ncurses 6.1 - patch 20190209
[ncurses.git] / configure.in
index 7e167fa5f2d0b91ea8a42f034f74307983e6bff7..609a95217cd180eb4c6ac68ec92a290ec1646b21 100644 (file)
@@ -1,5 +1,5 @@
 dnl***************************************************************************
-dnl Copyright (c) 1998-2011,2012 Free Software Foundation, Inc.              *
+dnl Copyright (c) 1998-2018,2019 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            *
@@ -28,45 +28,51 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: configure.in,v 1.545 2012/02/25 11:32:40 tom Exp $
+dnl $Id: configure.in,v 1.677 2019/02/02 19:57:53 tom Exp $
 dnl Process this file with autoconf to produce a configure script.
 dnl
-dnl See http://invisible-island.net/autoconf/ for additional information.
+dnl See https://invisible-island.net/autoconf/ for additional information.
 dnl
 dnl ---------------------------------------------------------------------------
-AC_PREREQ(2.13.20020210)
-AC_REVISION($Revision: 1.545 $)
+AC_PREREQ(2.52.20170501)
+AC_REVISION($Revision: 1.677 $)
 AC_INIT(ncurses/base/lib_initscr.c)
 AC_CONFIG_HEADER(include/ncurses_cfg.h:include/ncurses_cfg.hin)
 
 CF_TOP_BUILDDIR
 CF_SUBST_NCURSES_VERSION
+CF_VERSION_INFO(NCURSES,ncurses)
 
 CF_WITH_REL_VERSION(NCURSES)
-CF_WITH_ABI_VERSION
+CF_NCURSES_WITH_ABI_VERSION
 
-CF_CHECK_CACHE([AC_CANONICAL_SYSTEM])
-AC_ARG_WITH(system-type,
-[  --with-system-type=XXX  test: override derived host system-type],
-[AC_MSG_WARN(overriding system type to $withval)
- cf_cv_system_name=$withval])
+CF_WITH_SYSTYPE
 
 ###    Save the given $CFLAGS to allow user-override.
 cf_user_CFLAGS="$CFLAGS"
 
 ###    Default install-location
 CF_CFG_DEFAULTS
+### Defaults for ncurses ABI
+CF_ABI_DEFAULTS
 
 ###    Checks for programs.
-AC_PROG_CC
-CF_GCC_VERSION
+AC_ARG_WITH(ada,
+       [  --without-ada           suppress check for Ada95, don't build demo],
+       [cf_with_ada=$withval],
+       [cf_with_ada=yes])
+
+if test "x$cf_with_ada" = xyes
+then
+       cf_prog_cc="gnatgcc gcc cc"
+else
+       cf_prog_cc="gcc cc"
+fi
+CF_PROG_CC($cf_prog_cc)
 
 AC_PROG_CPP
 AC_PROG_GCC_TRADITIONAL
-CF_PROG_CC_C_O(CC)
-AC_ISC_POSIX
-CF_ANSI_CC_REQD
-CF_PROG_EXT
+CF_PROG_CC_C_O(CC,[$CFLAGS $CPPFLAGS])
 CF_PROG_LDCONFIG
 
 dnl DEFECT in autoconf 2.12:   an attempt to set policy, this breaks the
@@ -89,19 +95,52 @@ else
                cf_with_cxx=no; CXX=""; GXX="";])dnl
        AC_PROG_CXX
        popdef([AC_MSG_ERROR])dnl
-       # autoconf 2.5x removed the error - by hardcoding it to g++.
+
+       AC_LANG_PUSH(C++)
+       if test "x$cf_with_cxx" != xno
+       then
+               # Several of the C++ configurations do not work, particularly when
+               # cross-compiling (20140913 -TD)
+               AC_MSG_CHECKING(if $CXX works)
+
+               save_CPPFLAGS="$CPPFLAGS"
+               eval cf_includedir=${includedir}
+               CPPFLAGS="$CPPFLAGS -I${cf_includedir}"
+               AC_TRY_COMPILE([
+#include <stdlib.h>
+#include <stdio.h>
+],
+               [
+               printf("Hello world!\n")
+               ],
+               [cf_cxx_works=yes],
+               [cf_cxx_works=no])
+               CPPFLAGS="$save_CPPFLAGS"
+
+               AC_MSG_RESULT($cf_cxx_works)
+               if test "x$cf_cxx_works" = xno
+               then
+                       AC_MSG_WARN([Ignore $CXX, since it cannot compile hello-world.])
+                       cf_with_cxx=no; CXX=""; GXX="";
+               fi
+       fi
+       AC_LANG_POP
+
+       # autoconf 2.5x removed the error (hardcoding it to g++, or just blank)
        if test "$CXX" = "g++" ; then
                AC_PATH_PROG(CXX,g++)
        fi
-       if test "$CXX" = "g++" ; then
-               AC_MSG_WARN(ignoring hardcoded g++)
+       case "x$CXX" in
+       (x|xg++)
+               AC_MSG_WARN([You don't have any C++ compiler, too bad])
                cf_with_cxx=no; CXX=""; GXX="";
-       fi
+               ;;
+       esac
 fi
 
 CF_GXX_VERSION
 case $GXX_VERSION in
-1*|2.[[0-6]]*)
+(1*|2.[[0-6]]*)
        # GXX=""; CXX=""; ac_cv_prog_gxx=no
        # cf_cxx_library=no
        AC_MSG_WARN(templates do not work)
@@ -116,12 +155,15 @@ AC_ARG_WITH(cxx-binding,
 AC_MSG_RESULT($cf_with_cxx_binding)
 
 AC_MSG_CHECKING(if you want to build with Ada95)
-AC_ARG_WITH(ada,
-       [  --without-ada           suppress check for Ada95, don't build demo],
-       [cf_with_ada=$withval],
-       [cf_with_ada=yes])
 AC_MSG_RESULT($cf_with_ada)
 
+AC_MSG_CHECKING(if you want to install terminal database)
+AC_ARG_ENABLE(db-install,
+       [  --disable-db-install    suppress install of terminal database],
+       [cf_with_db_install=$enableval],
+       [cf_with_db_install=yes])
+AC_MSG_RESULT($cf_with_db_install)
+
 AC_MSG_CHECKING(if you want to install manpages)
 AC_ARG_WITH(manpages,
        [  --without-manpages      suppress install of manpages],
@@ -131,14 +173,30 @@ AC_MSG_RESULT($cf_with_manpages)
 
 AC_MSG_CHECKING(if you want to build programs such as tic)
 AC_ARG_WITH(progs,
-       [  --without-progs         suppress build with programs (e.g., tic)],
+       [  --without-progs         suppress build/install with programs (e.g., tic)],
        [cf_with_progs=$withval],
        [cf_with_progs=yes])
 AC_MSG_RESULT($cf_with_progs)
 
+if test -f $srcdir/tack/tack.h; then
+       if test "x$cross_compiling" = xyes ; then
+               CF_VERBOSE(ignoring tack because we are cross-compiling)
+               cf_with_tack=no
+       else
+               AC_MSG_CHECKING(if you want to build the tack program)
+               AC_ARG_WITH(tack,
+                       [  --without-tack          suppress build/install with tack program],
+                       [cf_with_tack=$withval],
+                       [cf_with_tack=$cf_with_progs])
+               AC_MSG_RESULT($cf_with_tack)
+       fi
+else
+       cf_with_tack=no
+fi
+
 AC_MSG_CHECKING(if you want to build test-programs)
 AC_ARG_WITH(tests,
-       [  --without-tests         suppress build with test-programs],
+       [  --without-tests         suppress build/install with test-programs],
        [cf_with_tests=$withval],
        [cf_with_tests=yes])
 AC_MSG_RESULT($cf_with_tests)
@@ -151,9 +209,8 @@ AC_ARG_WITH(curses-h,
 AC_MSG_RESULT($with_curses_h)
 
 modules_to_build="ncurses"
-if test "X$cf_with_progs" != Xno ; then
-modules_to_build="$modules_to_build progs tack"
-fi
+test "X$cf_with_progs" != Xno && modules_to_build="$modules_to_build progs"
+test "X$cf_with_tack"  != Xno && modules_to_build="$modules_to_build tack"
 modules_to_build="$modules_to_build panel menu form"
 
 AC_ARG_PROGRAM
@@ -166,10 +223,41 @@ CF_PROG_LN_S
 
 AC_SYS_LONG_FILE_NAMES
 
-# if we find pkg-config, check if we should install the ".pc" files.
+# Provide for renaming "ncurses5-config" to "ncurses5X-config", etc., in case
+# of package conflict.
+cf_config_suffix=
+AC_ARG_WITH(config-suffix,
+       [  --with-config-suffix=X  suffixes ncursesXX-config file],
+       [case "x$withval" in
+       (xyes|xno)
+               AC_MSG_WARN(expected a value for config-suffix option)
+               ;;
+       (*)     cf_config_suffix="$withval"
+               ;;
+       esac])
+AC_SUBST(cf_config_suffix)
+
+# If we find pkg-config, check if we should install the ".pc" files.
 CF_PKG_CONFIG
 CF_WITH_PKG_CONFIG_LIBDIR
 CF_ENABLE_PC_FILES
+if test -z "$MAKE_PC_FILES"
+then
+       AC_MSG_CHECKING(for suffix to add to pc-files)
+AC_ARG_WITH(pc-suffix,
+       [  --with-pc-suffix        suffixes pc-files],
+       [case "x$withval" in
+       (xyes|xno)
+               PC_MODULE_SUFFIX=
+               ;;
+       (*)     PC_MODULE_SUFFIX="$withval"
+               ;;
+       esac])
+       test -z "$PC_MODULE_SUFFIX" && PC_MODULE_SUFFIX=none
+       AC_MSG_RESULT($PC_MODULE_SUFFIX)
+       test "$PC_MODULE_SUFFIX" = none && PC_MODULE_SUFFIX=
+       AC_SUBST(PC_MODULE_SUFFIX)
+fi
 
 AC_MSG_CHECKING(if we should assume mixed-case filenames)
 AC_ARG_ENABLE(mixed-case,
@@ -178,12 +266,12 @@ AC_ARG_ENABLE(mixed-case,
        [enable_mixedcase=auto])
 AC_MSG_RESULT($enable_mixedcase)
 if test "$enable_mixedcase" = "auto" ; then
-    CF_MIXEDCASE_FILENAMES
+       CF_MIXEDCASE_FILENAMES
 else
-    cf_cv_mixedcase=$enable_mixedcase
-    if test "$enable_mixedcase" = "yes" ; then
-        AC_DEFINE(MIXEDCASE_FILENAMES)
-    fi
+       cf_cv_mixedcase=$enable_mixedcase
+       if test "x$enable_mixedcase" = "xyes" ; then
+               AC_DEFINE(MIXEDCASE_FILENAMES,1,[Define to 1 if tic should assume mixed-case filenames])
+       fi
 fi
 
 # do this after mixed-case option (tags/TAGS is not as important as tic).
@@ -195,6 +283,7 @@ dnl These are standard among *NIX systems, but not when cross-compiling
 AC_CHECK_TOOL(RANLIB, ranlib, ':')
 AC_CHECK_TOOL(LD, ld, ld)
 AC_CHECK_TOOL(AR, ar, ar)
+AC_CHECK_TOOL(NM, nm, nm)
 CF_AR_FLAGS
 
 dnl Special option for use by system-builders: the install-prefix is used to
@@ -203,10 +292,10 @@ dnl archive can be built without modifying the host system's configuration.
 AC_MSG_CHECKING(if you have specified an install-prefix)
 AC_ARG_WITH(install-prefix,
        [  --with-install-prefix   prefixes actual install-location ($DESTDIR)],
-       [case "$withval" in #(vi
-       yes|no) #(vi
+       [case "x$withval" in
+       (xyes|xno)
                ;;
-       *)      DESTDIR="$withval"
+       (*)     DESTDIR="$withval"
                ;;
        esac])
 AC_MSG_RESULT($DESTDIR)
@@ -241,7 +330,7 @@ AC_ARG_WITH(shared,
        [with_shared=$withval],
        [with_shared=no])
 AC_MSG_RESULT($with_shared)
-test "$with_shared" = "yes" && cf_list_models="$cf_list_models shared"
+test "x$with_shared" = "xyes" && cf_list_models="$cf_list_models shared"
 
 AC_MSG_CHECKING(if you want to build static libraries)
 AC_ARG_WITH(normal,
@@ -249,7 +338,7 @@ AC_ARG_WITH(normal,
        [with_normal=$withval],
        [with_normal=yes])
 AC_MSG_RESULT($with_normal)
-test "$with_normal" = "yes" && cf_list_models="$cf_list_models normal"
+test "x$with_normal" = "xyes" && cf_list_models="$cf_list_models normal"
 
 AC_MSG_CHECKING(if you want to build debug libraries)
 AC_ARG_WITH(debug,
@@ -257,7 +346,7 @@ AC_ARG_WITH(debug,
        [with_debug=$withval],
        [with_debug=yes])
 AC_MSG_RESULT($with_debug)
-test "$with_debug" = "yes" && cf_list_models="$cf_list_models debug"
+test "x$with_debug" = "xyes" && cf_list_models="$cf_list_models debug"
 
 AC_MSG_CHECKING(if you want to build profiling libraries)
 AC_ARG_WITH(profile,
@@ -265,10 +354,21 @@ AC_ARG_WITH(profile,
        [with_profile=$withval],
        [with_profile=no])
 AC_MSG_RESULT($with_profile)
-test "$with_profile" = "yes" && cf_list_models="$cf_list_models profile"
+test "x$with_profile" = "xyes" && cf_list_models="$cf_list_models profile"
 
 fi
 
+if test "X$cf_with_cxx_binding" != Xno; then
+if test "x$with_shared" = "xyes"; then
+AC_MSG_CHECKING(if you want to build C++ shared libraries)
+AC_ARG_WITH(cxx-shared,
+       [  --with-cxx-shared       generate C++ shared-libraries],
+       [with_shared_cxx=$withval],
+       [with_shared_cxx=no])
+AC_MSG_RESULT($with_shared_cxx)
+fi
+fi
+
 ###############################################################################
 
 AC_MSG_CHECKING(for specified models)
@@ -305,6 +405,7 @@ CF_WITH_LIB_PREFIX(cf_prefix)
 
 LIB_SUFFIX=
 AC_SUBST(LIB_SUFFIX)
+CF_PATHSEP
 
 ###############################################################################
 
@@ -322,63 +423,33 @@ AC_ARG_WITH(ticlib,
        [with_ticlib=no])
 AC_MSG_RESULT($with_ticlib)
 
