]> ncurses.scripts.mit.edu Git - ncurses.git/blobdiff - test/aclocal.m4
ncurses 6.2 - patch 20200321
[ncurses.git] / test / aclocal.m4
index 8bac16a992f6c57c5e3fe1a8a5f3a01204d0ef9c..e4bd329a81e845e783f845a988589ff21cfdf635 100644 (file)
@@ -1,5 +1,6 @@
 dnl***************************************************************************
-dnl Copyright (c) 2003-2018,2019 Free Software Foundation, Inc.              *
+dnl Copyright 2018-2019,2020 Thomas E. Dickey                                *
+dnl Copyright 2003-2017,2018 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            *
@@ -26,7 +27,7 @@ dnl sale, use or other dealings in this Software without prior written       *
 dnl authorization.                                                           *
 dnl***************************************************************************
 dnl
-dnl $Id: aclocal.m4,v 1.168 2019/12/31 14:02:08 tom Exp $
+dnl $Id: aclocal.m4,v 1.179 2020/03/20 00:23:48 tom Exp $
 dnl
 dnl Author: Thomas E. Dickey
 dnl
@@ -36,11 +37,13 @@ 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 http://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: 5 updated: 2020/03/10 18:53:47
 dnl -------------------
 dnl Inserted as requested by gettext 0.10.40
 dnl File from /usr/share/aclocal
@@ -53,7 +56,7 @@ 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);],
+       [char* cs = nl_langinfo(CODESET); (void)cs],
        am_cv_langinfo_codeset=yes,
        am_cv_langinfo_codeset=no)
        ])
@@ -597,7 +600,7 @@ cf_save_CFLAGS="$cf_save_CFLAGS -Qunused-arguments"
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_CONST_X_STRING version: 1 updated: 2019/04/08 17:50:29
+dnl CF_CONST_X_STRING version: 4 updated: 2020/03/10 18:53:47
 dnl -----------------
 dnl The X11R4-X11R6 Xt specification uses an ambiguous String type for most
 dnl character-strings.
@@ -618,12 +621,16 @@ 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); (void)foo],[
 
 AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
        AC_TRY_COMPILE(
@@ -639,6 +646,8 @@ AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
                ])
 ])
 
+CF_RESTORE_XTRA_FLAGS([CF_CONST_X_STRING])
+
 case $cf_cv_const_x_string in
 (no)
        CF_APPEND_TEXT(CPPFLAGS,-DXTSTRINGDEFINES)
@@ -672,7 +681,7 @@ done
 test "$cf_cv_curses_acs_map" != unknown && AC_DEFINE_UNQUOTED(CURSES_ACS_ARRAY,$cf_cv_curses_acs_map,[Define as needed to override ncurses prefix _nc_])
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_CURSES_CHECK_DATA version: 7 updated: 2018/01/03 04:47:33
+dnl CF_CURSES_CHECK_DATA version: 9 updated: 2020/02/08 21:00:26
 dnl --------------------
 dnl Check if curses.h defines the given data/variable.
 dnl Use this after CF_NCURSES_CONFIG or CF_CURSES_CONFIG.
@@ -685,9 +694,9 @@ for cf_data in $1
 do
 AC_MSG_CHECKING(for data $cf_data declaration in ${cf_cv_ncurses_header:-curses.h})
 
-AC_TRY_COMPILE(CF__CURSES_HEAD,[
-void *foo = &($cf_data)
-],[cf_result=yes
+AC_TRY_COMPILE(CF__CURSES_HEAD,
+CF__CURSES_DATA(foo,$cf_data)
+,[cf_result=yes
 ],[cf_result=no])
 AC_MSG_RESULT($cf_result)
 
