
+$ac_includes_default
 #define WANT_BITS 31
-#include <stdio.h>
 int main(void)
 {
        FILE *fp = fopen("cf_test.out", "w");
@@ -7451,7 +8623,7 @@ AC_SUBST(cf_cv_typeof_chtype)
 AC_DEFINE_UNQUOTED(TYPEOF_CHTYPE,$cf_cv_typeof_chtype,[Define to actual type if needed for chtype])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_TYPE_SIGACTION version: 4 updated: 2012/10/06 17:56:13
+dnl CF_TYPE_SIGACTION version: 5 updated: 2023/12/03 09:21:34
 dnl -----------------
 dnl
 AC_DEFUN([CF_TYPE_SIGACTION],
@@ -7460,14 +8632,14 @@ AC_MSG_CHECKING([for type sigaction_t])
 AC_CACHE_VAL(cf_cv_type_sigaction,[
        AC_TRY_COMPILE([
 #include <signal.h>],
-               [sigaction_t x],
+               [sigaction_t x; (void)x],
                [cf_cv_type_sigaction=yes],
                [cf_cv_type_sigaction=no])])
 AC_MSG_RESULT($cf_cv_type_sigaction)
 test "$cf_cv_type_sigaction" = yes && AC_DEFINE(HAVE_TYPE_SIGACTION,1,[Define to 1 if we have the sigaction_t type])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_UNSIGNED_LITERALS version: 2 updated: 1998/02/07 22:10:16
+dnl CF_UNSIGNED_LITERALS version: 3 updated: 2023/12/03 10:02:17
 dnl --------------------
 dnl Test if the compiler supports 'U' and 'L' suffixes.  Only old compilers
 dnl won't, but they're still there.
@@ -7475,7 +8647,7 @@ AC_DEFUN([CF_UNSIGNED_LITERALS],
 [
 AC_MSG_CHECKING([if unsigned literals are legal])
 AC_CACHE_VAL(cf_cv_unsigned_literals,[
-       AC_TRY_COMPILE([],[long x = 1L + 1UL + 1U + 1],
+       AC_TRY_COMPILE([],[long x = 1L + 1UL + 1U + 1; (void)x],
                [cf_cv_unsigned_literals=yes],
                [cf_cv_unsigned_literals=no])
        ])
@@ -7491,15 +8663,20 @@ AC_DEFUN([CF_UPPER],
 $1=`echo "$2" | sed y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%`
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_UTF8_LIB version: 8 updated: 2012/10/06 08:57:51
+dnl CF_UTF8_LIB version: 10 updated: 2023/01/11 04:05:23
 dnl -----------
 dnl Check for multibyte support, and if not found, utf8 compatibility library
 AC_DEFUN([CF_UTF8_LIB],
 [
+AC_HAVE_HEADERS(wchar.h)
 AC_CACHE_CHECK(for multibyte character support,cf_cv_utf8_lib,[
        cf_save_LIBS="$LIBS"
        AC_TRY_LINK([
-#include <stdlib.h>],[putwc(0,0);],
+$ac_includes_default
+#ifdef HAVE_WCHAR_H
+#include <wchar.h>
+#endif
+],[putwc(0,0);],
        [cf_cv_utf8_lib=yes],
        [CF_FIND_LINKAGE([
 #include <libutf8.h>],[putwc(0,0);],utf8,
@@ -7610,7 +8787,7 @@ AC_DEFUN([CF_VERBOSE],
 CF_MSG_LOG([$1])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_VERSION_INFO version: 7 updated: 2015/04/17 21:13:04
+dnl CF_VERSION_INFO version: 8 updated: 2021/01/01 13:31:04
 dnl ---------------
 dnl Define several useful symbols derived from the VERSION file.  A separate
 dnl file is preferred to embedding the version numbers in various scripts.
@@ -7638,13 +8815,13 @@ dnl $1 = internal name for package
 dnl $2 = external name for package
 AC_DEFUN([CF_VERSION_INFO],
 [
-if test -f $srcdir/VERSION ; then
+if test -f "$srcdir/VERSION" ; then
        AC_MSG_CHECKING(for package version)
 
        # if there are not enough fields, cut returns the last one...
-       cf_field1=`sed -e '2,$d' $srcdir/VERSION|cut -f1`
-       cf_field2=`sed -e '2,$d' $srcdir/VERSION|cut -f2`
-       cf_field3=`sed -e '2,$d' $srcdir/VERSION|cut -f3`
+       cf_field1=`sed -e '2,$d' "$srcdir/VERSION" |cut -f1`
+       cf_field2=`sed -e '2,$d' "$srcdir/VERSION" |cut -f2`
+       cf_field3=`sed -e '2,$d' "$srcdir/VERSION" |cut -f3`
 
        # this is how CF_BUNDLED_INTL uses $VERSION:
        VERSION="$cf_field1"
@@ -7698,7 +8875,7 @@ ifelse($1,,,[
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WCHAR_TYPE version: 4 updated: 2012/10/06 16:39:58
+dnl CF_WCHAR_TYPE version: 5 updated: 2023/12/03 09:21:34
 dnl -------------
 dnl Check if type wide-character type $1 is declared, and if so, which header
 dnl file is needed.  The second parameter is used to set a shell variable when
@@ -7715,7 +8892,7 @@ AC_TRY_COMPILE([
 #ifdef HAVE_LIBUTF8_H
 #include <libutf8.h>
 #endif],
-       [$1 state],
+       [$1 state; (void)state],
        [cf_cv_$1=no],
        [AC_TRY_COMPILE([
 #include <stdlib.h>
@@ -7725,7 +8902,7 @@ AC_TRY_COMPILE([
 #ifdef HAVE_LIBUTF8_H
 #include <libutf8.h>
 #endif],
-       [$1 value],
+       [$1 value; (void) value],
        [cf_cv_$1=yes],
        [cf_cv_$1=unknown])])])
 