-### Checks for special libraries, must be done up-front.
-SHLIB_LIST=""
-CF_WITH_GPM
-if test "$with_gpm" != no ; then
-       AC_MSG_CHECKING(if you want to load GPM dynamically)
-       AC_ARG_WITH(dlsym,
-               [  --without-dlsym         do not use dlsym() to load GPM dynamically],
-               [with_dlsym=$withval],
-               [with_dlsym=yes])
-       AC_MSG_RESULT($with_dlsym)
-       if test "$with_dlsym" = yes ; then
-               CF_FUNC_DLSYM
-               if test "$with_gpm" != yes ; then
-                       CF_VERBOSE(assuming soname for gpm is $with_gpm)
-                       cf_cv_gpm_soname="$with_gpm"
-               else
-                       CF_LIB_SONAME([#include <gpm.h>],[if (Gpm_Open(0,0)) Gpm_Close();],gpm)
-               fi
-               test "$cf_cv_gpm_soname" != "unknown" && AC_DEFINE_UNQUOTED(LIBGPM_SONAME,"$cf_cv_gpm_soname")
-               SHLIB_LIST="-ldl $SHLIB_LIST"
-       else
-               SHLIB_LIST="-lgpm $SHLIB_LIST"
-               CF_ADD_LIB(gpm,TEST_LIBS)
-       fi
-       AC_DEFINE(HAVE_LIBGPM)
-       CF_CHECK_GPM_WGETCH
-fi
-
-CF_WITH_SYSMOUSE
-
 dnl Not all ports of gcc support the -g option
 
 if test X"$CC_G_OPT" = X"" ; then
        CC_G_OPT='-g'
-       test -n "$GCC" && test "${ac_cv_prog_cc_g}" != yes && CC_G_OPT=''
+       test -n "$GCC" && test "x${ac_cv_prog_cc_g}" != xyes && CC_G_OPT=''
 fi
 AC_SUBST(CC_G_OPT)
 
 if test X"$CXX_G_OPT" = X"" ; then
        CXX_G_OPT='-g'
-       test -n "$GXX" && test "${ac_cv_prog_cxx_g}" != yes && CXX_G_OPT=''
+       test -n "$GXX" && test "x${ac_cv_prog_cxx_g}" != xyes && CXX_G_OPT=''
 fi
 AC_SUBST(CXX_G_OPT)
 
 AC_MSG_CHECKING(for default loader flags)
 case $DFT_LWR_MODEL in
-libtool) LD_MODEL=''   ;;
-normal)  LD_MODEL=''   ;;
-debug)   LD_MODEL=$CC_G_OPT ;;
-profile) LD_MODEL='-pg';;
-shared)  LD_MODEL=''   ;;
+(libtool) LD_MODEL=''   ;;
+(normal)  LD_MODEL=''   ;;
+(debug)   LD_MODEL=$CC_G_OPT ;;
+(profile) LD_MODEL='-pg';;
+(shared)  LD_MODEL=''   ;;
 esac
 AC_SUBST(LD_MODEL)dnl          the type of link (e.g., -g or -pg)
 AC_MSG_RESULT($LD_MODEL)
 
 case $DFT_LWR_MODEL in
-shared)
+(shared)
 CF_ENABLE_RPATH
 AC_MSG_CHECKING(if shared libraries should be relinked during install)
 AC_ARG_ENABLE(relink,
@@ -389,27 +460,110 @@ AC_MSG_RESULT($cf_cv_do_relink)
        ;;
 esac
 
+# we will build libraries one-level down.
+rel_builddir=..
 CF_SHARED_OPTS
-if test "$CC_SHARED_OPTS" = "unknown"; then
-       for model in $cf_list_models; do
-               if test "$model" = "shared"; then
+for model in $cf_list_models; do
+       case $model in
+       (libtool)
+               CF_WITH_LIBTOOL_OPTS
+               CF_WITH_EXPORT_SYMS
+               ;;
+       (shared)
+               if test "$CC_SHARED_OPTS" = "unknown"; then
                        AC_ERROR(Shared libraries are not supported in this version)
                fi
-       done
+               # workaround for inept transition to PIE vs PIC...
+               AC_MSG_CHECKING(if current CFLAGS link properly)
+               AC_TRY_LINK(
+                       [#include <stdio.h>],
+                       [printf("Hello work\n");],
+                       [cf_cflags_work=yes],
+                       [cf_cflags_work=no])
+               AC_MSG_RESULT($cf_cflags_work)
+               if test "$cf_cflags_work" = no
+               then
+                       CF_VERBOSE(try to work around by appending shared-options)
+                       CFLAGS="$CFLAGS $CC_SHARED_OPTS"
+               fi
+               CF_WITH_VERSIONED_SYMS
+               ;;
+       esac
+done
+
+### Checks for special libraries, must be done up-front.
+SHLIB_LIST=""
+CF_WITH_GPM
+if test "$with_gpm" != no ; then
+       AC_MSG_CHECKING(if you want to load GPM dynamically)
+       AC_ARG_WITH(dlsym,
+               [  --without-dlsym         do not use dlsym() to load GPM dynamically],
+               [with_dlsym=$withval],
+               [with_dlsym=yes])
+       AC_MSG_RESULT($with_dlsym)
+       if test "x$with_dlsym" = xyes ; then
+               CF_FUNC_DLSYM
+               if test "x$with_gpm" != xyes ; then
+                       CF_VERBOSE(assuming soname for gpm is $with_gpm)
+                       cf_cv_gpm_soname="$with_gpm"
+               else
+                       CF_LIB_SONAME([#include <gpm.h>],[if (Gpm_Open(0,0)) Gpm_Close();],gpm)
+               fi
+               test "$cf_cv_gpm_soname" != "unknown" && AC_DEFINE_UNQUOTED(LIBGPM_SONAME,"$cf_cv_gpm_soname",[Define as needed to set the gpm share library soname])
+               SHLIB_LIST="-ldl $SHLIB_LIST"
+               CF_ADD_LIB(dl,PRIVATE_LIBS)
+       else
+               SHLIB_LIST="-lgpm $SHLIB_LIST"
+               CF_ADD_LIB(gpm,TEST_LIBS)
+               CF_ADD_LIB(gpm,PRIVATE_LIBS)
+       fi
+       AC_DEFINE(HAVE_LIBGPM,1,[Define to 1 if we have the gpm library])
+       CF_CHECK_GPM_WGETCH
 fi
 
+CF_WITH_PCRE2
+CF_WITH_SYSMOUSE
+
+# pretend that ncurses==ncursesw==ncursest
+AC_MSG_CHECKING(if you want to disable library suffixes)
+CF_ARG_DISABLE(lib-suffixes,
+       [  --disable-lib-suffixes  disable library suffixes],
+       [disable_lib_suffixes=yes],
+       [disable_lib_suffixes=no],
+       no)
+AC_MSG_RESULT($disable_lib_suffixes)
+
 ### If we're building with rpath, try to link non-standard libs that way too.
-if test "$DFT_LWR_MODEL" = "shared"; then
+if test "$DFT_LWR_MODEL" = "shared" && test "x$cf_cv_enable_rpath" != xno; then
        CF_DISABLE_RPATH_HACK
 fi
 
 ###############################################################################
 CF_HELP_MESSAGE(Fine-Tuning Your Configuration:)
 
+###    use option --with-extra-suffix to append suffix to headers and libraries
+AC_MSG_CHECKING(if you wish to append extra suffix to header/library paths)
+EXTRA_SUFFIX=
+AC_ARG_WITH(extra-suffix,
+       [  --with-extra-suffix=X   append extra suffix to header/library paths],
+       [case x$withval in
+       (no)
+               ;;
+       (xyes|x)
+               EXTRA_SUFFIX=$cf_cv_abi_version
+               ;;
+       (*)
+               EXTRA_SUFFIX=$withval
+               ;;
+       esac
+       ])
+AC_MSG_RESULT($EXTRA_SUFFIX)
+AC_SUBST(EXTRA_SUFFIX)
+
 ###    use option --disable-overwrite to leave out the link to -lcurses
 AC_MSG_CHECKING(if you wish to install ncurses overwriting curses)
 AC_ARG_ENABLE(overwrite,
-       [  --disable-overwrite     leave out the link to -lcurses],
+       [  --disable-overwrite     put headers in subdir, omit link to -lcurses],
        [with_overwrite=$enableval],
        [if test "$prefix" = "/usr" ; then with_overwrite=yes; else with_overwrite=no; fi])
 AC_MSG_RESULT($with_overwrite)
@@ -421,18 +575,19 @@ AC_ARG_ENABLE(database,
        [use_database=yes])
 AC_MSG_RESULT($use_database)
 
-case $host_os in #(vi
-os2*) #(vi
+case $host_os in
+(os2*)
        TERMINFO_SRC='${top_srcdir}/misc/emx.src'
        ;;
-*) #(vi
+(*)
        TERMINFO_SRC='${top_srcdir}/misc/terminfo.src'
        ;;
 esac
 AC_SUBST(TERMINFO_SRC)
 
+NCURSES_USE_DATABASE=0
 if test "$use_database" != no ; then
-       AC_DEFINE(USE_DATABASE)
+       NCURSES_USE_DATABASE=1
 
        AC_MSG_CHECKING(which terminfo source-file will be installed)
        AC_ARG_WITH(database,
@@ -448,6 +603,7 @@ if test "$use_database" != no ; then
 else
        with_hashed_db=no
 fi
+AC_SUBST(NCURSES_USE_DATABASE)
 
 AC_MSG_CHECKING(for list of fallback descriptions)
 AC_ARG_WITH(fallbacks,
@@ -455,8 +611,23 @@ AC_ARG_WITH(fallbacks,
        [with_fallback=$withval],
        [with_fallback=])
 AC_MSG_RESULT($with_fallback)
-FALLBACK_LIST=`echo "$with_fallback" | sed -e 's/,/ /g'`
+
+case ".$with_fallback" in
+(.|.no)
+       FALLBACK_LIST=
+       ;;
+(.yes)
+       AC_MSG_WARN(expected a list of terminal descriptions)
+       ;;
+(*)
+       FALLBACK_LIST=`echo "$with_fallback" | sed -e 's/,/ /g'`
+       ;;
+esac
+
+USE_FALLBACKS=
+test -z "$FALLBACK_LIST" && USE_FALLBACKS="#"
 AC_SUBST(FALLBACK_LIST)
+AC_SUBST(USE_FALLBACKS)
 
 AC_MSG_CHECKING(if you want modern xterm or antique)
 AC_ARG_WITH(xterm-new,
@@ -464,8 +635,8 @@ AC_ARG_WITH(xterm-new,
        [with_xterm_new=$withval],
        [with_xterm_new=yes])
 case $with_xterm_new in
-no)    with_xterm_new=xterm-old;;
-*)     with_xterm_new=xterm-new;;
+(no) with_xterm_new=xterm-old;;
+(*)     with_xterm_new=xterm-new;;
 esac
 AC_MSG_RESULT($with_xterm_new)
 WHICH_XTERM=$with_xterm_new
@@ -473,17 +644,17 @@ AC_SUBST(WHICH_XTERM)
 
 AC_MSG_CHECKING(if xterm backspace sends BS or DEL)
 AC_ARG_WITH(xterm-kbs,
-       [  --with-xterm-kbs=XXX     specify if xterm backspace sends BS or DEL],
+       [  --with-xterm-kbs=XXX    specify if xterm backspace sends BS or DEL],
        [with_xterm_kbs=$withval],
        [with_xterm_kbs=BS])
 case x$with_xterm_kbs in
-xyes|xno|xBS|xbs|x8)
+(xyes|xno|xBS|xbs|x8)
        with_xterm_kbs=BS
        ;;
-xDEL|xdel|x127)
+(xDEL|xdel|x127)
        with_xterm_kbs=DEL
        ;;
-*)
+(*)
        with_xterm_kbs=$withval
        ;;
 esac
@@ -504,7 +675,14 @@ CF_WITH_PATHLIST(terminfo-dirs,
        DATADIR/terminfo,
        ${datadir}/terminfo)
 AC_MSG_RESULT($TERMINFO_DIRS)
-test -n "$TERMINFO_DIRS" && AC_DEFINE_UNQUOTED(TERMINFO_DIRS,"$TERMINFO_DIRS")
+test -n "$TERMINFO_DIRS" && AC_DEFINE_UNQUOTED(TERMINFO_DIRS,"$TERMINFO_DIRS",[Define as needed to predefine the TERMINFO_DIR searchlist])
+
+case "x$TERMINFO" in
+x???:*)
+       AC_MSG_WARN(ignoring non-directory/file TERMINFO value)
+       unset TERMINFO
+       ;;
+esac
 
 AC_MSG_CHECKING(for default terminfo directory)
 CF_WITH_PATH(default-terminfo-dir,
@@ -513,7 +691,7 @@ CF_WITH_PATH(default-terminfo-dir,
        DATADIR/terminfo,
        ${datadir}/terminfo)
 AC_MSG_RESULT($TERMINFO)
-AC_DEFINE_UNQUOTED(TERMINFO,"$TERMINFO")
+AC_DEFINE_UNQUOTED(TERMINFO,"$TERMINFO",[Define to set the default terminal database path])
 
 fi
 
@@ -540,7 +718,7 @@ int main() {
        [with_big_core=no],
        [with_big_core=no])])
 AC_MSG_RESULT($with_big_core)
-test "$with_big_core" = "yes" && AC_DEFINE(HAVE_BIG_CORE)
+test "x$with_big_core" = "xyes" && AC_DEFINE(HAVE_BIG_CORE,1,[Define to 1 if machine has ample memory for tic])
 
 ### ISO C only guarantees 512-char strings, we have tables which load faster
 ### when constructed using "big" strings.  More than the C compiler, the awk
@@ -553,7 +731,7 @@ AC_ARG_ENABLE(big-strings,
 AC_MSG_RESULT($with_big_strings)
 
 USE_BIG_STRINGS=0
-test "$with_big_strings" = "yes" && USE_BIG_STRINGS=1
+test "x$with_big_strings" = "xyes" && USE_BIG_STRINGS=1
 AC_SUBST(USE_BIG_STRINGS)
 
 ###    use option --enable-termcap to compile in the termcap fallback support
@@ -564,46 +742,48 @@ AC_ARG_ENABLE(termcap,
        [with_termcap=no])
 AC_MSG_RESULT($with_termcap)
 