@@ -703,8 +712,7 @@ else
 extern char $cf_data;
 int main(void)
 {
-       void *foo = &($cf_data);
-       fprintf(stderr, "testing linkage of $cf_data:%p\n", (void *)foo);
+       ]CF__CURSES_DATA(foo,$cf_data)[
        ${cf_cv_main_return:-return}(foo == 0);
 }],[cf_result=yes
 ],[cf_result=no],[
@@ -712,8 +720,7 @@ int main(void)
        AC_TRY_LINK(CF__CURSES_HEAD
 [extern char $cf_data;],[
        do {
-               void *foo = &($cf_data);
-               fprintf(stderr, "testing linkage of $cf_data:%p\n", (void *)foo);
+               ]CF__CURSES_DATA(foo,$cf_data)[
                ${cf_cv_main_return:-return}(foo == 0);
        } while (0)
 ],[cf_result=yes],[cf_result=no])
@@ -993,7 +1000,7 @@ fi
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CURSES_TERM_H version: 11 updated: 2015/04/15 19:08:48
+dnl CF_CURSES_TERM_H version: 12 updated: 2020/03/19 20:23:48
 dnl ----------------
 dnl SVr4 curses should have term.h as well (where it puts the definitions of
 dnl the low-level interface).  This may not be true in old/broken implementations,
@@ -1022,7 +1029,7 @@ do
        AC_TRY_COMPILE([
 #include <${cf_cv_ncurses_header:-curses.h}>
 #include <${cf_header}>],
-       [WINDOW *x],
+       [WINDOW *x; (void)x],
        [cf_cv_term_header=$cf_header
         break],
        [cf_cv_term_header=no])
@@ -1041,7 +1048,7 @@ case $cf_cv_term_header in
 #else
 make an error
 #endif],
-                       [WINDOW *x],
+                       [WINDOW *x; (void)x],
                        [cf_cv_term_header=$cf_header
                         break],
                        [cf_cv_term_header=no])
@@ -1063,7 +1070,7 @@ case $cf_cv_term_header in
 esac
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CURSES_UNCTRL_H version: 4 updated: 2015/04/15 19:08:48
+dnl CF_CURSES_UNCTRL_H version: 5 updated: 2020/03/19 20:23:48
 dnl ------------------
 dnl Any X/Open curses implementation must have unctrl.h, but ncurses packages
 dnl may put it in a subdirectory (along with ncurses' other headers, of
@@ -1092,7 +1099,7 @@ do
        AC_TRY_COMPILE([
 #include <${cf_cv_ncurses_header:-curses.h}>
 #include <${cf_header}>],
-       [WINDOW *x],
+       [WINDOW *x; (void)x],
        [cf_cv_unctrl_header=$cf_header
         break],
        [cf_cv_unctrl_header=no])
@@ -1118,7 +1125,7 @@ case $cf_cv_unctrl_header in
 esac
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CURSES_WACS_MAP version: 6 updated: 2012/10/06 08:57:51
+dnl CF_CURSES_WACS_MAP version: 7 updated: 2020/03/19 20:23:48
 dnl ------------------
 dnl Check for likely values of wacs_map[].
 AC_DEFUN([CF_CURSES_WACS_MAP],
@@ -1132,7 +1139,7 @@ AC_CACHE_CHECK(for wide alternate character set array, cf_cv_curses_wacs_map,[
 #define _XOPEN_SOURCE_EXTENDED
 #endif
 #include <${cf_cv_ncurses_header:-curses.h}>],
-       [void *foo = &($name['k'])],
+       [void *foo = &($name['k']); (void)foo],
        [cf_cv_curses_wacs_map=$name
         break])
        done])
@@ -1140,7 +1147,7 @@ AC_CACHE_CHECK(for wide alternate character set array, cf_cv_curses_wacs_map,[
 test "$cf_cv_curses_wacs_map" != unknown && AC_DEFINE_UNQUOTED(CURSES_WACS_ARRAY,$cf_cv_curses_wacs_map,[Define to name of (n)curses wide-character array])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CURSES_WACS_SYMBOLS version: 2 updated: 2012/10/06 08:57:51
