dnl***************************************************************************
dnl Copyright 2018-2024,2025 Thomas E. Dickey                                *
dnl Copyright 1998-2017,2018 Free Software Foundation, Inc.                  *
dnl                                                                          *
dnl Permission is hereby granted, free of charge, to any person obtaining a  *
dnl copy of this software and associated documentation files (the            *
dnl "Software"), to deal in the Software without restriction, including      *
dnl without limitation the rights to use, copy, modify, merge, publish,      *
dnl distribute, distribute with modifications, sublicense, and/or sell       *
dnl copies of the Software, and to permit persons to whom the Software is    *
dnl furnished to do so, subject to the following conditions:                 *
dnl                                                                          *
dnl The above copyright notice and this permission notice shall be included  *
dnl in all copies or substantial portions of the Software.                   *
dnl                                                                          *
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
dnl IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
dnl DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
dnl OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
dnl THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
dnl                                                                          *
dnl Except as contained in this notice, the name(s) of the above copyright   *
dnl holders shall not be used in advertising or otherwise to promote the     *
dnl sale, use or other dealings in this Software without prior written       *
dnl authorization.                                                           *
dnl***************************************************************************
dnl
dnl Author: Thomas E. Dickey 1995-on
dnl
dnl $Id: configure.in,v 1.809 2025/09/13 15:40:47 tom Exp $
dnl Process this file with autoconf to produce a configure script.
dnl
dnl For additional information, see
dnl     https://invisible-island.net/autoconf/
dnl     https://invisible-island.net/autoconf/my-autoconf.html
dnl
dnl ---------------------------------------------------------------------------
AC_PREREQ(2.52.20210101)
AC_REVISION($Revision: 1.809 $)
AC_INIT(ncurses/base/lib_initscr.c)
AC_CONFIG_HEADER(include/ncurses_cfg.h:include/ncurses_cfg.hin)

AC_DEFUN([AC_PATH_XTRA],[])dnl ignore dependencies on this

CF_TOP_BUILDDIR
CF_SUBST_NCURSES_VERSION
CF_VERSION_INFO(NCURSES,ncurses)

CF_WITH_REL_VERSION(NCURSES)
CF_NCURSES_WITH_ABI_VERSION

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

### override ABI version, e.g., packagers
CF_WITH_ABI_ALTERED

###	Checks for programs.
CF_WITH_ADA
AC_PROG_CPP
AC_PROG_GCC_TRADITIONAL
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
dnl				configure script by not letting us test if C++
dnl				is present, making this option necessary.
AC_MSG_CHECKING(if you want to ensure bool is consistent with C++)
AC_ARG_WITH(cxx,
	[  --without-cxx           do not adjust ncurses bool to match C++],
	[cf_with_cxx=$withval],
	[cf_with_cxx=yes])
AC_MSG_RESULT($cf_with_cxx)
if test "X$cf_with_cxx" = Xno ; then
	CXX=""
	GXX=""
else
	# with autoconf 2.13, we can change the error to a warning:
	pushdef([AC_MSG_ERROR],
		[AC_MSG_RESULT(no)
		 AC_MSG_WARN([You don't have any C++ compiler, too bad])
		cf_with_cxx=no; CXX=""; GXX="";])dnl
	AC_PROG_CXX
	popdef([AC_MSG_ERROR])dnl

	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 "$CXX" = "g++" ; then
		AC_PATH_PROG(CXX,g++)
	fi
	case "x$CXX" in
	(x|xg++)
		AC_MSG_WARN([You don't have any C++ compiler, too bad])
		cf_with_cxx=no; CXX=""; GXX="";
		;;
	esac
fi

CF_GXX_VERSION
case "$GXX_VERSION" in
([[1-9]][[0-9]].*)
	;;
(1.*|2.[[0-6]]*)
	AC_MSG_WARN(templates do not work)
	;;
esac

AC_MSG_CHECKING(if you want to build C++ binding and demo)
AC_ARG_WITH(cxx-binding,
	[  --without-cxx-binding   do not build C++ binding and demo],
	[cf_with_cxx_binding=$withval],
	[cf_with_cxx_binding=$cf_with_cxx])
AC_MSG_RESULT($cf_with_cxx_binding)