@@ -7774,7 +8951,25 @@ weak_symbol(fopen);
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_ABI_VERSION version: 3 updated: 2015/06/06 16:10:11
+dnl CF_WITH_ABI_ALTERED version: 1 updated: 2023/01/07 16:32:06
+dnl -------------------
+dnl Provide a way to override the displayed ABI version, e.g., in filenames.
+dnl Check this option after using the ABI version in configuration decisions.
+AC_DEFUN([CF_WITH_ABI_ALTERED],[
+AC_REQUIRE([CF_WITH_ABI_VERSION])
+AC_REQUIRE([CF_ABI_DEFAULTS])
+AC_ARG_WITH(abi-altered,
+[  --with-abi-altered=XXX  override visible ABI version, for packaging],[
+       CF_NUMBER_SYNTAX($withval,ABI altered)
+       if test "$cf_cv_abi_version" != "$withval"
+       then
+               AC_MSG_WARN(altering visible ABI from $cf_cv_abi_version to $withval)
+               cf_cv_abi_version=$withval
+       fi
+])dnl
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_WITH_ABI_VERSION version: 5 updated: 2023/01/07 16:32:06
 dnl -------------------
 dnl Allow library's ABI to be overridden.  Generally this happens when a
 dnl packager has incremented the ABI past that used in the original package,
@@ -7789,7 +8984,7 @@ AC_ARG_WITH(abi-version,
        if test "x$cf_cv_abi_version" != "x$withval"
        then
                AC_MSG_WARN(overriding ABI version $cf_cv_abi_version to $withval)
-               case $cf_cv_rel_version in
+               case "$cf_cv_rel_version" in
                (5.*)
                        cf_cv_rel_version=$withval.0
                        ;;
@@ -7803,28 +8998,29 @@ AC_ARG_WITH(abi-version,
 ifelse($1,,,[
 $1_ABI=$cf_cv_abi_version
 ])
+cf_cv_abi_default=$cf_cv_abi_version
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_ADA_COMPILER version: 2 updated: 2010/06/26 17:35:58
+dnl CF_WITH_ADA_COMPILER version: 3 updated: 2023/10/28 11:59:01
 dnl --------------------
 dnl Command-line option to specify the Ada95 compiler.
 AC_DEFUN([CF_WITH_ADA_COMPILER],[
-AC_MSG_CHECKING(for ada-compiler)
+AC_MSG_CHECKING(for Ada95 compiler)
 AC_ARG_WITH(ada-compiler,
-       [  --with-ada-compiler=CMD specify Ada95 compiler command (default gnatmake)],
+       [[  --with-ada-compiler[=CMD] use CMD as Ada95 compiler (default: gnatmake)]],
        [cf_ada_compiler=$withval],
        [cf_ada_compiler=gnatmake])
 AC_SUBST(cf_ada_compiler)
 AC_MSG_RESULT($cf_ada_compiler)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_ADA_INCLUDE version: 2 updated: 2010/06/26 17:35:58
+dnl CF_WITH_ADA_INCLUDE version: 3 updated: 2023/10/28 11:59:01
 dnl -------------------
 dnl Command-line option to specify where Ada includes will install.
 AC_DEFUN([CF_WITH_ADA_INCLUDE],[
-AC_MSG_CHECKING(for ada-include)
+AC_MSG_CHECKING(for Ada95 include directory)
 CF_WITH_PATH(ada-include,
-   [  --with-ada-include=DIR  Ada includes are in DIR],
+   [  --with-ada-include=DIR  find Ada95 includes in DIR],
    ADA_INCLUDE,
    PREFIX/share/ada/adainclude,
    [$]prefix/share/ada/adainclude)
@@ -7832,16 +9028,16 @@ AC_SUBST(ADA_INCLUDE)
 AC_MSG_RESULT($ADA_INCLUDE)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_ADA_LIBNAME version: 1 updated: 2019/09/07 18:59:41
+dnl CF_WITH_ADA_LIBNAME version: 3 updated: 2023/11/22 20:48:30
 dnl -------------------
 dnl CF_WITH_ADA_LIBNAME
 dnl -------------------
 dnl Command-line option to specify how to name the resulting Ada library.
 dnl $1 = default value
 AC_DEFUN([CF_WITH_ADA_LIBNAME],[
-AC_MSG_CHECKING(for ada-libname)
+AC_MSG_CHECKING(for Ada95 curses library name)
 AC_ARG_WITH(ada-libname,
-   [  --with-ada-libname=XXX  override default Ada library-name],
+   [[  --with-ada-libname[=XXX]  use XXX as Ada95 library name]],
    ADA_LIBNAME=[$]withval,
    ADA_LIBNAME=$1)
 case "x$ADA_LIBNAME" in
@@ -7853,13 +9049,13 @@ AC_SUBST(ADA_LIBNAME)
 AC_MSG_RESULT($ADA_LIBNAME)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_ADA_OBJECTS version: 2 updated: 2010/06/26 17:35:58
+dnl CF_WITH_ADA_OBJECTS version: 3 updated: 2023/10/28 11:59:01
 dnl -------------------
 dnl Command-line option to specify where Ada objects will install.
 AC_DEFUN([CF_WITH_ADA_OBJECTS],[
-AC_MSG_CHECKING(for ada-objects)
+AC_MSG_CHECKING(for Ada95 object directory)
 CF_WITH_PATH(ada-objects,
-   [  --with-ada-objects=DIR  Ada objects are in DIR],
+   [  --with-ada-objects=DIR  find Ada95 objects in DIR],
    ADA_OBJECTS,
    PREFIX/lib/ada/adalib,
    [$]prefix/lib/ada/adalib)
@@ -7867,28 +9063,34 @@ AC_SUBST(ADA_OBJECTS)
 AC_MSG_RESULT($ADA_OBJECTS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_ADA_SHAREDLIB version: 5 updated: 2018/07/21 19:10:35
+dnl CF_WITH_ADA_SHAREDLIB version: 6 updated: 2023/10/28 11:59:01
 dnl ---------------------
-dnl Command-line option to specify if an Ada95 shared-library should be built,
+dnl Command-line option to specify if an Ada95 shared library should be built,
 dnl and optionally what its soname should be.
 AC_DEFUN([CF_WITH_ADA_SHAREDLIB],[
 AC_REQUIRE([CF_GNAT_PROJECTS])
-AC_MSG_CHECKING(if an Ada95 shared-library should be built)
+AC_MSG_CHECKING(whether to build an Ada95 shared library)
 AC_ARG_WITH(ada-sharedlib,
-       [  --with-ada-sharedlib=soname build shared-library (requires GNAT projects)],
+       [  --with-ada-sharedlib    build Ada95 shared library; requires GNAT project support],
        [with_ada_sharedlib=$withval],
        [with_ada_sharedlib=no])
-AC_MSG_RESULT($with_ada_sharedlib)
+cf_ada_sharedlib_warn=no
 