+dnl CF_CURSES_WACS_SYMBOLS version: 3 updated: 2020/03/19 20:23:48
 dnl ----------------------
 dnl Do a check to see if the WACS_xxx constants are defined compatibly with
 dnl X/Open Curses.  In particular, NetBSD's implementation of the WACS_xxx
@@ -1159,7 +1166,7 @@ then
 #endif
 #include <${cf_cv_ncurses_header:-curses.h}>],
        [cchar_t *foo = WACS_PLUS;
-        $cf_cv_curses_wacs_map['k'] = *WACS_PLUS],
+        $cf_cv_curses_wacs_map['k'] = *WACS_PLUS; (void)foo],
        [cf_cv_curses_wacs_symbols=yes])
 else
        AC_TRY_LINK([
@@ -1167,7 +1174,7 @@ else
 #define _XOPEN_SOURCE_EXTENDED
 #endif
 #include <${cf_cv_ncurses_header:-curses.h}>],
-       [cchar_t *foo = WACS_PLUS],
+       [cchar_t *foo = WACS_PLUS; (void)foo],
        [cf_cv_curses_wacs_symbols=yes])
 fi
 ])
@@ -1550,7 +1557,7 @@ AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GCC_ATTRIBUTES version: 17 updated: 2015/04/12 15:39:00
+dnl CF_GCC_ATTRIBUTES version: 18 updated: 2020/03/10 18:53:47
 dnl -----------------
 dnl Test for availability of useful gcc __attribute__ directives to quiet
 dnl compiler warnings.  Though useful, not all are supported -- and contrary
@@ -1594,7 +1601,7 @@ cat > conftest.$ac_ext <<EOF
 extern void wow(char *,...) GCC_SCANFLIKE(1,2);
 extern void oops(char *,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
 extern void foo(void) GCC_NORETURN;
-int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { return 0; }
+int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { (void)argc; (void)argv; return 0; }
 EOF
        cf_printf_attribute=no
        cf_scanf_attribute=no
@@ -1677,12 +1684,13 @@ CF_INTEL_COMPILER(GCC,INTEL_COMPILER,CFLAGS)
 CF_CLANG_COMPILER(GCC,CLANG_COMPILER,CFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GCC_WARNINGS version: 36 updated: 2019/09/07 13:38:36
+dnl CF_GCC_WARNINGS version: 37 updated: 2020/01/05 20:04:12
 dnl ---------------
 dnl Check if the compiler supports useful warning options.  There's a few that
 dnl we don't use, simply because they're too noisy:
 dnl
 dnl    -Wconversion (useful in older versions of gcc, but not in gcc 2.7.x)
+dnl    -Winline (usually not worthwhile)
 dnl    -Wredundant-decls (system headers make this too noisy)
 dnl    -Wtraditional (combines too many unrelated messages, only a few useful)
 dnl    -Wwrite-strings (too noisy, but should review occasionally).  This
@@ -1738,7 +1746,7 @@ then
                fi
        done
        CFLAGS="$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"
@@ -1760,7 +1768,7 @@ 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
@@ -2341,7 +2349,7 @@ printf("old\n");
        ,[$1=no])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_NCURSES_CONFIG version: 21 updated: 2018/06/20 20:23:13
+dnl CF_NCURSES_CONFIG version: 23 updated: 2020/02/27 05:21:59
 dnl -----------------
 dnl Tie together the configure-script macros for ncurses, preferring these in
 dnl order:
@@ -2363,11 +2371,47 @@ if test "x${PKG_CONFIG:=none}" != xnone; then
                AC_MSG_CHECKING(if the $cf_ncuconfig_root package files work)
                cf_have_ncuconfig=unknown
 