AC_MSG_CHECKING(if you want to build with Ada)
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],
	[cf_with_manpages=$withval],
	[cf_with_manpages=yes])
AC_MSG_RESULT($cf_with_manpages)

AC_MSG_CHECKING(if you want to build programs such as tic)
AC_ARG_WITH(progs,
	[  --without-progs         suppress build/install with programs (e.g., tic)],
	[cf_with_progs=$withval],
	[cf_with_progs=yes])
AC_MSG_RESULT($cf_with_progs)

AC_MSG_CHECKING(if you want to build test-programs)
AC_ARG_WITH(tests,
	[  --without-tests         suppress build/install with test-programs],
	[cf_with_tests=$withval],
	[cf_with_tests=yes])
AC_MSG_RESULT($cf_with_tests)

AC_MSG_CHECKING(if you wish to install curses.h)
AC_ARG_WITH(curses-h,
	[  --without-curses-h      install curses.h as ncurses.h only],
	[with_curses_h=$withval],
	[with_curses_h=yes])
AC_MSG_RESULT($with_curses_h)

modules_to_build="ncurses"
test "X$cf_with_progs" != Xno && modules_to_build="$modules_to_build progs"
modules_to_build="$modules_to_build panel menu form"

AC_ARG_PROGRAM

CF_PROG_AWK
CF_PROG_INSTALL
CF_PROG_LINT
CF_PROG_LN_S

AC_SYS_LONG_FILE_NAMES

# 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  name ncurses*X-config file with X],
	[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 "$MAKE_PC_FILES"
then
	AC_MSG_CHECKING(for suffix to add to pkg-config files)
AC_ARG_WITH(pc-suffix,
	[[  --with-pc-suffix[=XXX]  suffix pkg-config files with XXX]],
	[case "x$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,
	[  --enable-mixed-case     tic should assume mixed-case filenames],
	[enable_mixedcase=$enableval],
	[enable_mixedcase=auto])
AC_MSG_RESULT($enable_mixedcase)
if test "$enable_mixedcase" = "auto" ; then
	CF_MIXEDCASE_FILENAMES
else
	cf_cv_mixedcase=$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).
AC_PROG_MAKE_SET
CF_MAKE_PHONY
CF_MAKE_TAGS

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

CF_INSTALL_PREFIX

###############################################################################
CF_HELP_MESSAGE(Build-Tools Needed to Compile Temporary Applications for Cross-compiling:)
# If we're cross-compiling, allow the user to override the tools and their
# options.  The configure script is oriented toward identifying the host
# compiler, etc., but we need a build compiler to generate parts of the source.

case "$cf_cv_system_name" in
(*-msvc*)
	LDFLAGS="$LDFLAGS user32.lib"
	export LDFLAGS
	;;
esac

CF_BUILD_CC

###############################################################################
CF_HELP_MESSAGE(Options to Specify the Libraries Built/Used:)

### Options to allow the user to specify the set of libraries which are used.
### Use "--without-normal --with-shared" to allow the default model to be
### shared, for example.
cf_list_models=""
AC_SUBST(cf_list_models)dnl	the complete list of models ("normal debug")

CF_WITH_LIBTOOL
if test "$with_libtool" != "no" ; then

cf_list_models="$cf_list_models libtool"

else

AC_MSG_CHECKING(if you want to build shared libraries)
AC_ARG_WITH(shared,
	[  --with-shared           generate shared-libraries],
	[with_shared=$withval],
	[with_shared=no])
AC_MSG_RESULT($with_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,
	[  --with-normal           generate normal-libraries (default)],
	[with_normal=$withval],
	[with_normal=yes])
AC_MSG_RESULT($with_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,
	[  --with-debug            generate debug-libraries (default)],
	[with_debug=$withval],
	[with_debug=yes])
AC_MSG_RESULT($with_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,
	[  --with-profile          generate profile-libraries],
	[with_profile=$withval],
	[with_profile=no])
AC_MSG_RESULT($with_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)
test -z "$cf_list_models" && cf_list_models=normal
dnl If we use libtool to generate libraries, then it must be the only
dnl specified model.
test "$with_libtool" != "no" && cf_list_models=libtool
AC_MSG_RESULT($cf_list_models)