 if test "x$with_ada_sharedlib" != xno
 then
        if test "x$cf_gnat_projects" != xyes
        then
-               AC_MSG_WARN(disabling shared-library since GNAT projects are not supported)
                with_ada_sharedlib=no
+               cf_ada_sharedlib_warn=yes
        fi
 fi
 
+AC_MSG_RESULT($with_ada_sharedlib)
+if test "x$cf_ada_sharedlib_warn" != xno
+then
+       AC_MSG_WARN(disabling Ada95 shared library since GNAT projects are not supported)
+fi
+
 ADA_SHAREDLIB='lib$(LIB_NAME).so.1'
 MAKE_ADA_SHAREDLIB="#"
 
@@ -7935,7 +9137,7 @@ if test "$with_dmalloc" = yes ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_EXPORT_SYMS version: 3 updated: 2014/12/20 19:16:08
+dnl CF_WITH_EXPORT_SYMS version: 5 updated: 2023/11/22 20:48:30
 dnl -------------------
 dnl Use this with libtool to specify the list of symbols that may be exported.
 dnl The input file contains one symbol per line; comments work with "#".
@@ -7945,7 +9147,7 @@ AC_DEFUN([CF_WITH_EXPORT_SYMS],
 [
 AC_MSG_CHECKING(if exported-symbols file should be used)
 AC_ARG_WITH(export-syms,
-       [  --with-export-syms=XXX  limit exported symbols using libtool],
+       [[  --with-export-syms[=SYM-FILE] limit symbols exported by libtool to those listed in SYM-FILE]],
        [with_export_syms=$withval],
        [with_export_syms=no])
 if test "x$with_export_syms" = xyes
@@ -7999,7 +9201,7 @@ if test "$with_gpm" != no ; then
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_LIBTOOL version: 35 updated: 2017/08/12 07:58:51
+dnl CF_WITH_LIBTOOL version: 36 updated: 2021/01/01 13:31:04
 dnl ---------------
 dnl Provide a configure option to incorporate libtool.  Define several useful
 dnl symbols for the makefile rules.
@@ -8104,7 +9306,7 @@ ifdef([AC_PROG_LIBTOOL],[
        AC_SUBST([LT_UNDEF])
 
        # special hack to add --tag option for C++ compiler
-       case $cf_cv_libtool_version in
+       case "$cf_cv_libtool_version" in
        (1.[[5-9]]*|[[2-9]].[[0-9.a-z]]*)
                LIBTOOL_CXX="$LIBTOOL --tag=CXX"
                LIBTOOL="$LIBTOOL --tag=CC"
@@ -8137,7 +9339,7 @@ AC_SUBST(LIB_UNINSTALL)
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_LIBTOOL_OPTS version: 4 updated: 2015/04/17 21:13:04
+dnl CF_WITH_LIBTOOL_OPTS version: 6 updated: 2023/11/22 20:48:30
 dnl --------------------
 dnl Allow user to pass additional libtool options into the library creation
 dnl and link steps.  The main use for this is to do something like
@@ -8147,7 +9349,7 @@ dnl       ./configure --enable-static
 AC_DEFUN([CF_WITH_LIBTOOL_OPTS],[
 AC_MSG_CHECKING(for additional libtool options)
 AC_ARG_WITH(libtool-opts,
-       [  --with-libtool-opts=XXX specify additional libtool options],
+       [[  --with-libtool-opts[=XXX] give libtool additional options XXX]],
        [with_libtool_opts=$withval],
        [with_libtool_opts=no])
 AC_MSG_RESULT($with_libtool_opts)
@@ -8163,7 +9365,36 @@ esac
 AC_SUBST(LIBTOOL_OPTS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_LIB_PREFIX version: 1 updated: 2012/01/21 19:28:10
+dnl CF_WITH_LIB_BASENAME version: 2 updated: 2023/11/22 20:48:30
+dnl --------------------
+dnl Allow for overriding the basename of a library, i.e., the part to which
+dnl prefixes/suffixes are attached.
+dnl
+dnl $1 = variable to set
+dnl $2 = option name
+dnl $3 = default basename for library, if omitted use $2
+AC_DEFUN([CF_WITH_LIB_BASENAME],
+[
+AC_MSG_CHECKING(for desired basename for $2 library)
+AC_ARG_WITH($2-libname,
+       [[  --with-$2-libname[=XXX] override ifelse($3,,$2,$3) basename of library]],
+       [with_lib_basename=$withval],
+       [with_lib_basename=ifelse($3,,$2,$3)])
+$1="$with_lib_basename"
+
+case "x[$]$1" in
+(x|xno|xnone|xyes)
+       $1=ifelse($3,,$2,$3)
+       ;;
+(*)
+       ;;
+esac
+
+AC_MSG_RESULT([$]$1)
+AC_SUBST($1)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_WITH_LIB_PREFIX version: 2 updated: 2021/01/01 16:53:59
 dnl ------------------
 dnl Allow the library-prefix to be overridden.  OS/2 EMX originally had no
 dnl "lib" prefix, e.g., because it used the dll naming convention.
@@ -8178,10 +9409,10 @@ AC_ARG_WITH(lib-prefix,
        [with_lib_prefix=auto])
 AC_MSG_RESULT($with_lib_prefix)
 