+               cf_save_CFLAGS="$CFLAGS"
                cf_save_CPPFLAGS="$CPPFLAGS"
                cf_save_LIBS="$LIBS"
 
-               CF_ADD_CFLAGS(`$PKG_CONFIG --cflags $cf_ncuconfig_root`)
-               CF_ADD_LIBS(`$PKG_CONFIG --libs $cf_ncuconfig_root`)
+               cf_pkg_cflags=`$PKG_CONFIG --cflags $cf_ncuconfig_root`
+               cf_pkg_libs=`$PKG_CONFIG --libs $cf_ncuconfig_root`
+
+               # while -W for passing linker flags is prevalent, it is not "standard". 
+               # At least one wrapper for c89/c99 (in Apple's xcode) has its own
+               # incompatible _and_ non-standard -W option which gives an error.  Work
+               # around that pitfall.
+               case "x${CC}@@${cf_pkg_libs}@${cf_pkg_cflags}" in
+               (x*c[[89]]9@@*-W*)
+                       CF_ADD_CFLAGS($cf_pkg_cflags)
+                       CF_ADD_LIBS($cf_pkg_libs)
+
+                       AC_TRY_LINK([#include <${cf_cv_ncurses_header:-curses.h}>],
+                               [initscr(); mousemask(0,0); tgoto((char *)0, 0, 0);],
+                               [AC_TRY_RUN([#include <${cf_cv_ncurses_header:-curses.h}>
+                                       int main(void)
+                                       { char *xx = curses_version(); return (xx == 0); }],
+                                       [cf_test_ncuconfig=yes],
+                                       [cf_test_ncuconfig=no],
+                                       [cf_test_ncuconfig=maybe])],
+                               [cf_test_ncuconfig=no])
+
+                       CFLAGS="$cf_save_CFLAGS"
+                       CPPFLAGS="$cf_save_CPPFLAGS"
+                       LIBS="$cf_save_LIBS"
+
+                       if test "x$cf_test_ncuconfig" != xyes; then
+                               cf_temp=`echo "x$cf_pkg_cflags" | sed -e s/^x// -e 's/-W[[^     ]]*//g'`
+                               cf_pkg_cflags="$cf_temp"
+                               cf_temp=`echo "x$cf_pkg_libs" | sed -e s/^x// -e 's/-W[[^       ]]*//g'`
+                               cf_pkg_libs="$cf_temp"
+                       fi
+                       ;;
+               esac
+
+               CF_ADD_CFLAGS($cf_pkg_cflags)
+               CF_ADD_LIBS($cf_pkg_libs)
 
                AC_TRY_LINK([#include <${cf_cv_ncurses_header:-curses.h}>],
                        [initscr(); mousemask(0,0); tgoto((char *)0, 0, 0);],
@@ -3129,6 +3173,17 @@ $1=`echo "$2" | \
                -e 's/-[[UD]]'"$3"'\(=[[^       ]]*\)\?[$]//g'`
 ])dnl
 dnl ---------------------------------------------------------------------------
+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: 11 updated: 2013/09/01 13:02:00
 dnl -------------
 AC_DEFUN([CF_RPATH_HACK],
@@ -3246,7 +3301,32 @@ CF_VERBOSE(...checked $1 [$]$1)
 AC_SUBST(EXTRA_LDFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SIGWINCH version: 2 updated: 2019/03/23 19:54:44
+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_SIGWINCH version: 3 updated: 2020/03/10 18:53:47
 dnl -----------
 dnl Use this macro after CF_XOPEN_SOURCE, but do not require it (not all
 dnl programs need this test).
@@ -3261,7 +3341,7 @@ 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
@@ -3269,7 +3349,7 @@ 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])
 ])
@@ -3291,7 +3371,7 @@ do
 #if SIGWINCH != $cf_sigwinch
 make an error
 #endif
-int x = SIGWINCH],
+int x = SIGWINCH; (void)x],
        [cf_cv_fixup_sigwinch=$cf_sigwinch
         break])
 