### Use the first model as the default, and save its suffix for use in building
### up test-applications.
AC_MSG_CHECKING(for default model)
DFT_LWR_MODEL=`echo "$cf_list_models" | $AWK '{print $1}'`
AC_MSG_RESULT($DFT_LWR_MODEL)

CF_UPPER(DFT_UPR_MODEL,$DFT_LWR_MODEL)dnl

AC_SUBST(DFT_LWR_MODEL)dnl	the default model ("normal")
AC_SUBST(DFT_UPR_MODEL)dnl	the default model ("NORMAL")

TICS_NAME=tic
AC_SUBST(TICS_NAME)

TINFO_NAME=tinfo
AC_SUBST(TINFO_NAME)

LIB_NAME=ncurses
AC_SUBST(LIB_NAME)

LIB_DIR=../lib
LIB_2ND=../../lib

CF_WITH_LIB_PREFIX(cf_prefix)

LIB_SUFFIX=
AC_SUBST(LIB_SUFFIX)
CF_PATHSEP

# headers needed for checks...
AC_CHECK_DECL(exit)
AC_HEADER_DIRENT

###############################################################################

AC_MSG_CHECKING(if you want to build a separate terminfo library)
AC_ARG_WITH(termlib,
	[  --with-termlib          generate separate terminfo library],
	[with_termlib=$withval],
	[with_termlib=no])
AC_MSG_RESULT($with_termlib)

AC_MSG_CHECKING(if you want to build a separate tic library)
AC_ARG_WITH(ticlib,
	[  --with-ticlib           generate separate tic library],
	[with_ticlib=$withval],
	[with_ticlib=no])
AC_MSG_RESULT($with_ticlib)

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 "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 "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=''   ;;
esac
AC_SUBST(LD_MODEL)dnl		the type of link (e.g., -g or -pg)
AC_MSG_RESULT([${LD_MODEL:-(none)}])

case "$DFT_LWR_MODEL" in
(shared)
CF_ENABLE_RPATH
AC_MSG_CHECKING(if shared libraries should be relinked during install)
AC_ARG_ENABLE(relink,
[  --disable-relink        relink shared libraries during install],
[cf_cv_do_relink=$enableval],
[cf_cv_do_relink=yes])
AC_MSG_RESULT($cf_cv_do_relink)
	;;
esac

# we will build libraries one-level down.
rel_builddir=..
CF_SHARED_OPTS
for model in $cf_list_models ; do
	case "$model" in
	(libtool)
		CF_WITH_LIBTOOL_OPTS
		CF_WITH_EXPORT_SYMS
		;;
	(shared)
		if test "$CC_SHARED_OPTS" = "unknown"; then
			AC_ERROR(Shared libraries are not supported in this version)
		fi
		# workaround for inept transition to PIE vs PIC...
		AC_MSG_CHECKING(if current CFLAGS link properly)
		AC_TRY_LINK(
			[#include <stdio.h>],
			[printf("Hello work\\n");],
			[cf_cflags_work=yes],
			[cf_cflags_work=no])
		AC_MSG_RESULT($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 "$DFT_LWR_MODEL" = "shared" && test "x$cf_cv_enable_rpath" != xno; then
	CF_DISABLE_RPATH_HACK
fi

### Depending on the system, someone may use rpath to build ncurses but not
# want users of the package to rely upon that feature.  Give those people an
# option to suppress that detail from EXTRA_LDFLAGS.
EXTRA_PKG_LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"
if test -n "$EXTRA_PKG_LDFLAGS"
then
	AC_MSG_CHECKING(if you want to disable extra LDFLAGS for package-scripts)
	CF_ARG_DISABLE(pkg-ldflags,
		[  --disable-pkg-ldflags   disable extra LDFLAGS for package-scripts],
		[disable_pkg_ldflags=yes],
		[disable_pkg_ldflags=no],
		no)
	AC_MSG_RESULT($disable_pkg_ldflags)
	test "$disable_pkg_ldflags" = yes && EXTRA_PKG_LDFLAGS=
fi
AC_SUBST(EXTRA_PKG_LDFLAGS)