-if test "$with_termcap" != "yes" ; then
+NCURSES_USE_TERMCAP=0
+if test "x$with_termcap" != "xyes" ; then
        if test "$use_database" = no ; then
                if test -z "$with_fallback" ; then
                        AC_ERROR(You have disabled the database w/o specifying fallbacks)
                fi
        fi
-       AC_DEFINE(PURE_TERMINFO)
+       AC_DEFINE(PURE_TERMINFO,1,[Define to 1 if we should support only terminfo])
 else
 
-if test "$with_ticlib" != no ; then
-       AC_ERROR(Options --with-ticlib and --enable-termcap cannot be combined)
-fi
-
-AC_DEFINE(USE_TERMCAP)
-AC_MSG_CHECKING(for list of termcap files)
-CF_WITH_PATHLIST(termpath,
-       [  --with-termpath=XXX     specify list of termcap files],
-       TERMPATH,
-       /etc/termcap:/usr/share/misc/termcap)
-AC_MSG_RESULT($TERMPATH)
-test -n "$TERMPATH" && AC_DEFINE_UNQUOTED(TERMPATH,"$TERMPATH")
-
-###    use option --enable-getcap to use a hacked getcap for reading termcaps
-AC_MSG_CHECKING(if fast termcap-loader is needed)
-AC_ARG_ENABLE(getcap,
-       [  --enable-getcap         fast termcap load, no xrefs to terminfo],
-       [with_getcap=$enableval],
-       [with_getcap=no])
-AC_MSG_RESULT($with_getcap)
-test "$with_getcap" = "yes" && AC_DEFINE(USE_GETCAP)
-
-AC_MSG_CHECKING(if translated termcaps will be cached in ~/.terminfo)
-AC_ARG_ENABLE(getcap-cache,
-       [  --enable-getcap-cache   cache translated termcaps in ~/.terminfo],
-       [with_getcap_cache=$enableval],
-       [with_getcap_cache=no])
-AC_MSG_RESULT($with_getcap_cache)
-test "$with_getcap_cache" = "yes" && AC_DEFINE(USE_GETCAP_CACHE)
+       if test "$with_ticlib" != no ; then
+               AC_ERROR(Options --with-ticlib and --enable-termcap cannot be combined)
+       fi
 
-fi
+       NCURSES_USE_TERMCAP=1
+       AC_MSG_CHECKING(for list of termcap files)
+       CF_WITH_PATHLIST(termpath,
+               [  --with-termpath=XXX     specify list of termcap files],
+               TERMPATH,
+               /etc/termcap:/usr/share/misc/termcap)
+       AC_MSG_RESULT($TERMPATH)
+       test -n "$TERMPATH" && AC_DEFINE_UNQUOTED(TERMPATH,"$TERMPATH",[Define to set the termcap searchlist])
+
+       ###     use option --enable-getcap to use a hacked getcap for reading termcaps
+       AC_MSG_CHECKING(if fast termcap-loader is needed)
+       AC_ARG_ENABLE(getcap,
+               [  --enable-getcap         fast termcap load, no xrefs to terminfo],
+               [with_getcap=$enableval],
+               [with_getcap=no])
+       AC_MSG_RESULT($with_getcap)
+       test "x$with_getcap" = "xyes" && AC_DEFINE(USE_GETCAP,1,[Define to 1 to use fast termcap-loader])
+
+       AC_MSG_CHECKING(if translated termcaps will be cached in ~/.terminfo)
+       AC_ARG_ENABLE(getcap-cache,
+               [  --enable-getcap-cache   cache translated termcaps in ~/.terminfo],
+               [with_getcap_cache=$enableval],
+               [with_getcap_cache=no])
+       AC_MSG_RESULT($with_getcap_cache)
+       test "x$with_getcap_cache" = "xyes" && AC_DEFINE(USE_GETCAP_CACHE,1,[Define to 1 if translated termcap should be stored in $HOME/.terminfo])
+
+fi
+AC_SUBST(NCURSES_USE_TERMCAP)
 
 ###   Use option --disable-home-terminfo to completely remove ~/.terminfo
 AC_MSG_CHECKING(if ~/.terminfo is wanted)
@@ -612,7 +792,7 @@ AC_ARG_ENABLE(home-terminfo,
        [with_home_terminfo=$enableval],
        [with_home_terminfo=yes])
 AC_MSG_RESULT($with_home_terminfo)
-test "$with_home_terminfo" = "yes" && AC_DEFINE(USE_HOME_TERMINFO)
+test "x$with_home_terminfo" = "xyes" && AC_DEFINE(USE_HOME_TERMINFO,1,[Define to 1 if $HOME/.terminfo feature is wanted])
 
 AC_MSG_CHECKING(if you want to use restricted environment when running as root)
 AC_ARG_ENABLE(root-environ,
@@ -620,7 +800,7 @@ AC_ARG_ENABLE(root-environ,
        [with_root_environ=$enableval],
        [with_root_environ=yes])
 AC_MSG_RESULT($with_root_environ)
-test "$with_root_environ" = yes && AC_DEFINE(USE_ROOT_ENVIRON)
+test "x$with_root_environ" = xyes && AC_DEFINE(USE_ROOT_ENVIRON,1,[Define to 1 if environment should be restricted for root user])
 
 ###   Use option --enable-symlinks to make tic use symlinks, not hard links
 ###   to reduce storage requirements for the terminfo database.
@@ -631,29 +811,29 @@ with_symlinks=no
 
 # soft links (symbolic links) are useful for some systems where hard links do
 # not work, or to make it simpler to copy terminfo trees around.
-if test "$ac_cv_func_symlink" = yes ; then
-    AC_MSG_CHECKING(if tic should use symbolic links)
-    AC_ARG_ENABLE(symlinks,
+if test "x$ac_cv_func_symlink" = xyes ; then
+       AC_MSG_CHECKING(if tic should use symbolic links)
+       AC_ARG_ENABLE(symlinks,
        [  --enable-symlinks       make tic use symbolic links not hard links],
        [with_symlinks=$enableval],
        [with_symlinks=no])
-    AC_MSG_RESULT($with_symlinks)
+       AC_MSG_RESULT($with_symlinks)
 fi
 
 # If we have hard links and did not choose to use soft links instead, there is
 # no reason to make this choice optional - use the hard links.
 if test "$with_symlinks" = no ; then
-    AC_MSG_CHECKING(if tic should use hard links)
-    if test "$ac_cv_func_link" = yes ; then
-       with_links=yes
-    else
-       with_links=no
-    fi
-    AC_MSG_RESULT($with_links)
+       AC_MSG_CHECKING(if tic should use hard links)
+       if test "x$ac_cv_func_link" = xyes ; then
+               with_links=yes
+       else
+               with_links=no
+       fi
+       AC_MSG_RESULT($with_links)
 fi
 
-test "$with_links" = yes && AC_DEFINE(USE_LINKS)
-test "$with_symlinks" = yes && AC_DEFINE(USE_SYMLINKS)
+test "x$with_links" = xyes && AC_DEFINE(USE_LINKS,1,[Define to 1 if hardlinks should be used in terminfo database])
+test "x$with_symlinks" = xyes && AC_DEFINE(USE_SYMLINKS,1,[Define to 1 if symbolic links should be used in terminfo database])
 
 ###   use option --enable-broken-linker to force on use of broken-linker support
 AC_MSG_CHECKING(if you want broken-linker support code)
@@ -664,13 +844,13 @@ AC_ARG_ENABLE(broken_linker,
 AC_MSG_RESULT($with_broken_linker)
 
 BROKEN_LINKER=0
-if test "$with_broken_linker" = yes ; then
-       AC_DEFINE(BROKEN_LINKER)
+if test "x$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
 elif test "$DFT_LWR_MODEL" = shared ; then
-       case $cf_cv_system_name in #(vi
-       cygwin*)
-               AC_DEFINE(BROKEN_LINKER)
+       case $cf_cv_system_name in
+       (cygwin*)
+               AC_DEFINE(BROKEN_LINKER,1,[Define to 1 to work around linkers which cannot link data-only modules])
                BROKEN_LINKER=1
                CF_VERBOSE(cygwin linker is broken anyway)
                ;;
@@ -685,7 +865,7 @@ AC_ARG_ENABLE(bsdpad,
        [with_bsdpad=$enableval],
        [with_bsdpad=no])
 AC_MSG_RESULT($with_bsdpad)
-test "$with_bsdpad" = yes && AC_DEFINE(BSD_TPUTS)
+test "x$with_bsdpad" = xyes && AC_DEFINE(BSD_TPUTS,1,[Define to 1 to recognize BSD-style prefix padding])
 
 ###   use option --enable-widec to turn on use of wide-character support
 NCURSES_CH_T=chtype
@@ -697,7 +877,9 @@ NCURSES_WCHAR_T=0
 NCURSES_WINT_T=0
 
 # Check to define _XOPEN_SOURCE "automatically"
-CF_XOPEN_SOURCE(500)
+CPPFLAGS_before_XOPEN="$CPPFLAGS"
+CF_XOPEN_SOURCE(600)
+CPPFLAGS_after_XOPEN="$CPPFLAGS"
 
 # Work around breakage on OS X
 CF_SIGWINCH
@@ -715,17 +897,25 @@ AC_ARG_ENABLE(widec,
        [with_widec=$enableval],
        [with_widec=no])
 AC_MSG_RESULT($with_widec)
-if test "$with_widec" = yes ; then
-       LIB_SUFFIX="w${LIB_SUFFIX}"
-       AC_DEFINE(USE_WIDEC_SUPPORT)
-       AC_DEFINE(NCURSES_WIDECHAR)
+
+NCURSES_WCWIDTH_GRAPHICS=1
+AC_SUBST(NCURSES_WCWIDTH_GRAPHICS)
+
+if test "x$with_widec" = xyes ; then
+       if test "x$disable_lib_suffixes" = xno ; then
+               LIB_SUFFIX="w${LIB_SUFFIX}"
+       fi
+       AC_DEFINE(USE_WIDEC_SUPPORT,1,[Define to 1 to compile with wide-char/UTF-8 code])
+       AC_DEFINE(NCURSES_WIDECHAR,1,[Define to 1 to compile with wide-char/UTF-8 code])
 
        CF_CHECK_WCHAR_H
+       CF_CHECK_WCWIDTH_GRAPHICS
+       test "$cf_cv_wcwidth_graphics" = no && NCURSES_WCWIDTH_GRAPHICS=0
 
        # with_overwrite=no
        NCURSES_CH_T=cchar_t
        AC_CHECK_FUNCS(putwc btowc wctob mbtowc wctomb mblen mbrlen mbrtowc wcsrtombs mbsrtowcs wcstombs mbstowcs)
-       if test "$ac_cv_func_putwc" != yes ; then
+       if test "x$ac_cv_func_putwc" != xyes ; then
                CF_UTF8_LIB
                if test "$cf_cv_utf8_lib" != no ; then
                        NCURSES_LIBUTF8=1
@@ -736,7 +926,7 @@ if test "$with_widec" = yes ; then
        CF_WCHAR_TYPE(wint_t,    NCURSES_WINT_T,    NCURSES_OK_WINT_T)
 
        if test "$NCURSES_MBSTATE_T" != 0; then
-               AC_DEFINE(NEED_MBSTATE_T_DEF)
+               AC_DEFINE(NEED_MBSTATE_T_DEF,1,[Define to 1 if we must declare mbstate_t])
        fi
 fi
 AC_SUBST(NCURSES_CH_T)
@@ -751,23 +941,14 @@ AC_SUBST(NCURSES_OK_WCHAR_T)
 AC_SUBST(NCURSES_OK_WINT_T)
 
 ###   use option --disable-lp64 to allow long chtype
-case $cf_cv_abi_version in
-[[345]]*)
-       default_with_lp64=no
-       ;;
-*)
-       default_with_lp64=yes
-       ;;
-esac
-
 AC_MSG_CHECKING(whether to enable _LP64 definition in curses.h)
 AC_ARG_ENABLE(lp64,
        [  --disable-lp64          allow chtype to be long (ignore _LP64)],
        [with_lp64=$enableval],
-       [with_lp64=$default_with_lp64])
+       [with_lp64=$cf_dft_with_lp64])
 AC_MSG_RESULT($with_lp64)
 
-if test "$with_lp64" = yes ; then
+if test "x$with_lp64" = xyes ; then
        cf_cv_enable_lp64=1
 else
        cf_cv_enable_lp64=0
@@ -784,7 +965,7 @@ AC_ARG_ENABLE(tparm-varargs,
        [with_tparm_varargs=yes])
 AC_MSG_RESULT($with_tparm_varargs)
 NCURSES_TPARM_VARARGS=0
-test "$with_tparm_varargs" = yes && NCURSES_TPARM_VARARGS=1
+test "x$with_tparm_varargs" = xyes && NCURSES_TPARM_VARARGS=1
 AC_SUBST(NCURSES_TPARM_VARARGS)
 
 ###   use option --disable-tic-depends to make libtic not explicitly depend on ncurses/ncursesw
@@ -799,6 +980,23 @@ else
        with_tic_depends=no
 fi
 
+###   use option --disable-wattr-macros to suppress wattr* macros from curses.h
+AC_MSG_CHECKING(if you want to suppress wattr* macros to help with ncurses5/ncurses6 transition)
+AC_ARG_ENABLE(wattr-macros,
+       [  --disable-wattr-macros  suppress wattr* macros to help with ncurses5/ncurses6 transition],
+       [with_wattr_macros=$enableval],
+       [with_wattr_macros=yes])
+if [[ "x$with_wattr_macros" != xyes ]]; then
+       NCURSES_WATTR_MACROS=0
+       AC_MSG_RESULT(yes)
+else
+       NCURSES_WATTR_MACROS=1
+       AC_MSG_RESULT(no)
+fi
+AC_SUBST(NCURSES_WATTR_MACROS)
+
+CF_WITH_X11_RGB
+
 ###   use option --with-bool to override bool's type
 AC_MSG_CHECKING(for type of bool)
 AC_ARG_WITH(bool,
@@ -822,7 +1020,7 @@ AC_MSG_CHECKING(for type of chtype)
 AC_ARG_WITH(chtype,
        [  --with-chtype=TYPE      override type of chtype],
        [NCURSES_CHTYPE="$withval"],
-       [NCURSES_CHTYPE=auto])
+       [NCURSES_CHTYPE=$cf_dft_chtype])
 AC_MSG_RESULT($NCURSES_CHTYPE)
 