@@ -3305,9 +3385,9 @@ 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],
 [
@@ -3327,6 +3407,7 @@ extern $cf_type x;
 $cf_type x;
 static void handler(int sig)
 {
+       (void)sig;
        x = 5;
 }],
                [signal(SIGINT, handler);
@@ -3387,7 +3468,7 @@ AC_MSG_RESULT($cf_cv_sys_time_select)
 test "$cf_cv_sys_time_select" = yes && AC_DEFINE(HAVE_SYS_TIME_SELECT,1,[Define to 1 if we can include <sys/time.h> with <sys/select.h>])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_TERM_HEADER version: 4 updated: 2015/04/15 19:08:48
+dnl CF_TERM_HEADER version: 5 updated: 2020/03/19 20:23:48
 dnl --------------
 dnl Look for term.h, which is part of X/Open curses.  It defines the interface
 dnl to terminfo database.  Usually it is in the same include-path as curses.h,
@@ -3408,7 +3489,7 @@ do
 AC_TRY_COMPILE([#include <stdio.h>
 #include <${cf_cv_ncurses_header:-curses.h}>
 #include <$cf_test>
-],[int x = auto_left_margin],[
+],[int x = auto_left_margin; (void)x],[
        cf_cv_term_header="$cf_test"],[
        cf_cv_term_header=unknown
        ])
@@ -3716,6 +3797,35 @@ if test "$with_dmalloc" = yes ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_WITH_LIB_BASENAME version: 1 updated: 2020/03/07 20:05:14
+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($1)
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_WITH_NCURSES_ETC version: 5 updated: 2016/02/20 19:23:20
 dnl -------------------
 dnl Use this macro for programs which use any variant of "curses", e.g.,
@@ -3873,7 +3983,7 @@ fi
 AC_SUBST(no_x11_rgb)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_XOPEN_CURSES version: 14 updated: 2018/06/20 20:23:13
+dnl CF_XOPEN_CURSES version: 15 updated: 2020/03/19 20:23:48
 dnl ---------------
 dnl Test if we should define X/Open source for curses, needed on Digital Unix
 dnl 4.x, to see the extended functions, but breaks on IRIX 6.x.
@@ -3899,7 +4009,14 @@ AC_TRY_LINK([
 #endif
        long x = winnstr(stdscr, "", 0);
        int x1, y1;
-       getbegyx(stdscr, y1, x1)],
+#ifdef NCURSES_VERSION
+       (void)check2;
+#endif
+       getbegyx(stdscr, y1, x1);
+       (void)x;
+       (void)y1;
+       (void)x1;
+       ],
        [cf_cv_need_xopen_extension=none],
        [
        for cf_try_xopen_extension in _XOPEN_SOURCE_EXTENDED NCURSES_WIDECHAR
@@ -3914,7 +4031,14 @@ AC_TRY_LINK([
 #endif
                long x = winnstr(stdscr, "", 0);
                int x1, y1;
-               getbegyx(stdscr, y1, x1)],
+               getbegyx(stdscr, y1, x1);
+#ifdef NCURSES_VERSION
+               (void)check2;
+#endif
+               (void)x;
+               (void)y1;
+               (void)x1;
+               ],
                [cf_cv_need_xopen_extension=$cf_try_xopen_extension; break])
        done
        ])
@@ -4059,7 +4183,7 @@ fi
 fi # cf_cv_posix_visible
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_X_ATHENA version: 23 updated: 2015/04/12 15:39:00
+dnl CF_X_ATHENA version: 24 updated: 2020/03/10 18:53:47
 dnl -----------
 dnl Check for Xaw (Athena) libraries
 dnl
@@ -4135,7 +4259,8 @@ AC_CACHE_CHECK(for usable $cf_x_athena/Xmu package,cf_cv_xaw_compat,[
 AC_TRY_LINK([
 #include <X11/Xmu/CharSet.h>
 ],[
-int check = XmuCompareISOLatin1("big", "small")
+int check = XmuCompareISOLatin1("big", "small");
+(void)check;
 ],[cf_cv_xaw_compat=yes],[cf_cv_xaw_compat=no])])
 
                        if test "$cf_cv_xaw_compat" = no
@@ -4171,12 +4296,13 @@ if test -z "$cf_x_athena_lib" ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_X_ATHENA_CPPFLAGS version: 6 updated: 2018/06/20 20:23:13
+dnl CF_X_ATHENA_CPPFLAGS version: 8 updated: 2020/01/16 05:21:56
 dnl --------------------
 dnl Normally invoked by CF_X_ATHENA, with $1 set to the appropriate flavor of
 dnl the Athena widgets, e.g., Xaw, Xaw3d, neXtaw.
 AC_DEFUN([CF_X_ATHENA_CPPFLAGS],
 [
+AC_REQUIRE([AC_PATH_XTRA])
 cf_x_athena_root=ifelse([$1],,Xaw,[$1])
 cf_x_athena_inc=""
 