###############################################################################
CF_HELP_MESSAGE(Fine-Tuning Your Configuration:)

###	use option --with-extra-suffix to append suffix to headers and libraries
AC_MSG_CHECKING(for extra suffix to append to header/library paths)
EXTRA_SUFFIX=
AC_ARG_WITH(extra-suffix,
	[[  --with-extra-suffix[=X] append extra suffix X to header/library paths]],
	[case x$withval in
	(xno)
		;;
	(xyes|x)
		EXTRA_SUFFIX=$cf_cv_abi_version
		;;
	(*)
		EXTRA_SUFFIX=$withval
		;;
	esac
	])
AC_MSG_RESULT([${EXTRA_SUFFIX:-(none)}])
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     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)

AC_MSG_CHECKING(if external terminfo-database is used)
AC_ARG_ENABLE(database,
	[  --disable-database      do not use terminfo, only fallbacks/termcap],
	[use_database=$enableval],
	[use_database=yes])
AC_MSG_RESULT($use_database)

case "$host_os" in
(os2*)
	TERMINFO_SRC='${top_srcdir}/misc/emx.src'
	;;
(*)
	TERMINFO_SRC='${top_srcdir}/misc/terminfo.src'
	;;
esac
AC_SUBST(TERMINFO_SRC)

NCURSES_USE_DATABASE=0
if test "$use_database" != no ; then
	NCURSES_USE_DATABASE=1

	AC_MSG_CHECKING(which terminfo source-file will be installed)
	AC_ARG_WITH(database,
		[  --with-database=XXX     specify terminfo source to install],
		[TERMINFO_SRC=$withval])
	AC_MSG_RESULT($TERMINFO_SRC)

	AC_MSG_CHECKING(whether to use hashed database instead of directory/tree)
	AC_ARG_WITH(hashed-db,
		[  --with-hashed-db        specify hashed-database library],,
		[with_hashed_db=no])
	AC_MSG_RESULT($with_hashed_db)
else
	with_hashed_db=no
fi
AC_SUBST(NCURSES_USE_DATABASE)

AC_MSG_CHECKING(for list of fallback terminal descriptions)
AC_ARG_WITH(fallbacks,
	[  --with-fallbacks=XXX    specify list of fallback terminal descriptions],
	[with_fallback=$withval],
	[with_fallback=])
AC_MSG_RESULT([${with_fallback:-(none)}])

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

# The fallback feature in ncurses relies upon tic/infocmp outside the build
# tree for generating the terminal descriptions that will be compiled into the
# library.  If your toolchain is old, it may not handle current terminal
# databases.  Use configure-options to point to the tools which will be used,
# rather than the first ones found on the $PATH.
AC_CHECK_TOOL(TIC, tic)
AC_CHECK_TOOL(INFOCMP, infocmp)
if test -n "$FALLBACK_LIST"
then
	CF_WITH_PATH_PROG(TIC,     tic,     [for fallbacks], $PATH:/usr/local/ncurses/bin)
	CF_WITH_PATH_PROG(INFOCMP, infocmp, [for fallbacks], $PATH:/usr/local/ncurses/bin)
	test -z "$TIC" && FALLBACK_LIST=
	test -z "$INFOCMP" && FALLBACK_LIST=
	if test -z "$FALLBACK_LIST"
	then
		AC_MSG_WARN(ignoring fallback option because tic/infocmp are not available)
	fi
fi
AC_SUBST(TIC)
AC_SUBST(INFOCMP)

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,
	[  --without-xterm-new     specify if xterm terminfo should be old version],
	[with_xterm_new=$withval],
	[with_xterm_new=yes])
case "$with_xterm_new" in
(no) with_xterm_new=xterm-old;;
(*)	 with_xterm_new=xterm-new;;
esac
AC_MSG_RESULT($with_xterm_new)
WHICH_XTERM=$with_xterm_new
AC_SUBST(WHICH_XTERM)

CF_WITH_XTERM_KBS

MAKE_TERMINFO=
if test "$use_database" = no ; then
	TERMINFO="${datadir}/terminfo"
	MAKE_TERMINFO="#"
else