 ###   use option --with-ospeed to override ospeed's type
@@ -839,7 +1037,7 @@ AC_MSG_CHECKING(for type of mmask_t)
 AC_ARG_WITH(mmask-t,
        [  --with-mmask-t=TYPE     override type of mmask_t],
        [NCURSES_MMASK_T="$withval"],
-       [NCURSES_MMASK_T=auto])
+       [NCURSES_MMASK_T=$cf_dft_mmask_t])
 AC_MSG_RESULT($NCURSES_MMASK_T)
 
 ###   use option --with-ccharw-max to override CCHARW_MAX size
@@ -851,12 +1049,27 @@ AC_ARG_WITH(ccharw-max,
 AC_MSG_RESULT($NCURSES_CCHARW_MAX)
 AC_SUBST(NCURSES_CCHARW_MAX)
 
+AC_CHECK_SIZEOF([signed char], 0)
+if test "$ac_cv_sizeof_signed_char" = 1 ; then
+       NCURSES_SBOOL="signed char"
+else
+       NCURSES_SBOOL="char"
+fi
+AC_MSG_CHECKING(if you want to use signed Boolean array in term.h)
+AC_ARG_ENABLE(signed-char,
+       [  --enable-signed-char    compile using signed Boolean's in term.h],
+       [with_signed_char=$enableval],
+       [with_signed_char=no])
+AC_MSG_RESULT($with_signed_char)
+test "x$with_signed_char" != xyes && NCURSES_SBOOL="char"
+AC_SUBST(NCURSES_SBOOL)
+
 ###   use option --with-tparm-arg to override tparm's argument type
 AC_MSG_CHECKING(for type of tparm args)
 AC_ARG_WITH(tparm-arg,
        [  --with-tparm-arg=TYPE   override parameter type of tparm],
        [NCURSES_TPARM_ARG="$withval"],
-       [NCURSES_TPARM_ARG=long])
+       [NCURSES_TPARM_ARG=$cf_dft_tparm_arg])
 AC_MSG_RESULT($NCURSES_TPARM_ARG)
 AC_SUBST(NCURSES_TPARM_ARG)
 
@@ -867,10 +1080,10 @@ AC_ARG_WITH(rcs-ids,
        [with_rcs_ids=$withval],
        [with_rcs_ids=no])
 AC_MSG_RESULT($with_rcs_ids)
-test "$with_rcs_ids" = yes && AC_DEFINE(USE_RCS_IDS)
+test "x$with_rcs_ids" = xyes && AC_DEFINE(USE_RCS_IDS,1,[Define to 1 to compile-in RCS identifiers])
 
 ###############################################################################
-CF_MAN_PAGES([ captoinfo clear infocmp infotocap tabs tic toe tput tset ])
+CF_MAN_PAGES([ captoinfo clear infocmp infotocap reset tabs tic toe tput tset ])
 
 ###############################################################################
 CF_HELP_MESSAGE(Extensions:)
@@ -882,20 +1095,22 @@ AC_ARG_ENABLE(ext-funcs,
        [with_ext_funcs=$enableval],
        [with_ext_funcs=yes])
 AC_MSG_RESULT($with_ext_funcs)
-if test "$with_ext_funcs" = yes ; then
+if test "x$with_ext_funcs" = xyes ; then
        NCURSES_EXT_FUNCS=1
-       AC_DEFINE(HAVE_ASSUME_DEFAULT_COLORS)
-       AC_DEFINE(HAVE_CURSES_VERSION)
-       AC_DEFINE(HAVE_HAS_KEY)
-       AC_DEFINE(HAVE_RESIZETERM)
-       AC_DEFINE(HAVE_RESIZE_TERM)
-       AC_DEFINE(HAVE_TERM_ENTRY_H)
-       AC_DEFINE(HAVE_USE_DEFAULT_COLORS)
-       AC_DEFINE(HAVE_USE_SCREEN)
-       AC_DEFINE(HAVE_USE_WINDOW)
-       AC_DEFINE(HAVE_WRESIZE)
-       AC_DEFINE(NCURSES_EXT_FUNCS)
+       AC_DEFINE(NCURSES_EXT_FUNCS,1,[Define to 1 to enable ncurses extended functions])
+       AC_DEFINE(HAVE_ASSUME_DEFAULT_COLORS,1,[Define to 1 to enable assume_default_colors() function in test-programs])
+       AC_DEFINE(HAVE_CURSES_VERSION,1,[Define to 1 to enable curses_version() function in test-programs])
+       AC_DEFINE(HAVE_HAS_KEY,1,[Define to 1 to enable has_key() function in test-programs])
+       AC_DEFINE(HAVE_RESIZETERM,1,[Define to 1 to enable resizeterm() function in test-programs])
+       AC_DEFINE(HAVE_RESIZE_TERM,1,[Define to 1 to enable resize_term() function in test-programs])
+       AC_DEFINE(HAVE_TERM_ENTRY_H,1,[Define to 1 to enable term_entry() function in test-programs])
+       AC_DEFINE(HAVE_USE_DEFAULT_COLORS,1,[Define to 1 to enable use_default_colors() function in test-programs])
+       AC_DEFINE(HAVE_USE_EXTENDED_NAMES,1,[Define to 1 to enable use_extended_names() function in test-programs])
+       AC_DEFINE(HAVE_USE_SCREEN,1,[Define to 1 to enable use_screen() function in test-programs])
+       AC_DEFINE(HAVE_USE_WINDOW,1,[Define to 1 to enable use_window() function in test-programs])
+       AC_DEFINE(HAVE_WRESIZE,1,[Define to 1 to enable wresize() function in test-programs])
        GENERATED_EXT_FUNCS=generated
+       test "x$with_ext_funcs" = xyes || cf_dft_ext_spfuncs=no
 else
        NCURSES_EXT_FUNCS=0
        GENERATED_EXT_FUNCS=
@@ -903,15 +1118,16 @@ fi
 AC_SUBST(NCURSES_EXT_FUNCS)
 AC_SUBST(GENERATED_EXT_FUNCS)
 
-AC_MSG_CHECKING(if you want to build with experimental SCREEN extensions)
+AC_MSG_CHECKING(if you want to build with SCREEN extensions)
 AC_ARG_ENABLE(sp-funcs,
-       [  --enable-sp-funcs       enable experimental SCREEN-extensions],
+       [  --enable-sp-funcs       enable SCREEN-extensions],
        [with_sp_funcs=$enableval],
-       [with_sp_funcs=no])
+       [with_sp_funcs=$cf_dft_ext_spfuncs])
 AC_MSG_RESULT($with_sp_funcs)
-if test "$with_sp_funcs" = yes ; then
+if test "x$with_sp_funcs" = xyes ; then
        NCURSES_SP_FUNCS=1
-       AC_DEFINE(NCURSES_SP_FUNCS)
+       AC_DEFINE(NCURSES_SP_FUNCS,1,[Define to 1 to enable SCREEN-extensions])
+       AC_DEFINE(HAVE_TPUTS_SP,1,[Define to 1 to enable tputs_sp() function in test-programs])
        GENERATED_SP_FUNCS=generated
 else
        NCURSES_SP_FUNCS=0
@@ -920,15 +1136,18 @@ fi
 AC_SUBST(NCURSES_SP_FUNCS)
 AC_SUBST(GENERATED_SP_FUNCS)
 
-AC_MSG_CHECKING(if you want to build with experimental terminal-driver)
+AC_MSG_CHECKING(if you want to build with terminal-driver)
 AC_ARG_ENABLE(term-driver,
-       [  --enable-term-driver    enable experimental terminal-driver],
+       [  --enable-term-driver    enable terminal-driver],
        [with_term_driver=$enableval],
        [with_term_driver=no])
 AC_MSG_RESULT($with_term_driver)
-if test "$with_term_driver" = yes ; then
-       AC_DEFINE(USE_TERM_DRIVER)
-       if test "$with_sp_funcs" != yes ; then
+if test "x$with_term_driver" = xyes ; then
+       AC_DEFINE(USE_TERM_DRIVER,1,[Define to 1 to enable terminal-driver])
+       if test "x$with_termlib" != xno ; then
+               AC_MSG_ERROR(The term-driver option conflicts with the termlib option)
+       fi
+       if test "x$with_sp_funcs" != xyes ; then
                AC_MSG_ERROR(The term-driver option relies upon sp-funcs)
        fi
 fi
@@ -938,10 +1157,10 @@ AC_MSG_CHECKING(for extended use of const keyword)
 AC_ARG_ENABLE(const,
        [  --enable-const          compile with extra/non-standard const],
        [with_ext_const=$enableval],
-       [with_ext_const=no])
+       [with_ext_const=$cf_dft_ext_const])
 AC_MSG_RESULT($with_ext_const)
 NCURSES_CONST='/*nothing*/'
-if test "$with_ext_const" = yes ; then
+if test "x$with_ext_const" = xyes ; then
        NCURSES_CONST=const
 fi
 AC_SUBST(NCURSES_CONST)
@@ -951,18 +1170,21 @@ AC_MSG_CHECKING(if you want to use extended colors)
 AC_ARG_ENABLE(ext-colors,
        [  --enable-ext-colors     compile for 256-color support],
        [with_ext_colors=$enableval],
-       [with_ext_colors=no])
+       [with_ext_colors=$cf_dft_ext_colors])
 AC_MSG_RESULT($with_ext_colors)
 NCURSES_EXT_COLORS=0
-if test "$with_ext_colors" = yes ; then
-       if test "$with_widec" != yes ; then
-               AC_MSG_ERROR(This option applies only to wide-character library)
+if test "x$with_ext_colors" = xyes ; then
+       if test "x$with_widec" != xyes ; then
+               AC_MSG_WARN(This option applies only to wide-character library)
        else
                # cannot be ABI 5 since it changes sizeof(cchar_t)
                CF_NCURSES_ABI_6
+               NCURSES_EXT_COLORS=1
+               AC_DEFINE(NCURSES_EXT_COLORS,1,[Define to 1 to compile for 256-color support])
+               AC_DEFINE(HAVE_ALLOC_PAIR,1,[Define to 1 to enable alloc_pair() function])
+               AC_DEFINE(HAVE_INIT_EXTENDED_COLOR,1,[Define to 1 to enable init_extended_color() function in test-programs])
+               AC_DEFINE(HAVE_RESET_COLOR_PAIRS,1,[Define to 1 to enable reset_color_pairs() function in test-programs])
        fi
-       NCURSES_EXT_COLORS=1
-       AC_DEFINE(NCURSES_EXT_COLORS)
 fi
 AC_SUBST(NCURSES_EXT_COLORS)
 
@@ -971,37 +1193,33 @@ AC_MSG_CHECKING(if you want to use extended mouse encoding)
 AC_ARG_ENABLE(ext-mouse,
        [  --enable-ext-mouse      compile for extended mouse-encoding],
        [with_ext_mouse=$enableval],
-       [with_ext_mouse=no])
+       [with_ext_mouse=$cf_dft_ext_mouse])
 AC_MSG_RESULT($with_ext_mouse)
 NCURSES_MOUSE_VERSION=1
-if test "$with_ext_mouse" = yes ; then
+if test "x$with_ext_mouse" = xyes ; then
        NCURSES_MOUSE_VERSION=2
        CF_NCURSES_ABI_6
 fi
 AC_SUBST(NCURSES_MOUSE_VERSION)
 
+###   use option --enable-ext-putwin to turn on extended screendumps
+AC_MSG_CHECKING(if you want to use extended putwin/screendump)
+AC_ARG_ENABLE(ext-putwin,
+       [  --enable-ext-putwin     compile with extended putwin/screendump],
+       [with_ext_putwin=$enableval],
+       [with_ext_putwin=$cf_dft_ext_putwin])
+AC_MSG_RESULT($with_ext_putwin)
+if test "x$with_ext_putwin" = xyes ; then
+       AC_DEFINE(NCURSES_EXT_PUTWIN,1,[Define to 1 to compile with extended putwin/screendump])
+fi
+
 AC_MSG_CHECKING(if you want \$NCURSES_NO_PADDING code)
 AC_ARG_ENABLE(no-padding,
        [  --enable-no-padding     compile with $NCURSES_NO_PADDING code],
        [with_no_padding=$enableval],
        [with_no_padding=$with_ext_funcs])
 AC_MSG_RESULT($with_no_padding)
-test "$with_no_padding" = yes && AC_DEFINE(NCURSES_NO_PADDING)
-
-AC_CHECK_SIZEOF([signed char], 0)
-if test "$ac_cv_sizeof_signed_char" = 1 ; then
-       NCURSES_SBOOL="signed char"
-else
-       NCURSES_SBOOL="char"
-fi
-AC_MSG_CHECKING(if you want to use signed Boolean array in term.h)
-AC_ARG_ENABLE(signed-char,
-       [  --enable-signed-char    compile using signed Boolean's in term.h],
-       [with_signed_char=$enableval],
-       [with_signed_char=no])
-AC_MSG_RESULT($with_signed_char)
-test "$with_signed_char" != yes && NCURSES_SBOOL="char"
-AC_SUBST(NCURSES_SBOOL)
+test "x$with_no_padding" = xyes && AC_DEFINE(NCURSES_NO_PADDING,1,[Define to 1 to compile with $NCURSES_NO_PADDING code])
 
 ###   use option --enable-sigwinch to turn on use of SIGWINCH logic
 AC_MSG_CHECKING(if you want SIGWINCH handler)
@@ -1010,7 +1228,7 @@ AC_ARG_ENABLE(sigwinch,
        [with_sigwinch=$enableval],
        [with_sigwinch=$with_ext_funcs])
 AC_MSG_RESULT($with_sigwinch)
-test "$with_sigwinch" = yes && AC_DEFINE(USE_SIGWINCH)
+test "x$with_sigwinch" = xyes && AC_DEFINE(USE_SIGWINCH,1,[Define to 1 to compile with SIGWINCH handler])
 
 ###   use option --enable-tcap-names to allow user to define new capabilities
 AC_MSG_CHECKING(if you want user-definable terminal capabilities like termcap)
@@ -1020,79 +1238,11 @@ AC_ARG_ENABLE(tcap-names,
        [with_tcap_names=$with_ext_funcs])
 AC_MSG_RESULT($with_tcap_names)
 NCURSES_XNAMES=0
-test "$with_tcap_names" = yes && NCURSES_XNAMES=1
+test "x$with_tcap_names" = xyes && NCURSES_XNAMES=1
 AC_SUBST(NCURSES_XNAMES)
 