-if test $with_lib_prefix = auto
+if test "$with_lib_prefix" = auto
 then
        CF_LIB_PREFIX($1)
-elif test $with_lib_prefix = no
+elif test "$with_lib_prefix" = no
 then
        LIB_PREFIX=
 else
@@ -8189,7 +9420,7 @@ else
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_PATH version: 11 updated: 2012/09/29 15:04:19
+dnl CF_WITH_PATH version: 12 updated: 2021/09/04 06:35:04
 dnl ------------
 dnl Wrapper for AC_ARG_WITH to ensure that user supplies a pathname, not just
 dnl defaulting to yes/no.
@@ -8198,7 +9429,7 @@ dnl $1 = option name
 dnl $2 = help-text
 dnl $3 = environment variable to set
 dnl $4 = default value, shown in the help-message, must be a constant
-dnl $5 = default value, if it's an expression & cannot be in the help-message
+dnl $5 = default value, if it is an expression & cannot be in the help-message
 dnl
 AC_DEFUN([CF_WITH_PATH],
 [AC_ARG_WITH($1,[$2 ](default: ifelse([$4],,empty,[$4])),,
@@ -8210,7 +9441,7 @@ eval $3="$withval"
 AC_SUBST($3)dnl
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_PATHLIST version: 10 updated: 2015/04/17 21:13:04
+dnl CF_WITH_PATHLIST version: 13 updated: 2021/09/04 06:35:04
 dnl ----------------
 dnl Process an option specifying a list of colon-separated paths.
 dnl
@@ -8218,7 +9449,7 @@ dnl $1 = option name
 dnl $2 = help-text
 dnl $3 = environment variable to set
 dnl $4 = default value, shown in the help-message, must be a constant
-dnl $5 = default value, if it's an expression & cannot be in the help-message
+dnl $5 = default value, if it is an expression & cannot be in the help-message
 dnl $6 = flag to tell if we want to define or substitute
 dnl
 AC_DEFUN([CF_WITH_PATHLIST],[
@@ -8239,9 +9470,9 @@ IFS="$ac_save_ifs"
 ifelse($6,define,[
 # Strip single quotes from the value, e.g., when it was supplied as a literal
 # for $4 or $5.
-case $cf_dst_path in
+case "$cf_dst_path" in
 (\'*)
-  cf_dst_path=`echo $cf_dst_path |sed -e s/\'// -e s/\'\$//`
+  cf_dst_path="`echo "$cf_dst_path" |sed -e s/\'// -e s/\'\$//`"
   ;;
 esac
 cf_dst_path=`echo "$cf_dst_path" | sed -e 's/\\\\/\\\\\\\\/g'`
@@ -8262,7 +9493,33 @@ AC_SUBST($3)dnl
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_PCRE2 version: 2 updated: 2018/07/14 16:47:56
+dnl CF_WITH_PATH_PROG version: 1 updated: 2019/06/30 19:44:43
+dnl -----------------
+dnl Check for a given program, like CF_PATH_PROG, but allow override using a
+dnl "--with-xxx" option.
+dnl
+dnl Parameters:
+dnl            $1 = environment variable to set/update
+dnl            $2 = program name
+dnl            $3 = help-text
+dnl            $4 = $PATH
+AC_DEFUN([CF_WITH_PATH_PROG],[
+AC_ARG_WITH($2-path,
+       [  --with-$2-path=XXX     specify path of $2 ifelse($3,,,$3)],
+       [AC_MSG_CHECKING(for $2 program ifelse($3,,,$3))
+               $1=$withval
+               AC_MSG_RESULT([$]$1)
+               CF_PATH_SYNTAX($1)
+       ],
+       [CF_PATH_PROG($1,$2,,ifelse($4,,,$4))
+               if test -z "[$]$1"
+               then
+                       AC_MSG_WARN(no $2 program found ifelse($3,,,$3))
+               fi
+       ])
+])
+dnl ---------------------------------------------------------------------------
+dnl CF_WITH_PCRE2 version: 6 updated: 2021/08/11 20:35:34
 dnl -------------
 dnl Add PCRE2 (Perl-compatible regular expressions v2) to the build if it is
 dnl available and the user requests it.  Assume the application will otherwise
@@ -8280,14 +9537,17 @@ test -z "$with_pcre2" && with_pcre2=no
 AC_MSG_RESULT($with_pcre2)
 
 if test "x$with_pcre2" != xno ; then
-       CF_TRY_PKG_CONFIG(libpcre2,,[
-       CF_TRY_PKG_CONFIG(libpcre,,[
-                       AC_MSG_ERROR(Cannot find PCRE2 library)])])
+       cf_with_pcre2_ok=no
+       for cf_with_pcre2 in libpcre2 libpcre2-posix libpcre
+       do
+               CF_TRY_PKG_CONFIG($cf_with_pcre2,[cf_with_pcre2_ok=yes; break])
+       done
+       cf_with_pcre2_ok=yes || AC_MSG_ERROR(Cannot find PCRE2 library)
 
        AC_DEFINE(HAVE_LIB_PCRE2,1,[Define to 1 if we can/should compile with the PCRE2 library])
 
        # if pkgconfig gave no results, look for the libraries directly
-       case $LIBS in
+       case "$LIBS" in
        (*pcre2-posix*|*pcreposix*)
                ;;
        (*)
@@ -8300,16 +9560,27 @@ if test "x$with_pcre2" != xno ; then
        esac
 