AC_MSG_CHECKING(for list of terminfo directories)
CF_WITH_PATHLIST(terminfo-dirs,
	[  --with-terminfo-dirs=XXX specify list of terminfo directories],
	TERMINFO_DIRS,
	DATADIR/terminfo,
	${datadir}/terminfo)
AC_MSG_RESULT($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,
	[  --with-default-terminfo-dir=DIR default terminfo directory],
	TERMINFO,
	DATADIR/terminfo,
	${datadir}/terminfo)
AC_MSG_RESULT($TERMINFO)
AC_DEFINE_UNQUOTED(TERMINFO,"$TERMINFO",[Define to set the default terminal database path])

fi

AC_SUBST(TERMINFO)
AC_SUBST(MAKE_TERMINFO)

###	use option --disable-big-core to make tic run on small machines
###	We need 4Mb, check if we can allocate 50% more than that.
AC_MSG_CHECKING(if big-core option selected)
AC_ARG_ENABLE(big-core,
	[  --disable-big-core      assume machine has little memory],
	[with_big_core=$enableval],
	[AC_TRY_RUN([
#include <stdlib.h>
#include <string.h>
int main(void) {
	unsigned long n = 6000000L;
	char *s = malloc(n);
	if (s != 0)
		s[0] = s[n-1] = 0;
	${cf_cv_main_return:-return}(s == 0);
}],
	[with_big_core=yes],
	[with_big_core=no],
	[with_big_core=no])])
AC_MSG_RESULT($with_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
### program is a limit on most vendor UNIX systems.  Check that we can build.
AC_MSG_CHECKING(if big-strings option selected)
AC_ARG_ENABLE(big-strings,
	[  --disable-big-strings   assume compiler has only standard-size strings],
	[with_big_strings=$enableval],
	[CF_AWK_BIG_PRINTF(12000,with_big_strings)])
AC_MSG_RESULT($with_big_strings)

USE_BIG_STRINGS=0
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
AC_MSG_CHECKING(if you want termcap-fallback support)
AC_ARG_ENABLE(termcap,
	[  --enable-termcap        compile in termcap fallback support],
	[with_termcap=$enableval],
	[with_termcap=no])
AC_MSG_RESULT($with_termcap)

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,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

	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)
AC_ARG_ENABLE(home-terminfo,
	[  --disable-home-terminfo drop ~/.terminfo from terminfo search-path],
	[with_home_terminfo=$enableval],
	[with_home_terminfo=yes])
AC_MSG_RESULT($with_home_terminfo)
test "x$with_home_terminfo" = "xyes" && AC_DEFINE(USE_HOME_TERMINFO,1,[Define to 1 if $HOME/.terminfo feature is wanted])

CF_CHECK_MULTIUSER

if test "$cf_cv_multiuser" = yes; then

AC_MSG_CHECKING(if you want to permit root to use ncurses environment variables)
AC_ARG_ENABLE(root-environ,
	[  --disable-root-environ  restrict root use of ncurses environment variables],
	[with_root_environ=$enableval],
	[with_root_environ=yes])
AC_MSG_RESULT($with_root_environ)
test "x$with_root_environ" = xyes && AC_DEFINE(USE_ROOT_ENVIRON,1,[Define to 1 if root/setuid application is allowed to use ncurses environment])

AC_MSG_CHECKING(if you want to permit setuid programs to access all files)
AC_ARG_ENABLE(root-access,
	[  --disable-root-access   restrict file-access when running setuid],
	[with_root_access=$enableval],
	[with_root_access=yes])
AC_MSG_RESULT($with_root_access)
test "x$with_root_access" = xyes && AC_DEFINE(USE_ROOT_ACCESS,1,[Define to 1 if setuid is allowed all file-access])