@@ -4187,10 +4313,9 @@ for cf_path in default \
        /usr/local
 do
        if test -z "$cf_x_athena_inc" ; then
-               cf_save="$CPPFLAGS"
+               CF_SAVE_XTRA_FLAGS([CF_X_ATHENA_CPPFLAGS])
                cf_test=X11/$cf_x_athena_root/SimpleMenu.h
                if test $cf_path != default ; then
-                       CPPFLAGS="$cf_save"
                        CF_APPEND_TEXT(CPPFLAGS,-I$cf_path/include)
                        AC_MSG_CHECKING(for $cf_test in $cf_path)
                else
@@ -4202,24 +4327,23 @@ do
                        [cf_result=yes],
                        [cf_result=no])
                AC_MSG_RESULT($cf_result)
+               CF_RESTORE_XTRA_FLAGS([CF_X_ATHENA_CPPFLAGS])
                if test "$cf_result" = yes ; then
-                       cf_x_athena_inc=$cf_path
+                       test "$cf_path"  = default && cf_x_athena_inc=default
+                       test "$cf_path" != default && cf_x_athena_inc=$cf_path/include
                        break
-               else
-                       CPPFLAGS="$cf_save"
                fi
        fi
 done
 
 if test -z "$cf_x_athena_inc" ; then
-       AC_MSG_WARN(
-[Unable to successfully find Athena header files with test program])
+       AC_MSG_WARN([Unable to find Athena header files])
 elif test "$cf_x_athena_inc" != default ; then
        CF_APPEND_TEXT(CPPFLAGS,-I$cf_x_athena_inc)
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_X_ATHENA_LIBS version: 12 updated: 2011/07/17 19:55:02
+dnl CF_X_ATHENA_LIBS version: 13 updated: 2020/01/11 18:16:10
 dnl ----------------
 dnl Normally invoked by CF_X_ATHENA, with $1 set to the appropriate flavor of
 dnl the Athena widgets, e.g., Xaw, Xaw3d, neXtaw.
@@ -4244,29 +4368,26 @@ do
                "-l$cf_lib -lXpm -lXmu" \
                "-l${cf_lib}_s -lXmu_s"
        do
-               if test -z "$cf_x_athena_lib" ; then
-                       cf_save="$LIBS"
-                       cf_test=XawSimpleMenuAddGlobalActions
-                       if test $cf_path != default ; then
-                               CF_ADD_LIBS(-L$cf_path/lib $cf_libs)
-                               AC_MSG_CHECKING(for $cf_libs in $cf_path)
-                       else
-                               CF_ADD_LIBS($cf_libs)
-                               AC_MSG_CHECKING(for $cf_test in $cf_libs)
-                       fi
-                       AC_TRY_LINK([
+               test -n "$cf_x_athena_lib" && break
+
+               CF_SAVE_XTRA_FLAGS([CF_X_ATHENA_LIBS])
+               cf_test=XawSimpleMenuAddGlobalActions
+               test "$cf_path" != default && cf_libs="-L$cf_path/lib $cf_libs"
+               CF_ADD_LIBS($cf_libs)
+               AC_MSG_CHECKING(for $cf_test in $cf_libs)
+               AC_TRY_LINK([
 #include <X11/Intrinsic.h>
 #include <X11/$cf_x_athena_root/SimpleMenu.h>
 ],[
 $cf_test((XtAppContext) 0)],
-                               [cf_result=yes],
-                               [cf_result=no])
-                       AC_MSG_RESULT($cf_result)
-                       if test "$cf_result" = yes ; then
-                               cf_x_athena_lib="$cf_libs"
-                               break
-                       fi
-                       LIBS="$cf_save"
+                       [cf_result=yes],
+                       [cf_result=no])
+               AC_MSG_RESULT($cf_result)
+               CF_RESTORE_XTRA_FLAGS([CF_X_ATHENA_LIBS])
+
+               if test "$cf_result" = yes ; then
+                       cf_x_athena_lib="$cf_libs"
+                       break
                fi
        done # cf_libs
                test -n "$cf_x_athena_lib" && break
@@ -4278,6 +4399,7 @@ if test -z "$cf_x_athena_lib" ; then
 [Unable to successfully link Athena library (-l$cf_x_athena_root) with test program])
 fi
 