        # either way, check for the library header files
-       AC_CHECK_HEADERS(pcre2-posix.h pcreposix.h)
+       AC_CHECK_HEADERS(pcre2posix.h pcreposix.h)
+       AC_CHECK_FUNCS(PCRE2regcomp)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_PKG_CONFIG_LIBDIR version: 10 updated: 2015/08/22 17:10:56
+dnl CF_WITH_PKG_CONFIG_LIBDIR version: 23 updated: 2023/11/22 20:48:30
 dnl -------------------------
 dnl Allow the choice of the pkg-config library directory to be overridden.
+dnl
+dnl pkg-config uses a search-list built from these colon-separated lists of
+dnl directories:
+dnl a) $PKG_CONFIG_PATH (tested first, added if set)
+dnl b) $PKG_CONFIG_LIBDIR (tested second, added if set)
+dnl c) builtin-list (added if $PKG_CONFIG_LIBDIR is not set)
+dnl
+dnl pkgconf (used with some systems such as FreeBSD in place of pkg-config)
+dnl optionally ignores $PKG_CONFIG_LIBDIR.  Very old versions of pkg-config,
+dnl e.g., Solaris 10 also do not recognize $PKG_CONFIG_LIBDIR.
 AC_DEFUN([CF_WITH_PKG_CONFIG_LIBDIR],[
 
-case $PKG_CONFIG in
+case "$PKG_CONFIG" in
 (no|none|yes)
        AC_MSG_CHECKING(for pkg-config library directory)
        ;;
@@ -8318,99 +9589,124 @@ case $PKG_CONFIG in
        ;;
 esac
 
-PKG_CONFIG_LIBDIR=no
+# if $PKG_CONFIG_LIBDIR is set, try to use that
+if test -n "$PKG_CONFIG_PATH"; then
+       cf_search_path=`echo "$PKG_CONFIG_PATH" | sed -e 's/:/ /g' -e 's,^[[    ]]*,,' -e 's,[[         ]]*$,,'`
+elif test -n "$PKG_CONFIG_LIBDIR"; then
+       cf_search_path=`echo "$PKG_CONFIG_LIBDIR" | sed -e 's/:/ /g' -e 's,^[[  ]]*,,' -e 's,[[         ]]*$,,'`
+else
+       cf_search_path=auto
+fi
+
+# if the option is used, let that override.  otherwise default to "libdir"
 AC_ARG_WITH(pkg-config-libdir,
-       [  --with-pkg-config-libdir=XXX use given directory for installing pc-files],
-       [PKG_CONFIG_LIBDIR=$withval],
-       [test "x$PKG_CONFIG" != xnone && PKG_CONFIG_LIBDIR=yes])
+       [[  --with-pkg-config-libdir[=XXX] use given directory for installing pc-files]],
+       [cf_search_path=$withval],
+       [test "x$PKG_CONFIG" != xnone && test -z "$cf_search_path" && cf_search_path=libdir])
 
-case x$PKG_CONFIG_LIBDIR in
+case "x$cf_search_path" in
+(xlibdir)
+       PKG_CONFIG_LIBDIR='${libdir}/pkgconfig'
+       AC_MSG_RESULT($PKG_CONFIG_LIBDIR)
+       cf_search_path=
+       ;;
+(x)
+       ;;
+(x/*\ *)
+       PKG_CONFIG_LIBDIR=
+       ;;
 (x/*)
+       PKG_CONFIG_LIBDIR="$cf_search_path"
+       AC_MSG_RESULT($PKG_CONFIG_LIBDIR)
+       cf_search_path=
        ;;
-(xyes)
+(xyes|xauto)
+       AC_MSG_RESULT(auto)
+       cf_search_path=
        # Look for the library directory using the same prefix as the executable
-       if test "x$PKG_CONFIG" = xnone
+       AC_MSG_CHECKING(for search-list)
+       if test "x$PKG_CONFIG" != xnone
        then
-               cf_path=$prefix
-       else
-               cf_path=`echo "$PKG_CONFIG" | sed -e 's,/[[^/]]*/[[^/]]*$,,'`
+               # works for pkg-config since version 0.24 (2009)
+               # works for pkgconf since version 0.8.3 (2012)
+               for cf_pkg_program in \
+                       `echo "$PKG_CONFIG" | sed -e 's,^.*/,,'` \
+                       pkg-config \
+                       pkgconf
+               do
+                       cf_search_path=`"$PKG_CONFIG" --variable=pc_path "$cf_pkg_program" 2>/dev/null | tr : ' '`
+                       test -n "$cf_search_path" && break
+               done
+
+               # works for pkg-config since import in 2005 of original 2001 HP code.
+               test -z "$cf_search_path" && \
+               cf_search_path=`
+               "$PKG_CONFIG" --debug --exists no-such-package 2>&1 | $AWK "\
+/^Scanning directory (#[1-9][0-9]* )?'.*'$/{ \
+       sub(\"^[[^']]*'\",\"\"); \
+       sub(\"'.*\",\"\"); \
+       printf \" %s\", \\[$]0; } \
+{ next; } \
+"`
        fi
 
-       # If you don't like using the default architecture, you have to specify the
-       # intended library directory and corresponding compiler/linker options.
-       #
-       # This case allows for Debian's 2014-flavor of multiarch, along with the
-       # most common variations before that point.  Some other variants spell the
-       # directory differently, e.g., "pkg-config", and put it in unusual places.
-       # pkg-config has always been poorly standardized, which is ironic...
-       case x`(arch) 2>/dev/null` in
-       (*64)
-               cf_search_path="\
-                       $cf_path/lib/*64-linux-gnu \
-                       $cf_path/share \
-                       $cf_path/lib64 \
-                       $cf_path/lib32 \
-                       $cf_path/lib"
-               ;;
-       (*)
-               cf_search_path="\
-                       $cf_path/lib/*-linux-gnu \
-                       $cf_path/share \
-                       $cf_path/lib32 \
-                       $cf_path/lib \
-                       $cf_path/libdata"
-               ;;
-       esac
+       AC_MSG_RESULT($cf_search_path)
+       ;;
+(*)
+       AC_MSG_ERROR(Unexpected option value: $cf_search_path)
+       ;;
+esac
 