AC_MSG_CHECKING(if you want to permit setuid use of ncurses environment variables)
AC_ARG_ENABLE(setuid-environ,
	[  --disable-setuid-environ restrict setuid use of ncurses environment variables],
	[with_setuid_environ=$enableval],
	[with_setuid_environ=$with_root_environ])
AC_MSG_RESULT($with_setuid_environ)
test "x$with_setuid_environ" = xyes && AC_DEFINE(USE_SETUID_ENVIRON,1,[Define to 1 if setuid/setgid application is allowed to use ncurses environment])

else
	if test -n "$enable_root_environ$enable_root_access$enable_setuid_environ"
	then
		AC_MSG_WARN(ignoring options used only for multiuser systems)
	fi

fi # cf_cv_multiuser

###   Use option --enable-symlinks to make tic use symlinks, not hard links
###   to reduce storage requirements for the terminfo database.
CF_LINK_FUNCS

with_links=no
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 "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)
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 "$with_symlinks" = no ; then
	AC_MSG_CHECKING(if tic should use hard links)
	if test "x$ac_cv_func_link" = xyes ; then
		with_links=yes
	else
		with_links=no
	fi
	AC_MSG_RESULT($with_links)
fi

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
CF_ENABLE_BROKEN_LINKER

###   use option --enable-bsdpad to have tputs process BSD-style prefix padding
AC_MSG_CHECKING(if tputs should process BSD-style prefix padding)
AC_ARG_ENABLE(bsdpad,
	[  --enable-bsdpad         recognize BSD-style prefix padding],
	[with_bsdpad=$enableval],
	[with_bsdpad=no])
AC_MSG_RESULT($with_bsdpad)
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
NCURSES_LIBUTF8=0

NEED_WCHAR_H=0
NCURSES_MBSTATE_T=0
NCURSES_WCHAR_T=0
NCURSES_WINT_T=0

# Check to define _XOPEN_SOURCE "automatically"
CPPFLAGS_before_XOPEN="$CPPFLAGS"
CF_XOPEN_SOURCE(600)
CPPFLAGS_after_XOPEN="$CPPFLAGS"

# Work around breakage on OS X
CF_SIGWINCH

# Checks for CODESET support.
AM_LANGINFO_CODESET

# use these variables to work around a defect in gcc's fixincludes.
NCURSES_OK_WCHAR_T=
NCURSES_OK_WINT_T=

AC_MSG_CHECKING(if you want wide-character code)
AC_ARG_ENABLE(widec,
	[  --disable-widec         compile without wide character and UTF-8 support],
	[with_widec=$enableval],
	[with_widec=$cf_dft_widec])
AC_MSG_RESULT($with_widec)

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${LIB_SUFFIX}"
	fi
	AC_DEFINE(USE_WIDEC_SUPPORT,1,[Define to 1 to compile with wide character and UTF-8 support])
	AC_DEFINE(NCURSES_WIDECHAR,1,[Define to 1 to compile with wide character and UTF-8 support])
	case "$CPPFLAGS" in
	(*_XOPEN_SOURCE=*)
		;;
	(*)
		AC_MSG_WARN(_XOPEN_SOURCE feature test macro appears to be predefined)
		# CPPFLAGS="$CPPFLAGS -DNCURSES_WIDECHAR"
		CPPFLAGS_after_XOPEN="$CPPFLAGS_after_XOPEN -DNCURSES_WIDECHAR"
		;;
	esac

	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 wmemchr mbtowc wctomb mblen mbrlen mbrtowc wcsrtombs mbsrtowcs wcstombs mbstowcs)
	if test "x$ac_cv_func_putwc" != xyes ; then
		CF_UTF8_LIB
		if test "$cf_cv_utf8_lib" != no ; then
			NCURSES_LIBUTF8=1
		fi
	fi
	CF_WCHAR_TYPE(mbstate_t, NCURSES_MBSTATE_T)
	CF_WCHAR_TYPE(wchar_t,   NCURSES_WCHAR_T,   NCURSES_OK_WCHAR_T)
	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,1,[Define to 1 if we must declare mbstate_t])
	fi
fi
AC_SUBST(NCURSES_CH_T)
AC_SUBST(NCURSES_LIBUTF8)

AC_SUBST(NEED_WCHAR_H)
AC_SUBST(NCURSES_MBSTATE_T)
AC_SUBST(NCURSES_WCHAR_T)
AC_SUBST(NCURSES_WINT_T)

AC_SUBST(NCURSES_OK_WCHAR_T)
AC_SUBST(NCURSES_OK_WINT_T)