-###############################################################################
-# These options are relatively safe to experiment with.
-CF_HELP_MESSAGE(Development Code:)
-AC_MSG_CHECKING(if you want all development code)
-AC_ARG_WITH(develop,
-       [  --without-develop       disable development options],
-       [with_develop=$withval],
-       [with_develop=no])
-AC_MSG_RESULT($with_develop)
-
-###   use option --enable-hard-tabs to turn on use of hard-tabs optimize
-AC_MSG_CHECKING(if you want hard-tabs code)
-AC_ARG_ENABLE(hard-tabs,
-       [  --enable-hard-tabs      compile with hard-tabs code],,
-       [enable_hard_tabs=$with_develop])
-AC_MSG_RESULT($enable_hard_tabs)
-test "$enable_hard_tabs" = yes && AC_DEFINE(USE_HARD_TABS)
-
-###   use option --enable-xmc-glitch to turn on use of magic-cookie optimize
-AC_MSG_CHECKING(if you want limited support for xmc)
-AC_ARG_ENABLE(xmc-glitch,
-       [  --enable-xmc-glitch     compile with support for xmc (magic-cookie)],,
-       [enable_xmc_glitch=$with_develop])
-AC_MSG_RESULT($enable_xmc_glitch)
-test "$enable_xmc_glitch" = yes && AC_DEFINE(USE_XMC_SUPPORT)
-
-###############################################################################
-# These are just experimental, probably should not be in a package:
-CF_HELP_MESSAGE(Experimental Code:)
-
-AC_MSG_CHECKING(if you do not want to assume colors are white-on-black)
-AC_ARG_ENABLE(assumed-color,
-       [  --disable-assumed-color do not assume anything about default-colors],
-       [with_assumed_color=$enableval],
-       [with_assumed_color=yes])
-AC_MSG_RESULT($with_assumed_color)
-test "$with_assumed_color" = yes && AC_DEFINE(USE_ASSUMED_COLOR)
-
-###   use option --enable-hashmap to turn on use of hashmap scrolling logic
-AC_MSG_CHECKING(if you want hashmap scrolling-optimization code)
-AC_ARG_ENABLE(hashmap,
-       [  --disable-hashmap       compile without hashmap scrolling-optimization],
-       [with_hashmap=$enableval],
-       [with_hashmap=yes])
-AC_MSG_RESULT($with_hashmap)
-test "$with_hashmap" = yes && AC_DEFINE(USE_HASHMAP)
-
-###   use option --enable-colorfgbg to turn on use of $COLORFGBG environment
-AC_MSG_CHECKING(if you want colorfgbg code)
-AC_ARG_ENABLE(colorfgbg,
-       [  --enable-colorfgbg      compile-in experimental $COLORFGBG code],
-       [with_colorfgbg=$enableval],
-       [with_colorfgbg=no])
-AC_MSG_RESULT($with_colorfgbg)
-test "$with_colorfgbg" = yes && AC_DEFINE(USE_COLORFGBG)
-
-###   use option --enable-interop to turn on use of bindings used for interop
-AC_MSG_CHECKING(if you want interop bindings)
-AC_ARG_ENABLE(interop,
-       [  --enable-interop        compile-in experimental interop bindings],
-       [with_exp_interop=$enableval],
-       [with_exp_interop=no])
-AC_MSG_RESULT($with_exp_interop)
-
-NCURSES_INTEROP_FUNCS=0
-test "$with_exp_interop" = yes && NCURSES_INTEROP_FUNCS=1
-AC_SUBST(NCURSES_INTEROP_FUNCS)
-
-# This is still experimental (20080329), but should ultimately be moved to
-# the script-block --with-normal, etc.
+##############################################################################
+CF_HELP_MESSAGE(Reentrant Code:)
 CF_WITH_PTHREAD
 
 if test "x$with_pthread" != xno; then
@@ -1103,8 +1253,8 @@ if test "x$with_pthread" != xno; then
                        [use_pthreads_eintr=$enableval],
                        [use_pthreads_eintr=no])
                AC_MSG_RESULT($use_pthreads_eintr)
-               if test $use_pthreads_eintr = yes ; then
-                       AC_DEFINE(USE_PTHREADS_EINTR)
+               if test "x$use_pthreads_eintr" = xyes ; then
+                       AC_DEFINE(USE_PTHREADS_EINTR,1,[Define to 1 to enable EINTR in wgetch with pthreads])
                fi])
 
        AC_MSG_CHECKING(if you want to use weak-symbols for pthreads)
@@ -1113,24 +1263,25 @@ if test "x$with_pthread" != xno; then
                [use_weak_symbols=$enableval],
                [use_weak_symbols=no])
        AC_MSG_RESULT($use_weak_symbols)
-       if test "$use_weak_symbols" = yes ; then
+       if test "x$use_weak_symbols" = xyes ; then
                CF_WEAK_SYMBOLS
        else
                cf_cv_weak_symbols=no
        fi
 
-       if test $cf_cv_weak_symbols = yes ; then
-               AC_DEFINE(USE_WEAK_SYMBOLS)
+       if test "x$cf_cv_weak_symbols" = xyes ; then
+               AC_DEFINE(USE_WEAK_SYMBOLS,1,[Define to 1 to enable weak-symbols for pthreads])
        fi
 fi
 
 PTHREAD=
-if test "$with_pthread" = "yes" ; then
-    AC_DEFINE(USE_PTHREADS)
-    enable_reentrant=yes
-    if test $cf_cv_weak_symbols = yes ; then
-        PTHREAD=-lpthread
-    fi
+if test "x$with_pthread" = "xyes" ; then
+       AC_DEFINE(USE_PTHREADS,1,[Define to 1 to use pthreads feature])
+       enable_reentrant=yes
+       if test "x$cf_cv_weak_symbols" = xyes ; then
+               PTHREAD=-lpthread
+               CF_ADD_LIB(pthread,PRIVATE_LIBS)
+       fi
 fi
 AC_SUBST(PTHREAD)
 
@@ -1138,37 +1289,93 @@ AC_SUBST(PTHREAD)
 # opaque outside of that, so there is no --enable-opaque option.  We can use
 # this option without --with-pthreads, but this will be always set for
 # pthreads.
-AC_MSG_CHECKING(if you want experimental reentrant code)
+AC_MSG_CHECKING(if you want reentrant code)
 AC_ARG_ENABLE(reentrant,
-       [  --enable-reentrant      compile with experimental reentrant code],
+       [  --enable-reentrant      compile with reentrant code],
        [with_reentrant=$enableval],
        [with_reentrant=no])
 AC_MSG_RESULT($with_reentrant)
-if test "$with_reentrant" = yes ; then
+if test "x$with_reentrant" = xyes ; then
        cf_cv_enable_reentrant=1
        cf_cv_enable_opaque="NCURSES_INTERNALS"
-       NCURSES_OPAQUE=1
        NCURSES_SIZE_T=int
-       if test $cf_cv_weak_symbols = yes ; then
+       if test "x$cf_cv_weak_symbols" = xyes ; then
                CF_REMOVE_LIB(LIBS,$LIBS,pthread)
                CF_ADD_LIB(pthread,TEST_LIBS)
                CF_ADD_LIB(pthread,TEST_LIBS2)
+               CF_ADD_LIB(pthread,PRIVATE_LIBS)
        else
-               LIB_SUFFIX="t${LIB_SUFFIX}"
+               # when not using weak symbols but with_reentrant,
+               # add 't' to the library suffix on all platforms
+               # except cygwin, where we only do that if ALSO
+               # compiling with full thread support.
+               case "$host" in
+               (*cygwin* | *msys*)
+                       if test "$with_pthread" = "yes" ; then
+                               if test "x$disable_lib_suffixes" = "xno" ; then
+                                       LIB_SUFFIX="t${LIB_SUFFIX}"
+                               fi
+                       fi ;;
+               (*)
+                       if test "x$disable_lib_suffixes" = "xno" ; then
+                               LIB_SUFFIX="t${LIB_SUFFIX}"
+                       fi
+                       ;;
+               esac
        fi
-       AC_DEFINE(USE_REENTRANT)
+       AC_DEFINE(USE_REENTRANT,1,[Define to 1 to use reentrant feature])
        CF_NCURSES_ABI_6
 else
        cf_cv_enable_reentrant=0
        cf_cv_enable_opaque="NCURSES_OPAQUE"
-       NCURSES_OPAQUE=0
        NCURSES_SIZE_T=short
 fi
 AC_SUBST(cf_cv_enable_reentrant)
 AC_SUBST(cf_cv_enable_opaque)
-AC_SUBST(NCURSES_OPAQUE)
+
 AC_SUBST(NCURSES_SIZE_T)
 
+AC_MSG_CHECKING(if you want opaque curses-library structures)
+CF_ARG_ENABLE(opaque-curses,
+       [  --enable-opaque-curses  make curses WINDOW, etc., "opaque"],
+       [enable_opaque_curses=yes],[
+        test "$cf_cv_enable_reentrant" = 1 && enable_opaque_curses=yes
+        test "$cf_cv_enable_reentrant" = 1 || enable_opaque_curses=no
+       ])
+AC_MSG_RESULT($enable_opaque_curses)
+
+test "$cf_cv_enable_reentrant" = 1 && \
+test "$enable_opaque_curses" = no && \
+AC_MSG_ERROR(reentrant configuration requires opaque library)
+
+AC_MSG_CHECKING(if you want opaque form-library structures)
+AC_ARG_ENABLE(opaque-form,
+       [  --enable-opaque-form    make form-library structures "opaque"],
+       [enable_opaque_form=yes],[enable_opaque_form=no])
+AC_MSG_RESULT($enable_opaque_form)
+
+AC_MSG_CHECKING(if you want opaque menu-library structures)
+AC_ARG_ENABLE(opaque-menu,
+       [  --enable-opaque-menu    make menu-library structures "opaque"],
+       [enable_opaque_menu=yes],[enable_opaque_menu=no])
+AC_MSG_RESULT($enable_opaque_menu)
+
+AC_MSG_CHECKING(if you want opaque panel-library structures)
+AC_ARG_ENABLE(opaque-panel,
+       [  --enable-opaque-panel   make panel-library structures "opaque"],
+       [enable_opaque_panel=yes],[enable_opaque_panel=no])
+AC_MSG_RESULT($enable_opaque_panel)
+
+NCURSES_OPAQUE=0;              test "$enable_opaque_curses" = yes && NCURSES_OPAQUE=1
+NCURSES_OPAQUE_FORM=0; test "$enable_opaque_form"   = yes && NCURSES_OPAQUE_FORM=1
+NCURSES_OPAQUE_MENU=0; test "$enable_opaque_menu"   = yes && NCURSES_OPAQUE_MENU=1
+NCURSES_OPAQUE_PANEL=0;        test "$enable_opaque_panel"  = yes && NCURSES_OPAQUE_PANEL=1
+
+AC_SUBST(NCURSES_OPAQUE)
+AC_SUBST(NCURSES_OPAQUE_FORM)
+AC_SUBST(NCURSES_OPAQUE_MENU)
+AC_SUBST(NCURSES_OPAQUE_PANEL)
+
 ### Allow using a different wrap-prefix
 if test "$cf_cv_enable_reentrant" != 0 || test "$BROKEN_LINKER" = 1 ; then
        AC_MSG_CHECKING(for prefix used to wrap public variables)
@@ -1181,7 +1388,76 @@ else
        NCURSES_WRAP_PREFIX=_nc_
 fi
 AC_SUBST(NCURSES_WRAP_PREFIX)
-AC_DEFINE_UNQUOTED(NCURSES_WRAP_PREFIX,"$NCURSES_WRAP_PREFIX")
+AC_DEFINE_UNQUOTED(NCURSES_WRAP_PREFIX,"$NCURSES_WRAP_PREFIX",[Define to override _nc_ prefix])
+
+###############################################################################
+# These options are relatively safe to experiment with.
+CF_HELP_MESSAGE(Development Code:)
+AC_MSG_CHECKING(if you want all development code)
+AC_ARG_WITH(develop,
+       [  --without-develop       disable development options],
+       [with_develop=$withval],
+       [with_develop=no])
+AC_MSG_RESULT($with_develop)
+
+###   use option --enable-hard-tabs to turn on use of hard-tabs optimize
+AC_MSG_CHECKING(if you want hard-tabs code)
+AC_ARG_ENABLE(hard-tabs,
+       [  --enable-hard-tabs      compile with hard-tabs code],,
+       [enable_hard_tabs=$with_develop])
+AC_MSG_RESULT($enable_hard_tabs)
+test "x$enable_hard_tabs" = xyes && AC_DEFINE(USE_HARD_TABS,1,[Define to 1 to compile with hard-tabs code])
+
+###   use option --enable-xmc-glitch to turn on use of magic-cookie optimize
+AC_MSG_CHECKING(if you want limited support for xmc)
+AC_ARG_ENABLE(xmc-glitch,
+       [  --enable-xmc-glitch     compile with support for xmc (magic-cookie)],,
+       [enable_xmc_glitch=$with_develop])
+AC_MSG_RESULT($enable_xmc_glitch)
+test "x$enable_xmc_glitch" = xyes && AC_DEFINE(USE_XMC_SUPPORT,1,[Define to 1 to compile with support for xmc (magic-cookie)])
+
+###############################################################################
+# These are just experimental, probably should not be in a package:
+CF_HELP_MESSAGE(Experimental Code:)
+
+AC_MSG_CHECKING(if you do not want to assume colors are white-on-black)
+AC_ARG_ENABLE(assumed-color,
+       [  --disable-assumed-color do not assume anything about default-colors],
+       [with_assumed_color=$enableval],
+       [with_assumed_color=yes])
+AC_MSG_RESULT($with_assumed_color)
+test "x$with_assumed_color" = xyes && AC_DEFINE(USE_ASSUMED_COLOR,1,[Define to 1 to assume things about default-colors])
+
+###   use option --enable-hashmap to turn on use of hashmap scrolling logic
+AC_MSG_CHECKING(if you want hashmap scrolling-optimization code)
+AC_ARG_ENABLE(hashmap,
+       [  --disable-hashmap       compile without hashmap scrolling-optimization],
+       [with_hashmap=$enableval],
+       [with_hashmap=yes])
+AC_MSG_RESULT($with_hashmap)
+test "x$with_hashmap" = xyes && AC_DEFINE(USE_HASHMAP,1,[Define to 1 to compile with hashmap scrolling-optimization])
+
+###   use option --enable-colorfgbg to turn on use of $COLORFGBG environment
+AC_MSG_CHECKING(if you want colorfgbg code)
+AC_ARG_ENABLE(colorfgbg,
+       [  --enable-colorfgbg      compile-in experimental $COLORFGBG code],
+       [with_colorfgbg=$enableval],
+       [with_colorfgbg=no])
+AC_MSG_RESULT($with_colorfgbg)
+test "x$with_colorfgbg" = xyes && AC_DEFINE(USE_COLORFGBG,1,[Define to 1 to compile-in experimental $COLORFGBG code])
+
+###   use option --enable-interop to turn on use of bindings used for interop
+AC_MSG_CHECKING(if you want interop bindings)
+AC_ARG_ENABLE(interop,
+       [  --enable-interop        compile-in interop bindings],
+       [with_exp_interop=$enableval],
+       [with_exp_interop=$cf_dft_interop])
+AC_MSG_RESULT($with_exp_interop)
+
+NCURSES_INTEROP_FUNCS=0
+test "x$with_exp_interop" = xyes && NCURSES_INTEROP_FUNCS=1
+AC_SUBST(NCURSES_INTEROP_FUNCS)
+
 