-       CF_VERBOSE(list...)
+if test -n "$cf_search_path"
+then
+       AC_MSG_CHECKING(for first directory)
+       cf_pkg_config_path=none
        for cf_config in $cf_search_path
        do
-               CF_VERBOSE(checking $cf_config/pkgconfig)
-               if test -d $cf_config/pkgconfig
+               if test -d "$cf_config"
                then
-                       PKG_CONFIG_LIBDIR=$cf_config/pkgconfig
-                       AC_MSG_CHECKING(done)
+                       cf_pkg_config_path=$cf_config
                        break
                fi
        done
-       ;;
-(*)
-       ;;
-esac
+       AC_MSG_RESULT($cf_pkg_config_path)
 
-if test "x$PKG_CONFIG_LIBDIR" != xno ; then
-       AC_MSG_RESULT($PKG_CONFIG_LIBDIR)
+       if test "x$cf_pkg_config_path" != xnone ; then
+               # limit this to the first directory found
+               PKG_CONFIG_LIBDIR="$cf_pkg_config_path"
+       fi
+
+       if test -z "$PKG_CONFIG_LIBDIR" && test -n "$cf_search_path"
+       then
+               AC_MSG_CHECKING(for workaround)
+               if test "$prefix" = "NONE" ; then
+                       cf_prefix="$ac_default_prefix"
+               else
+                       cf_prefix="$prefix"
+               fi
+               eval cf_libdir=$libdir
+               cf_libdir=`echo "$cf_libdir" | sed -e "s,^NONE,$cf_prefix,"`
+               cf_backup=
+               for cf_config in $cf_search_path
+               do
+                       case $cf_config in
+                       $cf_libdir/pkgconfig)
+                               PKG_CONFIG_LIBDIR=$cf_libdir/pkgconfig
+                               break
+                               ;;
+                       *)
+                               test -z "$cf_backup" && cf_backup=$cf_config
+                               ;;
+                       esac
+               done
+               test -z "$PKG_CONFIG_LIBDIR" && PKG_CONFIG_LIBDIR=$cf_backup
+               AC_MSG_RESULT($PKG_CONFIG_LIBDIR)
+       fi
 fi
 
 AC_SUBST(PKG_CONFIG_LIBDIR)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_PATH_PROG version: 1 updated: 2019/06/30 19:44:43
-dnl -----------------
-dnl Check for a given program, like CF_PATH_PROG, but allow override using a
-dnl "--with-xxx" option.
-dnl
-dnl Parameters:
-dnl            $1 = environment variable to set/update
-dnl            $2 = program name
-dnl            $3 = help-text
-dnl            $4 = $PATH
-AC_DEFUN([CF_WITH_PATH_PROG],[
-AC_ARG_WITH($2-path,
-       [  --with-$2-path=XXX     specify path of $2 ifelse($3,,,$3)],
-       [AC_MSG_CHECKING(for $2 program ifelse($3,,,$3))
-               $1=$withval
-               AC_MSG_RESULT([$]$1)
-               CF_PATH_SYNTAX($1)
-       ],
-       [CF_PATH_PROG($1,$2,,ifelse($4,,,$4))
-               if test -z "[$]$1"
-               then
-                       AC_MSG_WARN(no $2 program found ifelse($3,,,$3))
-               fi
-       ])
-])
-dnl ---------------------------------------------------------------------------
 dnl CF_WITH_PTHREAD version: 7 updated: 2015/04/18 08:56:57
 dnl ---------------
 dnl Check for POSIX thread library.
@@ -8453,7 +9749,7 @@ if test "$with_pthread" != no ; then
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_REL_VERSION version: 1 updated: 2003/09/20 18:12:49
+dnl CF_WITH_REL_VERSION version: 2 updated: 2023/05/06 18:18:18
 dnl -------------------
 dnl Allow library's release-version to be overridden.  Generally this happens when a
 dnl packager has incremented the release-version past that used in the original package,
@@ -8473,6 +9769,7 @@ ifelse($1,,[
 ],[
  $1_MAJOR=`echo "$cf_cv_rel_version" | sed -e 's/\..*//'`
  $1_MINOR=`echo "$cf_cv_rel_version" | sed -e 's/^[[^.]]*//' -e 's/^\.//' -e 's/\..*//'`
+ test -n "$1_MINOR" || $1_MINOR=0
  CF_NUMBER_SYNTAX([$]$1_MAJOR,Release major-version)
  CF_NUMBER_SYNTAX([$]$1_MINOR,Release minor-version)
 ])
@@ -8528,6 +9825,27 @@ AC_ARG_WITH(system-type,
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_WITH_TYPE version: 2 updated: 2023/11/25 16:11:47
+dnl ------------
+dnl Accept a TYPE for substitution:
+dnl $1 = name of type
+dnl $2 = help/usage message
+dnl $3 = symbol to set
+dnl $4 = default value
+AC_DEFUN([CF_WITH_TYPE],[
+AC_MSG_CHECKING(for type of $1)
+AC_ARG_WITH([$1], [$2],
+       [$3="$withval"],
+       [$3=$4])
+AC_MSG_RESULT([$]$3)
+case x[$]$3 in
+(x|xyes|xno)
+       AC_MSG_ERROR(expected a type name for $1)
+       ;;
+esac
+AC_SUBST($3)
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_WITH_VALGRIND version: 1 updated: 2006/12/14 18:00:21
 dnl ----------------
 AC_DEFUN([CF_WITH_VALGRIND],[
@@ -8536,7 +9854,7 @@ CF_NO_LEAKS_OPTION(valgrind,
        [USE_VALGRIND])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_VERSIONED_SYMS version: 8 updated: 2018/10/20 20:24:34
+dnl CF_WITH_VERSIONED_SYMS version: 13 updated: 2023/12/03 09:24:04
 dnl ----------------------
 dnl Use this when building shared library with ELF, to markup symbols with the
 dnl version identifier from the given input file.  Generally that identifier is
@@ -8544,10 +9862,12 @@ dnl the same as the SONAME at which the symbol was first introduced.
 dnl
 dnl $1 = basename of the ".map" file (default $PACKAGE)
 AC_DEFUN([CF_WITH_VERSIONED_SYMS],
-[
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+AC_REQUIRE([AC_PROG_EGREP])dnl
+
 AC_MSG_CHECKING(if versioned-symbols file should be used)
 AC_ARG_WITH(versioned-syms,
-       [  --with-versioned-syms=X markup versioned symbols using ld],
+       [[  --with-versioned-syms[=MAP-FILE] version ELF shared library symbols per MAP-FILE]],
        [with_versioned_syms=$withval],
        [with_versioned_syms=no])
 case "x$with_versioned_syms" in
@@ -8634,15 +9954,15 @@ local:
 EOF
                cat >conftest.$ac_ext <<EOF
 #line __oline__ "configure"
-int    _ismissing(void) { return 1; }
-int    _localf1(void) { return 1; }
-int    _localf2(void) { return 2; }
-int    globalf1(void) { return 1; }
-int    globalf2(void) { return 2; }
-int    _sublocalf1(void) { return 1; }
-int    _sublocalf2(void) { return 2; }
-int    subglobalf1(void) { return 1; }
-int    subglobalf2(void) { return 2; }
+extern int _ismissing(void);    int _ismissing(void)  { return 1; }
+extern int _localf1(void);      int _localf1(void)    { return 1; }
+extern int _localf2(void);      int _localf2(void)    { return 2; }
+extern int globalf1(void);      int globalf1(void)    { return 1; }
+extern int globalf2(void);      int globalf2(void)    { return 2; }
+extern int _sublocalf1(void);   int _sublocalf1(void) { return 1; }
+extern int _sublocalf2(void);   int _sublocalf2(void) { return 2; }
+extern int subglobalf1(void);   int subglobalf1(void) { return 1; }
+extern int subglobalf2(void);   int subglobalf2(void) { return 2; }
 EOF
                cat >conftest.mk <<EOF
 CC=${CC}
@@ -8661,7 +9981,7 @@ EOF
                if make -f conftest.mk 2>&AC_FD_CC >/dev/null
                then
                        # test for missing symbol in either Data or Text section
-                       cf_missing=`nm -P conftest.so 2>&AC_FD_CC |fgrep _ismissing | egrep '[[         ]][[DT]][[      ]]'`
+                       cf_missing="`nm -P conftest.so 2>&AC_FD_CC |${FGREP-fgrep} _ismissing | ${EGREP-egrep} '[[      ]][[DT]][[      ]]'`"
                        test -n "$cf_missing" && WILDCARD_SYMS=yes
                fi
                AC_MSG_RESULT($WILDCARD_SYMS)
@@ -8673,7 +9993,7 @@ AC_SUBST(VERSIONED_SYMS)
 AC_SUBST(WILDCARD_SYMS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_X11_RGB version: 1 updated: 2017/11/25 17:32:16
+dnl CF_WITH_X11_RGB version: 3 updated: 2023/10/28 11:59:01
 dnl ---------------
 dnl Handle configure option "--with-x11-rgb", setting these shell
 dnl variables:
@@ -8713,7 +10033,7 @@ dnl      /usr/X11/lib/X11/rgb.txt
 AC_DEFUN([CF_WITH_X11_RGB],[
 AC_MSG_CHECKING(for X11 rgb file)
 AC_ARG_WITH(x11-rgb,
-       [  --with-x11-rgb=FILE   file containing X11 rgb information (EPREFIX/lib/X11/rgb.txt)],
+       [  --with-x11-rgb=FILE     obtain X11 color definitions from FILE (default: EPREFIX/lib/X11/rgb.txt)],
        [RGB_PATH=$withval],
        [RGB_PATH=auto])
 