###   use option --disable-lp64 to allow long chtype
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=$enableval],
	[with_lp64=$cf_dft_with_lp64])
AC_MSG_RESULT($with_lp64)

if test "x$with_lp64" = xyes ; then
	cf_cv_enable_lp64=1
else
	cf_cv_enable_lp64=0
fi
AC_SUBST(cf_cv_enable_lp64)

CF_LARGEFILE

###   use option --disable-tparm-varargs to make tparm() conform to X/Open
AC_MSG_CHECKING(if you want tparm not to use X/Open fixed-parameter list)
AC_ARG_ENABLE(tparm-varargs,
	[  --disable-tparm-varargs compile tparm() without varargs interface],
	[with_tparm_varargs=$enableval],
	[with_tparm_varargs=yes])
AC_MSG_RESULT($with_tparm_varargs)
NCURSES_TPARM_VARARGS=0
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
if test "$with_ticlib" != no ; then
AC_MSG_CHECKING(if you want tic library to use explicit dependency on ncurses$LIB_SUFFIX library)
AC_ARG_ENABLE(tic-depends,
	[  --disable-tic-depends   link tic library without explicit dependency on ncurses library],
	[with_tic_depends=$enableval],
	[with_tic_depends=yes])
AC_MSG_RESULT($with_tic_depends)
else
	with_tic_depends=no
fi

###   use option --enable-wattr-macros to enable wattr* macros in curses.h
AC_MSG_CHECKING(if you want to enable wattr* macros)
AC_ARG_ENABLE(wattr-macros,
	[  --enable-wattr-macros   enable wattr* macros],
	[with_wattr_macros=$enableval],
	[with_wattr_macros=no])
if [[ "x$with_wattr_macros" != xyes ]]; then
	NCURSES_WATTR_MACROS=0
	AC_MSG_RESULT(no)
else
	NCURSES_WATTR_MACROS=1
	AC_MSG_RESULT(yes)
fi
AC_SUBST(NCURSES_WATTR_MACROS)

CF_WITH_X11_RGB

###   use option --with-bool to override bool's type
CF_WITH_TYPE(bool,
	[  --with-bool=TYPE        fall back to TYPE for curses 'bool' typedef],
	NCURSES_BOOL,
	auto)

AC_MSG_CHECKING(for alternate terminal capabilities file)
AC_ARG_WITH(caps,
	[  --with-caps=alt         compile with alternate Caps file],
	[TERMINFO_CAPS=Caps.$withval],
	[TERMINFO_CAPS=Caps])
if test ! -f "${srcdir}/include/${TERMINFO_CAPS}"
then
	AC_MSG_WARN(file not found: "${srcdir}/include/${TERMINFO_CAPS}")
	TERMINFO_CAPS=Caps
fi
AC_MSG_RESULT($TERMINFO_CAPS)
AC_SUBST(TERMINFO_CAPS)

###   use option --with-chtype to override chtype's type
CF_WITH_TYPE(chtype,
	[  --with-chtype=TYPE      override type of chtype],
	NCURSES_CHTYPE,
	$cf_dft_chtype)

###   use option --with-ospeed to override ospeed's type
CF_WITH_TYPE(ospeed,
	[  --with-ospeed=TYPE      override type of ospeed variable],
	NCURSES_OSPEED,
	short)

###   use option --with-mmask-t to override mmask_t's type
CF_WITH_TYPE(mmask-t,
	[  --with-mmask-t=TYPE     override type of mmask_t],
	NCURSES_MMASK_T,
	$cf_dft_mmask_t)

###   option --enable-lp64 can give unexpected results
if test "$cf_cv_enable_lp64" = 1 ; then
	test -n "$with_chtype"  && test "$NCURSES_CHTYPE"  != unsigned && AC_MSG_WARN(option --enable-lp64 overrides --with-chtype)
	test -n "$with_mmask_t" && test "$NCURSES_MMASK_T" != unsigned && AC_MSG_WARN(option --enable-lp64 overrides --with-mmask-t)
fi