 AC_MSG_CHECKING(if you want experimental safe-sprintf code)
 AC_ARG_ENABLE(safe-sprintf,
@@ -1189,7 +1465,6 @@ AC_ARG_ENABLE(safe-sprintf,
        [with_safe_sprintf=$enableval],
        [with_safe_sprintf=no])
 AC_MSG_RESULT($with_safe_sprintf)
-test "$with_safe_sprintf" = yes && AC_DEFINE(USE_SAFE_SPRINTF)
 
 ###   use option --disable-scroll-hints to turn off use of scroll-hints scrolling logic
 # when hashmap is used scroll hints are useless
@@ -1200,36 +1475,49 @@ AC_ARG_ENABLE(scroll-hints,
        [with_scroll_hints=$enableval],
        [with_scroll_hints=yes])
 AC_MSG_RESULT($with_scroll_hints)
-test "$with_scroll_hints" = yes && AC_DEFINE(USE_SCROLL_HINTS)
+test "x$with_scroll_hints" = xyes && AC_DEFINE(USE_SCROLL_HINTS,1,[Define to 1 to compile without scroll-hints code])
 fi
 
-AC_MSG_CHECKING(if you want experimental wgetch-events code)
+AC_MSG_CHECKING(if you want wgetch-events code)
 AC_ARG_ENABLE(wgetch-events,
-       [  --enable-wgetch-events  compile with experimental wgetch-events code],
+       [  --enable-wgetch-events  compile with wgetch-events code],
        [with_wgetch_events=$enableval],
        [with_wgetch_events=no])
 AC_MSG_RESULT($with_wgetch_events)
-test "$with_wgetch_events" = yes && AC_DEFINE(NCURSES_WGETCH_EVENTS)
+test "x$with_wgetch_events" = xyes && AC_DEFINE(NCURSES_WGETCH_EVENTS,1,[Define to 1 to compile with wgetch-events code])
 
 ###############################################################################
 CF_HELP_MESSAGE(Testing/development Options:)
 
 ###    use option --disable-echo to suppress full display compiling commands
-AC_MSG_CHECKING(if you want to display full commands during build)
-AC_ARG_ENABLE(echo,
-       [  --enable-echo           build: display "compiling" commands (default)],
-       [with_echo=$enableval],
-       [with_echo=yes])
-if test "$with_echo" = yes; then
+CF_DISABLE_ECHO
+if test "x$enable_echo" = xyes; then
        ECHO_LINK=
 else
        ECHO_LINK='@ echo linking $@ ... ;'
        test -n "$LIBTOOL" && LIBTOOL="$LIBTOOL --silent"
        test -n "$LIBTOOL_CXX" && LIBTOOL_CXX="$LIBTOOL_CXX --silent"
 fi
-AC_MSG_RESULT($with_echo)
 AC_SUBST(ECHO_LINK)
 
+# --disable-stripping is used for debugging
+CF_INSTALL_OPTS
+
+# If we're avoiding relinking of shared libraries during install, that is to
+# avoid modifying the build-tree.  For the same reason, avoid doing ranlib if
+# the install program has "-p" (for preserving timestamps).
+cf_cv_do_reranlib=yes
+if test "x$cf_cv_install_p" = xyes
+then
+       if test "x$cf_cv_do_relink" != xyes
+       then
+               cf_cv_do_reranlib=no
+               INSTALL_OPT_P="-p"
+               INSTALL_LIB="$INSTALL_LIB $INSTALL_OPT_P"
+       fi
+fi
+AC_SUBST(INSTALL_OPT_P)
+
 ###    use option --enable-warnings to turn on all gcc warnings
 AC_MSG_CHECKING(if you want to see compiler warnings)
 AC_ARG_ENABLE(warnings,
@@ -1239,8 +1527,8 @@ AC_MSG_RESULT($with_warnings)
 
 if test "x$with_warnings" = "xyes"; then
        CF_ADD_ADAFLAGS(-gnatg)
-       CF_GCC_WARNINGS(Wdeclaration-after-statement Wextra Wno-unknown-pragmas Wswitch-enum)
-       if test "$cf_with_cxx" = yes ; then
+       CF_GCC_WARNINGS(Wno-unknown-pragmas Wswitch-enum)
+       if test "x$cf_with_cxx" = xyes ; then
                CF_GXX_WARNINGS(Wno-unused)
        fi
 fi
@@ -1258,7 +1546,6 @@ if test -n "$GCC"
 then
        if test "$with_assertions" = no
        then
-               AC_DEFINE(NDEBUG)
                CPPFLAGS="$CPPFLAGS -DNDEBUG"
        else
                CF_ADD_ADAFLAGS(-gnata)
@@ -1267,23 +1554,23 @@ fi
 
 ###    use option --disable-leaks to suppress "permanent" leaks, for testing
 CF_DISABLE_LEAKS
-AC_DEFINE(HAVE_NC_ALLOC_H)
+AC_DEFINE(HAVE_NC_ALLOC_H,1,[Define to 1 if we have nc_alloc.h header])
 
 ###    use option --enable-expanded to generate certain macros as functions
 AC_ARG_ENABLE(expanded,
        [  --enable-expanded       test: generate functions for certain macros],
-       [test "$enableval" = yes && AC_DEFINE(NCURSES_EXPANDED)])
+       [test "x$enableval" = xyes && AC_DEFINE(NCURSES_EXPANDED,1,[Define to 1 to generate functions for certain macros])])
 
 ###    use option --disable-macros to suppress macros in favor of functions
 AC_ARG_ENABLE(macros,
        [  --disable-macros        test: use functions rather than macros],
-       [test "$enableval" = no && AC_DEFINE(NCURSES_NOMACROS)])
+       [test "$enableval" = no && AC_DEFINE(NCURSES_NOMACROS,1,[Define to 1 to use functions rather than macros])])
 
 # Normally we only add trace() to the debug-library.  Allow this to be
 # extended to all models of the ncurses library:
 cf_all_traces=no
 case "$CFLAGS $CPPFLAGS" in
-*-DTRACE*)
+(*-DTRACE*)
        cf_all_traces=yes
        ;;
 esac
@@ -1295,10 +1582,11 @@ AC_ARG_WITH(trace,
 [cf_with_trace=$cf_all_traces])
 AC_MSG_RESULT($cf_with_trace)
 
-if test "$cf_with_trace" = yes ; then
+if test "x$cf_with_trace" = xyes ; then
        LIB_TRACING=all
        ADA_TRACE=TRUE
        CF_ADD_CFLAGS(-DTRACE)
+       AC_DEFINE(HAVE__TRACEF,1,[Define to 1 if we have _tracef function])
 else
        LIB_TRACING=DEBUG
        ADA_TRACE=FALSE
@@ -1306,21 +1594,25 @@ fi
 
 AC_SUBST(ADA_TRACE)
 
+CF_DISABLE_GNAT_PROJECTS
+
 ###    Checks for libraries.
-case $cf_cv_system_name in #(vi
-*mingw32*) #(vi
+case $cf_cv_system_name in
+(*mingw32*|*mingw64*)
+       CPPFLAGS="$CPPFLAGS -DWINVER=0x0501 -DWIN32_LEAN_AND_MEAN"
+       LIBS=" -lpsapi $LIBS"
        ;;
-*)
+(*)
 AC_CHECK_FUNC(gettimeofday,
-       AC_DEFINE(HAVE_GETTIMEOFDAY),[
+       AC_DEFINE(HAVE_GETTIMEOFDAY,1,[Define to 1 if we have gettimeofday function]),[
 
 AC_CHECK_LIB(bsd, gettimeofday,
-       AC_DEFINE(HAVE_GETTIMEOFDAY)
+       AC_DEFINE(HAVE_GETTIMEOFDAY,1,[Define to 1 if we have gettimeofday function])
        CF_ADD_LIB(bsd))])dnl CLIX: bzero, select, gettimeofday
        ;;
 esac
 
-CF_MATH_LIB(MATH_LIB,sin(x))
+CF_MATH_LIB(MATH_LIB,pow(sin(x),x))
 AC_SUBST(MATH_LIB)
 
 ###    Checks for header files.
@@ -1353,7 +1645,7 @@ CF_GETOPT_HEADER
 
 # check for ISC (this may also define _POSIX_SOURCE)
 # Note: even non-Posix ISC needs <sys/bsdtypes.h> to declare fd_set
-if test "$ISC" = yes ; then
+if test "x$ISC" = xyes ; then
        AC_CHECK_LIB(cposix,main)
        AC_CHECK_LIB(inet,bzero,CF_ADD_LIB(inet))dnl also 'select()'
 fi
@@ -1397,23 +1689,44 @@ AC_CHECK_FUNCS( \
 getcwd \
 getegid \
 geteuid \
+getopt \
 getttynam \
 issetugid \
 poll \
+putenv \
 remove \
 select \
 setbuf \
 setbuffer \
+setenv \
 setvbuf \
 sigaction \
 sigvec \
 strdup \
 strstr \
+sysconf \
 tcgetpgrp \
 times \
+tsearch \
 vsnprintf \
 )
-if test "$with_getcap" = "yes" ; then
+
+if test "x$ac_cv_func_getopt" = xno && \
+   test "x$cf_with_progs$cf_with_tests" != xnono; then
+       AC_MSG_ERROR(getopt is required for building programs)
+fi
+
+if test "x$with_safe_sprintf" = xyes
+then
+       if test "x$ac_cv_func_vsnprintf" = xyes
+       then
+               AC_MSG_WARN(will use vsnprintf instead of safe-sprintf option)
+       else
+               AC_DEFINE(USE_SAFE_SPRINTF,1,[Define to 1 to compile with experimental safe-sprintf code])
+       fi
+fi
+
+if test "x$with_getcap" = "xyes" ; then
        CF_CGETENT
 fi
 
@@ -1428,13 +1741,13 @@ CF_MKSTEMP
 CF_SUBST_IF(["$cf_cv_func_vsscanf" = vsscanf], HAVE_VSSCANF, 1, 0)
 
 dnl FIXME (may need this) AC_SYS_RESTARTABLE_SYSCALLS
-if test "$cross_compiling" = yes ; then
+if test "x$cross_compiling" = xyes ; then
        AC_MSG_WARN(cross compiling: assume setvbuf params not reversed)
 else
        AC_FUNC_SETVBUF_REVERSED
 fi
-AC_TYPE_SIGNAL
 AC_CHECK_TYPE(intptr_t, long)
+AC_CHECK_TYPE(ssize_t, int)
 CF_TYPE_SIGACTION
 CF_SIZECHANGE
 CF_FUNC_MEMMOVE
@@ -1445,17 +1758,17 @@ AC_FUNC_VFORK
 # special check for test/ditto.c
 CF_FUNC_OPENPTY
 if test "$cf_cv_func_openpty" != no ; then
-    AC_DEFINE_UNQUOTED(USE_OPENPTY_HEADER,<$cf_cv_func_openpty>)
-    AC_DEFINE(USE_XTERM_PTY)
-    if test "$cf_cv_lib_util" = yes ; then
-        CF_ADD_LIB(util,TEST_LIBS)
-    fi
+       AC_DEFINE_UNQUOTED(USE_OPENPTY_HEADER,<$cf_cv_func_openpty>,[Define to actual header for openpty function])
+       AC_DEFINE(USE_XTERM_PTY,1,[Define to 1 if we should assume xterm pseudoterminal interface])
+       if test "x$cf_cv_lib_util" = xyes ; then
+               CF_ADD_LIB(util,TEST_LIBS)
+       fi
 fi
 AC_SUBST(TEST_LIBS)
 AC_SUBST(TEST_LIBS2)
 
 if test "$with_hashed_db" != no ; then
-       AC_DEFINE(USE_HASHED_DB)
+       AC_DEFINE(USE_HASHED_DB,1,[Define to 1 if we should build terminfo in hashed database])
        CF_HASHED_DB($with_hashed_db)
 fi
 
@@ -1472,16 +1785,16 @@ CF_BOOL_DECL(cf_cv_cc_bool_type)
 if test -n "$CXX" ; then
        AC_LANG_CPLUSPLUS
        CF_STDCPP_LIBRARY
-       CF_PROG_CC_C_O(CXX)
+       CF_PROG_CC_C_O(CXX,[$CXXFLAGS $CPPFLAGS])
 
        case $GXX_VERSION in
-       1*|2.[0-6]*)
+       (1*|2.[0-6]*)
                cf_cxx_library=yes
                ;;
-       *-2.7*|2.7*)
+       (*-2.7*|2.7*)
                CF_GPP_LIBRARY
                ;;
-       *)
+       (*)
                cf_cxx_library=no
                ;;
        esac
@@ -1515,9 +1828,9 @@ else
                        CF_BOOL_SIZE
                else
                        AC_MSG_CHECKING(for fallback type of bool)
-                       case "$host_cpu" in #(vi
-                       i?86)   cf_cv_type_of_bool=char ;; #(vi
-                       *)      cf_cv_type_of_bool=int  ;;
+                       case "$host_cpu" in
+                       (i?86)  cf_cv_type_of_bool=char ;;
+                       (*)     cf_cv_type_of_bool=int  ;;
                        esac
                        AC_MSG_RESULT($cf_cv_type_of_bool)
                fi
@@ -1565,24 +1878,14 @@ dnl Check for availability of GNU Ada Translator (GNAT).
 dnl At the moment we support no other Ada95 compiler.
        if test "$cf_with_ada" != "no" ; then
                CF_PROG_GNAT
-               if test "$cf_cv_prog_gnat_correct" = yes; then
+               if test "x$cf_cv_prog_gnat_correct" = xyes; then
                        CF_ADD_ADAFLAGS(-gnatpn)
+                       CF_FIXUP_ADAFLAGS
 