@@ -8749,7 +10069,7 @@ fi
 
 AC_MSG_RESULT($RGB_PATH)
 AC_SUBST(RGB_PATH)
-AC_DEFINE_UNQUOTED(RGB_PATH,"$cf_path")
+AC_DEFINE_UNQUOTED(RGB_PATH,"$cf_path",[Define to the full pathname of rgb.txt])
 
 no_x11_rgb=
 if test "$RGB_PATH" = no
@@ -8759,7 +10079,7 @@ fi
 AC_SUBST(no_x11_rgb)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_XOPEN_SOURCE version: 55 updated: 2018/12/31 20:46:17
+dnl CF_XOPEN_SOURCE version: 67 updated: 2023/09/06 18:55:27
 dnl ---------------
 dnl Try to get _XOPEN_SOURCE defined properly that we can use POSIX functions,
 dnl or adapt to the vendor's definitions to get equivalent functionality,
@@ -8768,6 +10088,18 @@ dnl
 dnl Parameters:
 dnl    $1 is the nominal value for _XOPEN_SOURCE
 dnl    $2 is the nominal value for _POSIX_C_SOURCE
+dnl
+dnl The default case prefers _XOPEN_SOURCE over _POSIX_C_SOURCE if the
+dnl implementation predefines it, because X/Open and most implementations agree
+dnl that the latter is a legacy or "aligned" value.
+dnl
+dnl Because _XOPEN_SOURCE is preferred, if defining _POSIX_C_SOURCE turns
+dnl that off, then refrain from setting _POSIX_C_SOURCE explicitly.
+dnl
+dnl References:
+dnl https://pubs.opengroup.org/onlinepubs/007904975/functions/xsh_chap02_02.html
+dnl https://docs.oracle.com/cd/E19253-01/816-5175/standards-5/index.html
+dnl https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html
 AC_DEFUN([CF_XOPEN_SOURCE],[
 AC_REQUIRE([AC_CANONICAL_HOST])
 AC_REQUIRE([CF_POSIX_VISIBLE])
@@ -8778,13 +10110,10 @@ cf_XOPEN_SOURCE=ifelse([$1],,500,[$1])
 cf_POSIX_C_SOURCE=ifelse([$2],,199506L,[$2])
 cf_xopen_source=
 