+CF_ADD_LIBS($cf_x_athena_lib)
 CF_UPPER(cf_x_athena_LIBS,HAVE_LIB_$cf_x_athena)
 AC_DEFINE_UNQUOTED($cf_x_athena_LIBS)
 ])
@@ -4290,7 +4412,7 @@ CF_TRY_PKG_CONFIG(Xext,,[
                [CF_ADD_LIB(Xext)])])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_X_TOOLKIT version: 24 updated: 2019/03/23 19:54:44
+dnl CF_X_TOOLKIT version: 25 updated: 2020/03/10 17:26:15
 dnl ------------
 dnl Check for X Toolkit libraries
 AC_DEFUN([CF_X_TOOLKIT],
@@ -4310,6 +4432,8 @@ then
        CF_TRY_PKG_CONFIG(ice,,[AC_MSG_WARN(unable to find ICE library)])
        CF_TRY_PKG_CONFIG(sm,,[AC_MSG_WARN(unable to find SM library)])
        CF_TRY_PKG_CONFIG(xt,,[AC_MSG_WARN(unable to find Xt library)])
+else
+       LIBS="$X_PRE_LIBS $LIBS $X_EXTRA_LIBS"
 fi
 
 cf_have_X_LIBS=no
@@ -4342,7 +4466,7 @@ AC_TRY_LINK([
 AC_CACHE_CHECK(for usable X Toolkit package,cf_cv_xt_ice_compat,[
 AC_TRY_LINK([
 #include <X11/Shell.h>
-],[int num = IceConnectionNumber(0)
+],[int num = IceConnectionNumber(0); (void) num
 ],[cf_cv_xt_ice_compat=yes],[cf_cv_xt_ice_compat=no])])
 
        if test "$cf_cv_xt_ice_compat" = no
@@ -4372,15 +4496,13 @@ AC_TRY_LINK([
 
        AC_CHECK_FUNC(XOpenDisplay,,[
        AC_CHECK_LIB(X11,XOpenDisplay,
-               [CF_ADD_LIB(X11)],,
-               [$X_PRE_LIBS $LIBS $X_EXTRA_LIBS])])
+               [CF_ADD_LIB(X11)])])
 
        AC_CHECK_FUNC(XtAppInitialize,,[
        AC_CHECK_LIB(Xt, XtAppInitialize,
                [AC_DEFINE(HAVE_LIBXT,1,[Define to 1 if we can compile with the Xt library])
                 cf_have_X_LIBS=Xt
-                LIBS="-lXt $X_PRE_LIBS $LIBS $X_EXTRA_LIBS"],,
-               [$X_PRE_LIBS $LIBS $X_EXTRA_LIBS])])
+                LIBS="-lXt $LIBS"])])
 ])
 
 if test $cf_have_X_LIBS = no ; then
@@ -4391,6 +4513,24 @@ to makefile.])
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF__CURSES_DATA version: 2 updated: 2020/02/08 21:00:26
+dnl ---------------
+dnl Attempt to make a copy of a curses data item.  This is needed in the
+dnl check-data configure tests when using ncurses, because the symbol may be
+dnl actually a function return-value.  That could happen if the linker is
+dnl broken (does not resolve data-only references), or if ncurses is configured
+dnl to support re-entrant code.
+dnl $1 = target
+dnl $2 = source
+define([CF__CURSES_DATA],[
+#if defined($2) && ((defined(NCURSES_WRAPPED_VAR) && (NCURSES_VERSION_PATCH < 20200208)) || defined(NCURSES_BROKEN_LINKER) || defined(NCURSES_REENTRANT))
+       const void *$1 = (const void *)($2);
+#else
+       const void *$1 = &($2);
+#endif
+       fprintf(stderr, "testing linkage of $2:%p\n", (const void *)$1);
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF__CURSES_HEAD version: 2 updated: 2010/10/23 15:54:49
 dnl ---------------
 dnl Define a reusable chunk which includes <curses.h> and <term.h> when they