-                       # make ADAFLAGS consistent with CFLAGS
-                       case "$CFLAGS" in
-                       *-g*)
-                               CF_ADD_ADAFLAGS(-g)
-                               ;;
-                       esac
-                       case "$CFLAGS" in
-                       *-O*)
-                               CF_ADD_ADAFLAGS(-O3)
-                               ;;
-                       esac
+                       CF_GNATPREP_OPT_T
 
                        CF_GNAT_GENERICS
                        CF_GNAT_SIGINT
-                       CF_GNAT_PRAGMA_UNREF
                        CF_GNAT_PROJECTS
 
                        CF_WITH_ADA_COMPILER
@@ -1599,6 +1902,11 @@ else
        cf_with_ada=no
 fi
 
+# do this "late" to avoid conflict with header-checks
+if test "x$with_widec" = xyes ; then
+       AC_CHECK_SIZEOF(wchar_t)
+fi
+
 ### Construct the ncurses library-subsets, if any, from this set of keywords:
 ###    none, base, ext_funcs, ext_tinfo, ticlib, termlib, widechar
 ###
@@ -1612,7 +1920,7 @@ fi
 AC_MSG_CHECKING(for library subsets)
 LIB_SUBSETS=
 
-if test "$cf_with_progs" = yes || test "$with_ticlib" != no || test "$with_termcap" != no; then
+if test "x$cf_with_progs" = xyes || test "$with_ticlib" != no || test "$with_termcap" != no; then
        LIB_SUBSETS="${LIB_SUBSETS}ticlib"
        if test "$with_ticlib" != no ; then
                LIB_SUBSETS="${LIB_SUBSETS} "
@@ -1622,7 +1930,7 @@ if test "$cf_with_progs" = yes || test "$with_ticlib" != no || test "$with_termc
 fi
 
 LIB_SUBSETS="${LIB_SUBSETS}termlib"
-test "$with_ext_funcs" = yes && LIB_SUBSETS="${LIB_SUBSETS}+ext_tinfo"
+test "x$with_ext_funcs" = xyes && LIB_SUBSETS="${LIB_SUBSETS}+ext_tinfo"
 
 if test "$with_termlib" != no ; then
        LIB_SUBSETS="${LIB_SUBSETS} "
@@ -1636,18 +1944,19 @@ LIB_SUBSETS="${LIB_SUBSETS}base"
 # base library (so it resides in base).
 if test "$with_term_driver" != no ; then
        LIB_SUBSETS="${LIB_SUBSETS}+port_drivers"
-       case $cf_cv_system_name in #(vi
-       *mingw32*) #(vi
+       case $cf_cv_system_name in
+       (*mingw32*|*mingw64*)
                LIB_SUBSETS="${LIB_SUBSETS}+port_tinfo+port_win32con"
+               CPPFLAGS="$CPPFLAGS -DUSE_WIN32CON_DRIVER"
                ;;
-       *) #(vi
+       (*)
                LIB_SUBSETS="${LIB_SUBSETS}+port_tinfo"
                ;;
        esac
 fi
 
-test "$with_widec"     = yes && LIB_SUBSETS="${LIB_SUBSETS}+widechar"
-test "$with_ext_funcs" = yes && LIB_SUBSETS="${LIB_SUBSETS}+ext_funcs"
+test "x$with_widec"     = xyes && LIB_SUBSETS="${LIB_SUBSETS}+widechar"
+test "x$with_ext_funcs" = xyes && LIB_SUBSETS="${LIB_SUBSETS}+ext_funcs"
 
 AC_MSG_RESULT($LIB_SUBSETS)
 
@@ -1671,20 +1980,24 @@ CF_OBJ_SUBDIR($DFT_LWR_MODEL,DFT_OBJ_SUBDIR)dnl
 AC_SUBST(DFT_OBJ_SUBDIR)dnl the default object-directory ("obj")
 AC_MSG_RESULT($DFT_OBJ_SUBDIR)
 
-# libtool thinks it can make c++ shared libraries (perhaps only g++)
-if test "$cf_with_cxx" = yes ; then
+if test "x$cf_with_cxx" = xyes ; then
 AC_MSG_CHECKING(c++ library-dependency suffix)
 if test "$with_libtool" != "no"; then
+       # libtool thinks it can make c++ shared libraries (perhaps only g++)
+       CXX_LIB_SUFFIX=$DFT_DEP_SUFFIX
+elif test "$with_shared_cxx" != "no"; then
+       # also for g++ users...
        CXX_LIB_SUFFIX=$DFT_DEP_SUFFIX
 else
-       CF_LIB_SUFFIX(normal,CXX_LIB_SUFFIX,CXX_DEP_SUFFIX)dnl we normally make a static library
+       # we normally make a static library because C/C++ library rules differ
+       CF_LIB_SUFFIX(normal,CXX_LIB_SUFFIX,CXX_DEP_SUFFIX)
 fi
 AC_MSG_RESULT($CXX_LIB_SUFFIX)
 AC_SUBST(CXX_LIB_SUFFIX)
 fi
 
 # do not want -ldl in build except as needed for -lncurses dependency
-if test "$with_dlsym" = yes ; then
+if test "x$with_dlsym" = xyes ; then
 if test $DFT_LWR_MODEL = shared || \
    test $DFT_LWR_MODEL = libtool ; then
        CF_REMOVE_LIB(LIBS,$LIBS,dl)
@@ -1695,27 +2008,41 @@ fi
 # TICS_LIST and TINFO_LIST are needed to build libtic.so and libterm.so, but
 # do not need libdl
 TICS_LIST=
-if test "$with_dlsym" = yes ; then
+if test "x$with_dlsym" = xyes ; then
        CF_REMOVE_LIB(TINFO_LIST,$SHLIB_LIST,dl)
 fi
 
+USE_ARG_SUFFIX="${DFT_ARG_SUFFIX}${EXTRA_SUFFIX}"
+USE_LIB_SUFFIX="${LIB_SUFFIX}${EXTRA_SUFFIX}"
+USE_CFG_SUFFIX=${DFT_ARG_SUFFIX}${cf_cv_abi_version}
+if test -n "$EXTRA_SUFFIX" && test "x$EXTRA_SUFFIX" != "x${cf_cv_abi_version}"
+then
+       USE_CFG_SUFFIX="${USE_CFG_SUFFIX}${EXTRA_SUFFIX}"
+fi
+AC_SUBST(USE_ARG_SUFFIX)
+AC_SUBST(USE_CFG_SUFFIX)
+AC_SUBST(USE_LIB_SUFFIX)
+
 if test "$with_ticlib" != no ; then
 
-       if test "$with_ticlib" != yes ; then
+       if test "x$with_ticlib" != xyes ; then
                TICS_NAME=$with_ticlib
-               TICS_ARG_SUFFIX="${with_ticlib}`echo ${DFT_ARG_SUFFIX}|sed -e "s/^${LIB_SUFFIX}//"`"
+               TICS_SUFFIX="`echo ${DFT_LIB_SUFFIX}|sed -e "s/^${USE_LIB_SUFFIX}//"`"
+               TICS_ARG_SUFFIX="${with_ticlib}`echo ${USE_ARG_SUFFIX}|sed -e "s/^${LIB_SUFFIX}//"`"
                TICS_DEP_SUFFIX="${with_ticlib}`echo ${DFT_DEP_SUFFIX}|sed -e "s/^${LIB_SUFFIX}//"`"
                TICS_LIB_SUFFIX="${with_ticlib}"
        else
-               TICS_ARG_SUFFIX="${TICS_NAME}${DFT_ARG_SUFFIX}"
+               TICS_SUFFIX=${DFT_LIB_SUFFIX}
+               TICS_ARG_SUFFIX="${TICS_NAME}${USE_ARG_SUFFIX}"
                TICS_DEP_SUFFIX="${TICS_NAME}${DFT_DEP_SUFFIX}"
-               TICS_LIB_SUFFIX="${TICS_NAME}${LIB_SUFFIX}"
+               TICS_LIB_SUFFIX="${TICS_NAME}${USE_LIB_SUFFIX}"
        fi
        TICS_LDFLAGS="-L${LIB_DIR}"
-       TICS_LIBS="-l${TICS_LIB_SUFFIX}"
+       TICS_LIBS="-l${TICS_ARG_SUFFIX}"
 else
+       TICS_SUFFIX=${DFT_LIB_SUFFIX}
        TICS_LDFLAGS="-L${LIB_DIR}"
-       TICS_LIBS="-l${LIB_NAME}${DFT_ARG_SUFFIX}"
+       TICS_LIBS="-l${LIB_NAME}${USE_ARG_SUFFIX}"
 fi
 AC_SUBST(TICS_ARG_SUFFIX)
 AC_SUBST(TICS_DEP_SUFFIX)
@@ -1725,17 +2052,17 @@ AC_SUBST(TICS_LIBS)
 
 if test "$with_termlib" != no ; then
 
-       if test "$with_termlib" != yes ; then
+       if test "x$with_termlib" != xyes ; then
                TINFO_NAME=$with_termlib
-               TINFO_SUFFIX="`echo ${DFT_LIB_SUFFIX}|sed -e "s/^${LIB_SUFFIX}//"`"
-               TINFO_ARG_SUFFIX="${with_termlib}`echo ${DFT_ARG_SUFFIX}|sed -e "s/^${LIB_SUFFIX}//"`"
+               TINFO_SUFFIX="`echo ${DFT_LIB_SUFFIX}|sed -e "s/^${USE_LIB_SUFFIX}//"`"
+               TINFO_ARG_SUFFIX="${with_termlib}`echo ${USE_ARG_SUFFIX}|sed -e "s/^${LIB_SUFFIX}//"`"
                TINFO_DEP_SUFFIX="${with_termlib}`echo ${DFT_DEP_SUFFIX}|sed -e "s/^${LIB_SUFFIX}//"`"
                TINFO_LIB_SUFFIX="${with_termlib}"
        else
                TINFO_SUFFIX=${DFT_LIB_SUFFIX}
-               TINFO_ARG_SUFFIX="${TINFO_NAME}${DFT_ARG_SUFFIX}"
+               TINFO_ARG_SUFFIX="${TINFO_NAME}${USE_ARG_SUFFIX}"
                TINFO_DEP_SUFFIX="${TINFO_NAME}${DFT_DEP_SUFFIX}"
-               TINFO_LIB_SUFFIX="${TINFO_NAME}${LIB_SUFFIX}"
+               TINFO_LIB_SUFFIX="${TINFO_NAME}${USE_LIB_SUFFIX}"
        fi
 
        TEST_DEPS="${LIB_DIR}/${LIB_PREFIX}${TINFO_DEP_SUFFIX}"
@@ -1751,9 +2078,9 @@ if test "$with_termlib" != no ; then
                TEST_ARGS="-l${TINFO_ARG_SUFFIX}"
                TEST_ARG2="-l${TINFO_ARG_SUFFIX}"
                if test "x$with_term_driver" != xno ; then
-                       TICS_LIST="$SHLIB_LIST -l${LIB_NAME}${DFT_ARG_SUFFIX}"
-                       TICS_LIBS="$TICS_LIBS -l${LIB_NAME}${DFT_ARG_SUFFIX}"
-                       TINFO_LIBS="-l${LIB_NAME}${DFT_ARG_SUFFIX} $TEST_ARGS"
+                       TICS_LIST="$SHLIB_LIST -l${LIB_NAME}${USE_ARG_SUFFIX}"
+                       TICS_LIBS="$TICS_LIBS -l${LIB_NAME}${USE_ARG_SUFFIX}"
+                       TINFO_LIBS="-l${LIB_NAME}${USE_ARG_SUFFIX} $TEST_ARGS"
                else
                        TICS_LIST="$SHLIB_LIST -l${TINFO_LIB_SUFFIX}"
                        TINFO_LIBS="$TEST_ARGS"
@@ -1765,21 +2092,21 @@ else
        # the next lines are needed for linking libtic over libncurses
        TINFO_NAME=${LIB_NAME}
        TINFO_SUFFIX=${DFT_LIB_SUFFIX}
-       TINFO_ARG_SUFFIX=${LIB_NAME}${DFT_ARG_SUFFIX}
-       if test "$with_tic_depends" = yes ; then
-               TICS_LIST="$SHLIB_LIST -l${LIB_NAME}${DFT_ARG_SUFFIX}"
+       TINFO_ARG_SUFFIX=${LIB_NAME}${USE_ARG_SUFFIX}
+       if test "x$with_tic_depends" = xyes ; then
+               TICS_LIST="$SHLIB_LIST -l${LIB_NAME}${USE_ARG_SUFFIX}"
        else
                TICS_LIST="$SHLIB_LIST"
        fi
 
        TINFO_LDFLAGS="-L${LIB_DIR}"
-       TINFO_LIBS="-l${LIB_NAME}${DFT_ARG_SUFFIX}"
+       TINFO_LIBS="-l${LIB_NAME}${USE_ARG_SUFFIX}"
 fi
 
 if test "$DFT_LWR_MODEL" = shared ; then
-       case $cf_cv_system_name in #(vi
-       cygwin*)
-               # "lib" files have ".dll.a" suffix, "cyg" files have ".dll"
+       case $cf_cv_system_name in
+       (cygwin*|msys*)
+               # "lib" files have ".dll.a" suffix, "cyg"or "msys-" files have ".dll"
                TINFO_SUFFIX=.dll
                ;;
        esac
@@ -1791,12 +2118,12 @@ AC_SUBST(TINFO_LIB_SUFFIX)
 AC_SUBST(TINFO_LDFLAGS)
 AC_SUBST(TINFO_LIBS)
 
-if test "$with_dlsym" = yes ; then
+if test "x$with_dlsym" = xyes ; then
        CF_REMOVE_LIB(TICS_LIST,$TICS_LIST,dl)
 fi
 
 if test "$DFT_LWR_MODEL" = "libtool"; then
-    OBJEXT=lo
+       OBJEXT=lo
 fi
 
 # needed for Ada95
@@ -1804,16 +2131,21 @@ TINFO_LDFLAGS2=`echo "$TINFO_LDFLAGS" | sed -e 's,-L\.\./,-L../../,'`
 AC_SUBST(TINFO_LDFLAGS2)
 
 case $DFT_LWR_MODEL in
-normal|debug|profile)
+(normal|debug|profile)
        CF_LDFLAGS_STATIC
        ;;
 esac
 
 AC_MSG_CHECKING(where we will install curses.h)
-test "$with_overwrite" = no && \
-test "x$includedir" = 'x${prefix}/include' && \
-       includedir='${prefix}/include/ncurses'${LIB_SUFFIX}
-AC_MSG_RESULT($includedir)
+AC_SUBST(includesubdir)
+includesubdir=
+if test "$with_overwrite" = no && \
+ ( test "x$includedir" = 'x${prefix}/include' || \
+   test "x$includedir" = "x${prefix}/include" )
+then
+       includesubdir="/ncurses${USE_LIB_SUFFIX}"
+fi
+AC_MSG_RESULT(${includedir}${includesubdir})
 