-case $host_os in
+case "$host_os" in
 (aix[[4-7]]*)
        cf_xopen_source="-D_ALL_SOURCE"
        ;;
-(msys)
-       cf_XOPEN_SOURCE=600
-       ;;
 (darwin[[0-8]].*)
        cf_xopen_source="-D_APPLE_C_SOURCE"
        ;;
@@ -8810,7 +10139,7 @@ case $host_os in
        cf_xopen_source="-D_SGI_SOURCE"
        cf_XOPEN_SOURCE=
        ;;
-(linux*|uclinux*|gnu*|mint*|k*bsd*-gnu|cygwin)
+(linux*gnu|linux*gnuabi64|linux*gnuabin32|linux*gnueabi|linux*gnueabihf|linux*gnux32|uclinux*|gnu*|mint*|k*bsd*-gnu|cygwin|msys|mingw*|linux*uclibc)
        CF_GNU_SOURCE($cf_XOPEN_SOURCE)
        ;;
 (minix*)
@@ -8824,7 +10153,15 @@ case $host_os in
 (netbsd*)
        cf_xopen_source="-D_NETBSD_SOURCE" # setting _XOPEN_SOURCE breaks IPv6 for lynx on NetBSD 1.6, breaks xterm, is not needed for ncursesw
        ;;
-(openbsd[[4-9]]*)
+(openbsd[[6-9]]*)
+       # OpenBSD 6.x has broken locale support, both compile-time and runtime.
+       # see https://www.mail-archive.com/bugs@openbsd.org/msg13200.html
+       # Abusing the conformance level is a workaround.
+       AC_MSG_WARN(this system does not provide usable locale support)
+       cf_xopen_source="-D_BSD_SOURCE"
+       cf_XOPEN_SOURCE=700
+       ;;
+(openbsd[[4-5]]*)
        # setting _XOPEN_SOURCE lower than 500 breaks g++ compile with wchar.h, needed for ncursesw
        cf_xopen_source="-D_BSD_SOURCE"
        cf_XOPEN_SOURCE=600
@@ -8851,12 +10188,20 @@ case $host_os in
        ;;
 (*)
        CF_TRY_XOPEN_SOURCE
+       cf_save_xopen_cppflags="$CPPFLAGS"
        CF_POSIX_C_SOURCE($cf_POSIX_C_SOURCE)
+       # Some of these niche implementations use copy/paste, double-check...
+       if test "$cf_cv_xopen_source" = no ; then
+               CF_VERBOSE(checking if _POSIX_C_SOURCE interferes with _XOPEN_SOURCE)
+               AC_TRY_COMPILE(CF__XOPEN_SOURCE_HEAD,CF__XOPEN_SOURCE_BODY,,[
+                       AC_MSG_WARN(_POSIX_C_SOURCE definition is not usable)
+                       CPPFLAGS="$cf_save_xopen_cppflags"])
+       fi
        ;;
 esac
 
 if test -n "$cf_xopen_source" ; then
-       CF_ADD_CFLAGS($cf_xopen_source,true)
+       CF_APPEND_CFLAGS($cf_xopen_source,true)
 fi
 
 dnl In anything but the default case, we may have system-specific setting
@@ -8866,20 +10211,20 @@ if test -n "$cf_XOPEN_SOURCE" && test -z "$cf_cv_xopen_source" ; then
        AC_MSG_CHECKING(if _XOPEN_SOURCE really is set)
        AC_TRY_COMPILE([#include <stdlib.h>],[
 #ifndef _XOPEN_SOURCE
-make an error
+#error _XOPEN_SOURCE is not defined
 #endif],
        [cf_XOPEN_SOURCE_set=yes],
        [cf_XOPEN_SOURCE_set=no])
        AC_MSG_RESULT($cf_XOPEN_SOURCE_set)
-       if test $cf_XOPEN_SOURCE_set = yes
+       if test "$cf_XOPEN_SOURCE_set" = yes
        then
                AC_TRY_COMPILE([#include <stdlib.h>],[
 #if (_XOPEN_SOURCE - 0) < $cf_XOPEN_SOURCE
-make an error
+#error (_XOPEN_SOURCE - 0) < $cf_XOPEN_SOURCE
 #endif],
                [cf_XOPEN_SOURCE_set_ok=yes],
                [cf_XOPEN_SOURCE_set_ok=no])
-               if test $cf_XOPEN_SOURCE_set_ok = no
+               if test "$cf_XOPEN_SOURCE_set_ok" = no
                then
                        AC_MSG_WARN(_XOPEN_SOURCE is lower than requested)
                fi
@@ -8889,3 +10234,27 @@ make an error
 fi
 fi # cf_cv_posix_visible
 ])
+dnl ---------------------------------------------------------------------------
+dnl CF__SED_TRIMBLANKS version: 1 updated: 2021/01/02 09:31:20
+dnl ------------------
+dnl Trim something using sed, then trim extra whitespace
+dnl $1 = extra parameters, e.g., in CF_STRIP_G_OPT
+define([CF__SED_TRIMBLANKS],[sed ifelse($1,,,[$1] )-e 's%[[    ]]% %g' -e 's% [[ ]]*% %g' -e 's%^ %%' -e 's% [$]%%'])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF__XOPEN_SOURCE_BODY version: 2 updated: 2023/02/18 17:41:25
+dnl ---------------------
+dnl body of test when test-compiling for _XOPEN_SOURCE check
+define([CF__XOPEN_SOURCE_BODY],
+[
+#ifndef _XOPEN_SOURCE
+#error _XOPEN_SOURCE is not defined
+#endif
+])
+dnl ---------------------------------------------------------------------------
+dnl CF__XOPEN_SOURCE_HEAD version: 2 updated: 2023/02/18 17:41:25
+dnl ---------------------
+dnl headers to include when test-compiling for _XOPEN_SOURCE check
+define([CF__XOPEN_SOURCE_HEAD],
+[
+$ac_includes_default
+])