 ### Resolve a conflict between normal and wide-curses by forcing applications
 ### that will need libutf8 to add it to their configure script.
@@ -1835,7 +2167,7 @@ NCURSES_TREE=
 AC_SUBST(NCURSES_TREE)
 
 ### predefined stuff for the test programs
-AC_DEFINE(HAVE_SLK_COLOR)
+AC_DEFINE(HAVE_SLK_COLOR,1,[Define to 1 if we have slk_color for test-programs])
 
 ### Construct the list of subdirectories for which we'll customize makefiles
 ### with the appropriate compile-rules.
@@ -1843,43 +2175,40 @@ AC_DEFINE(HAVE_SLK_COLOR)
 CF_SRC_MODULES($modules_to_build)
 
 if test "x$cf_with_ada" = "xyes" && test "x$cf_cv_prog_gnat_correct" = "xyes"; then
-   SUB_MAKEFILES="$SUB_MAKEFILES Ada95/gen/adacurses${DFT_ARG_SUFFIX}-config:Ada95/gen/adacurses-config.in"
-   SUB_MAKEFILES="$SUB_MAKEFILES man/adacurses${DFT_ARG_SUFFIX}-config.1:man/MKada_config.in"
+   SUB_MAKEFILES="$SUB_MAKEFILES Ada95/gen/adacurses${USE_CFG_SUFFIX}-config:Ada95/gen/adacurses-config.in"
+   SUB_MAKEFILES="$SUB_MAKEFILES man/adacurses${USE_CFG_SUFFIX}-config.1:man/MKada_config.in"
 fi
 
 CF_DIRS_TO_MAKE
 
 # symbols that differ when compiling Ada95 by itself.
-NCURSES_SHLIB2='sh $(top_srcdir)/misc/shlib'
+NCURSES_SHLIB2=$SHELL' $(top_srcdir)/misc/shlib'
 AC_SUBST(NCURSES_SHLIB2)
 
 # values to use as strings
-AC_DEFINE_UNQUOTED(NCURSES_PATHSEP,'$PATH_SEPARATOR')
+AC_DEFINE_UNQUOTED(NCURSES_PATHSEP,'$PATH_SEPARATOR',[Define to override ':' as library path-separator])
 
-AC_DEFINE_UNQUOTED(NCURSES_VERSION_STRING, "${NCURSES_MAJOR}.${NCURSES_MINOR}.${NCURSES_PATCH}")
+AC_DEFINE_UNQUOTED(NCURSES_VERSION_STRING, "${NCURSES_MAJOR}.${NCURSES_MINOR}.${NCURSES_PATCH}",[Define to 1 if machine has ample memory for tic])
 
 ### Now that we're done running tests, add the compiler-warnings, if any
 CF_ADD_CFLAGS($EXTRA_CFLAGS)
 
 ### Define substitutions for header files to avoid name-pollution
-CF_SUBST_IF(["$cf_cv_have_tcgetattr" = yes], HAVE_TCGETATTR, 1, 0)
-CF_SUBST_IF(["$ac_cv_header_termio_h" = yes], HAVE_TERMIO_H, 1, 0)
-CF_SUBST_IF(["$ac_cv_header_termios_h" = yes], HAVE_TERMIOS_H, 1, 0)
+CF_SUBST_IF(["x$cf_cv_have_tcgetattr" = xyes], HAVE_TCGETATTR, 1, 0)
+CF_SUBST_IF(["x$ac_cv_header_stdint_h" = xyes], HAVE_STDINT_H, 1, 0)
+CF_SUBST_IF(["x$ac_cv_header_termio_h" = xyes], HAVE_TERMIO_H, 1, 0)
+CF_SUBST_IF(["x$ac_cv_header_termios_h" = xyes], HAVE_TERMIOS_H, 1, 0)
 
 ################################################################################
-test "$use_database" = yes && \
+test "x$use_database" = xyes && \
 SUB_MAKEFILES="$SUB_MAKEFILES misc/run_tic.sh:misc/run_tic.in"
 
 SUB_MAKEFILES="$SUB_MAKEFILES misc/ncurses-config:misc/ncurses-config.in"
-SUB_MAKEFILES="$SUB_MAKEFILES man/ncurses${DFT_ARG_SUFFIX}${cf_cv_abi_version}-config.1:man/MKncu_config.in"
+SUB_MAKEFILES="$SUB_MAKEFILES man/ncurses${USE_CFG_SUFFIX}-config.1:man/MKncu_config.in"
 
-if test x"$enable_pc_files" = xyes ; then \
+if test "x$enable_pc_files" = xyes && test -z "$MAKE_PC_FILES" ; then
 SUB_MAKEFILES="$SUB_MAKEFILES misc/gen-pkgconfig:misc/gen-pkgconfig.in"
-MAKE_PC_FILES=
-else
-MAKE_PC_FILES="#"
 fi
-AC_SUBST(MAKE_PC_FILES)
 AC_SUBST(cross_compiling)
 
 AC_PATH_PROG(TIC_PATH,tic,unknown,$PATH:/usr/local/ncurses/bin)
@@ -1902,8 +2231,150 @@ AC_SUBST(MAKE_TESTS)
 ADAHTML_DIR=../../doc/html/ada
 AC_SUBST(ADAHTML_DIR)
 
+# these could be configurable, but are not currently
+PANEL_NAME=panel
+MENU_NAME=menu
+FORM_NAME=form
+CXX_NAME=ncurses++
+
+AC_SUBST(PANEL_NAME)
+AC_SUBST(MENU_NAME)
+AC_SUBST(FORM_NAME)
+AC_SUBST(CXX_NAME)
+
+# workaround for OS/2 (20151017)
+case $cf_cv_system_name in
+(os2*)
+       LIBTOOL_OPTS_CXX="-os2dllname ncurs++"
+       ;;
+(*)
+       LIBTOOL_OPTS_CXX=
+       ;;
+esac
+AC_SUBST(LIBTOOL_OPTS_CXX)
+
+# workaround for g++ versus Solaris (20131116)
+case $cf_cv_system_name in
+(solaris2*)
+       case "x$CPPFLAGS" in
+       (*-D_XOPEN_SOURCE_EXTENDED*)
+               CF_VERBOSE(moving _XOPEN_SOURCE_EXTENDED to work around g++ problem)
+               CFLAGS="$CFLAGS -D_XOPEN_SOURCE_EXTENDED"
+               CPPFLAGS=`echo "x$CPPFLAGS" | sed -e  's/^.//' -e 's/-D_XOPEN_SOURCE_EXTENDED//'`
+               ;;
+       esac
+       ;;
+esac
+
+# Help to automatically enable the extended curses features when using either
+# the *-config or the ".pc" files by adding defines.
+AC_MSG_CHECKING(for defines to add to ncurses${USE_CFG_SUFFIX}-config script)
+PKG_CFLAGS=
+for cf_loop1 in $CPPFLAGS_after_XOPEN
+do
+       cf_found=no
+       for cf_loop2 in $CPPFLAGS_before_XOPEN
+       do
+               if test "x$cf_loop1" = "x$cf_loop2"
+               then
+                       cf_found=yes
+                       break
+               fi
+       done
+       test "$cf_found" = no && PKG_CFLAGS="$PKG_CFLAGS $cf_loop1"
+done
+AC_MSG_RESULT($PKG_CFLAGS)
+AC_SUBST(PKG_CFLAGS)
+
+# AC_CHECK_SIZEOF demands a literal parameter, no variables.  So we do this.
+case "x$NCURSES_OSPEED" in
+(*short*)
+       cf_compatible=1
+       ;;
+(*)
+       cf_compatible=0
+       ;;
+esac
+AC_DEFINE_UNQUOTED(NCURSES_OSPEED_COMPAT,$cf_compatible,[Define to 1 if termcap variable ospeed is short])
+
+case "x$cf_cv_typeof_chtype" in
+(xshort|xint|xlong)
+       cf_cv_typeof_chtype="unsigned $cf_cv_typeof_chtype"
+       ;;
+esac
+
+case "x$cf_cv_typeof_mmask_t" in
+(xshort|xint|xlong)
+       cf_cv_typeof_mmask_t="unsigned $cf_cv_typeof_mmask_t"
+       ;;
+esac
+
+# substitute into misc/Makefile to suppress
+# (un)install.data from the
+# (un)install rules.
+if test "x$cf_with_db_install" = "xno"; then
+       MISC_INSTALL_DATA=
+       MISC_UNINSTALL_DATA=
+else
+       MISC_INSTALL_DATA=install.data
+       MISC_UNINSTALL_DATA=uninstall.data
+fi
+AC_SUBST(MISC_INSTALL_DATA)
+AC_SUBST(MISC_UNINSTALL_DATA)
+
+if test "x$cf_with_db_install" = "xno" || test "x$TERMINFO_SRC" = "xno"; then
+       MAKE_DATABASE="#"
+else
+       MAKE_DATABASE="$MAKE_TERMINFO"
+fi
+AC_SUBST(MAKE_DATABASE)
+
 SUB_SCRIPTS=
 
+dnl Override the package used for exported symbols
+if test -n "$PACKAGE"
+then
+       PACKAGE="${PACKAGE}${DFT_ARG_SUFFIX}"
+       export PACKAGE
+       echo "package: $PACKAGE"
+fi
+
+UNALTERED_SYMS=
+cf_filter_syms=no
+
+if test -n "$RESULTING_SYMS"
+then
+       cf_filter_syms=$cf_dft_filter_syms
+       CF_VERBOSE(will map symbols to ABI=$cf_cv_abi_version)
+fi
+
+if test "x$WILDCARD_SYMS" = xno
+then
+       cf_filter_syms=yes
+fi
+
+test "x$cf_with_trace" = xyes && NCURSES_INLINE=
+
+UNALTERED_SYMS=`echo "$RESULTING_SYMS" | sed -e 's/\\$/\\\\$/g'`
+if test $cf_filter_syms = yes
+then
+       RESULTING_SYMS=resulting.map
+fi
+AC_SUBST(UNALTERED_SYMS)
+
+if test "x$cross_compiling" = xyes ; then
+       ADAGEN_LDFLAGS='$(CROSS_LDFLAGS)'
+       CHECK_BUILD="#"
+else
+       ADAGEN_LDFLAGS='$(NATIVE_LDFLAGS)'
+       CHECK_BUILD=
+fi
+AC_SUBST(ADAGEN_LDFLAGS)
+AC_SUBST(CHECK_BUILD)
+AC_SUBST(PRIVATE_LIBS)
+
+AC_DEFINE(HAVE_CURSES_DATA_BOOLNAMES,1,[definition needed for in-tree build of tack])
+
 AC_OUTPUT( \
        include/MKterm.h.awk \
        include/curses.head:include/curses.h.in \
@@ -1914,7 +2385,7 @@ AC_OUTPUT( \
        $SUB_MAKEFILES \
        Makefile,[
 if test "x$cf_with_tests" != xno ; then
-       CF_PRG_RULES([$srcdir/test/mk-test.awk INSTALL=no ECHO_LINK="$ECHO_LINK"], test)
+       CF_PRG_RULES([$srcdir/test/mk-test.awk INSTALL=no ECHO_LINK="$ECHO_LD"], test)
 fi
 CF_LIB_RULES($SRC_SUBDIRS)
 
@@ -1928,9 +2399,11 @@ fi
 ### configuration-run into config.status
 
 AWK="$AWK"
+ALTERNATE_SYMS="$ALTERNATE_SYMS"
 DFT_ARG_SUFFIX="$DFT_ARG_SUFFIX"
 DFT_LWR_MODEL="$DFT_LWR_MODEL"
-ECHO_LINK="$ECHO_LINK"
+ECHO_LD="$ECHO_LD"
+EXTRA_SUFFIX="$EXTRA_SUFFIX"
 LDCONFIG="$LDCONFIG"
 LIBTOOL_VERSION="$LIBTOOL_VERSION"
 LIB_NAME="$LIB_NAME"
@@ -1949,18 +2422,25 @@ TERMINFO="$TERMINFO"
 TICS_ARG_SUFFIX="$TICS_ARG_SUFFIX"
 TICS_LIB_SUFFIX="$TICS_LIB_SUFFIX"
 TICS_NAME="$TICS_NAME"
+TICS_SUFFIX="$TICS_SUFFIX"
 TIC_PATH="$TIC_PATH"
 TINFO_ARG_SUFFIX="$TINFO_ARG_SUFFIX"
 TINFO_LIB_SUFFIX="$TINFO_LIB_SUFFIX"
 TINFO_NAME="$TINFO_NAME"
 TINFO_SUFFIX="$TINFO_SUFFIX"
+UNALTERED_SYMS="$UNALTERED_SYMS"
+USE_ARG_SUFFIX="$USE_ARG_SUFFIX"
+USE_CFG_SUFFIX="$USE_CFG_SUFFIX"
+USE_LIB_SUFFIX="$USE_LIB_SUFFIX"
 USE_OLD_MAKERULES="$USE_OLD_MAKERULES"
+WILDCARD_SYMS="$WILDCARD_SYMS"
 WITH_CURSES_H="$with_curses_h"
-WITH_ECHO="$with_echo"
+WITH_ECHO="${enable_echo:=yes}"
 WITH_OVERWRITE="$with_overwrite"
 cf_LIST_MODELS="$cf_list_models"
 cf_cv_abi_version="$cf_cv_abi_version"
 cf_cv_do_relink="$cf_cv_do_relink"
+cf_cv_do_reranlib="$cf_cv_do_reranlib"
 cf_cv_do_symlinks="$cf_cv_do_symlinks"
 cf_cv_enable_lp64="$cf_cv_enable_lp64"
 cf_cv_enable_opaque="$cf_cv_enable_opaque"
@@ -1976,10 +2456,12 @@ cf_cv_system_name="$cf_cv_system_name"
 cf_cv_term_driver="$with_term_driver"
 cf_with_ada="$cf_with_ada"
 cf_with_cxx_binding="$cf_with_cxx_binding"
+cf_with_db_install="$cf_with_db_install"
 cf_with_manpages="$cf_with_manpages"
 cf_with_tests="$cf_with_tests"
 host="$host"
 target="$target"
+with_shared_cxx="$with_shared_cxx"
 
 ],cat)dnl
 ${MAKE:-make} preinstall