###   use option --with-ccharw-max to override CCHARW_MAX size
AC_MSG_CHECKING(for size CCHARW_MAX)
AC_ARG_WITH(ccharw-max,
	[  --with-ccharw-max=XXX   override size CCHARW_MAX],
	[NCURSES_CCHARW_MAX="$withval"],
	[NCURSES_CCHARW_MAX=$cf_dft_ccharw_max])
AC_MSG_RESULT($NCURSES_CCHARW_MAX)
AC_SUBST(NCURSES_CCHARW_MAX)

AC_CHECK_SIZEOF([signed char])
if test "$ac_cv_sizeof_signed_char" = 1 ; then
	NCURSES_SBOOL="signed char"
else
	NCURSES_SBOOL="char"
fi
AC_MSG_CHECKING(whether to use signed chars for Boolean array in term.h)
AC_ARG_ENABLE(signed-char,
	[  --enable-signed-char    use signed chars for Boolean array in term.h],
	[with_signed_char=$enableval],
	[with_signed_char=$cf_dft_signed_char])
AC_MSG_RESULT($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
CF_WITH_TYPE(tparm-arg,
	[  --with-tparm-arg=TYPE   override parameter type of tparm],
	NCURSES_TPARM_ARG,
	$cf_dft_tparm_arg)

### Enable compiling-in rcs id's
AC_MSG_CHECKING(if RCS identifiers should be compiled-in)
AC_ARG_WITH(rcs-ids,
	[  --with-rcs-ids          compile-in RCS identifiers],
	[with_rcs_ids=$withval],
	[with_rcs_ids=no])
AC_MSG_RESULT($with_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 reset tabs tic toe tput tset ])

###############################################################################
CF_HELP_MESSAGE(Extensions:)

### Note that some functions (such as const) are normally disabled anyway.
AC_MSG_CHECKING(if you want to build with function extensions)
AC_ARG_ENABLE(ext-funcs,
	[  --disable-ext-funcs     disable function-extensions],
	[with_ext_funcs=$enableval],
	[with_ext_funcs=yes])
AC_MSG_RESULT($with_ext_funcs)
if test "x$with_ext_funcs" = xyes ; then
	NCURSES_EXT_FUNCS=1
	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_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
else
	cf_dft_ext_spfuncs=no
	cf_dft_ext_colors=no
	NCURSES_EXT_FUNCS=0
	GENERATED_EXT_FUNCS=
fi
AC_SUBST(NCURSES_EXT_FUNCS)
AC_SUBST(GENERATED_EXT_FUNCS)

AC_MSG_CHECKING(if you want to build with SCREEN extensions)
AC_ARG_ENABLE(sp-funcs,
	[  --enable-sp-funcs       enable SCREEN-extensions],
	[with_sp_funcs=$enableval],
	[with_sp_funcs=$cf_dft_ext_spfuncs])
AC_MSG_RESULT($with_sp_funcs)
if test "x$with_sp_funcs" = xyes ; then
	NCURSES_SP_FUNCS=1
	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
	GENERATED_SP_FUNCS=
fi
AC_SUBST(NCURSES_SP_FUNCS)
AC_SUBST(GENERATED_SP_FUNCS)

AC_MSG_CHECKING(if you want to build with terminal-driver)
AC_ARG_ENABLE(term-driver,
	[  --enable-term-driver    enable terminal-driver],
	[with_term_driver=$enableval],
	[with_term_driver=no])
AC_MSG_RESULT($with_term_driver)
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

###   use option --enable-const to turn on use of const beyond that in XSI.
AC_MSG_CHECKING(for extended use of const keyword)
AC_ARG_ENABLE(const,
	[  --enable-const          compile with extra/non-standard const],
	[with_ext_const=$enableval],
	[with_ext_const=$cf_dft_ext_const])
AC_MSG_RESULT($with_ext_const)
NCURSES_CONST='/*nothing*/'
if test "x$with_ext_const" = xyes ; then
	NCURSES_CONST=const
fi
AC_SUBST(NCURSES_CONST)

###   use option --enable-ext-colors to turn on use of colors beyond 16.
NCURSES_EXT_COLORS=0
NCURSES_RGB_COLORS=0
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=$enableval],
	[with_ext_colors=$cf_dft_ext_colors])
AC_MSG_RESULT($with_ext_colors)
if test "x$with_ext_colors" = xyes ; then
	if test "x$with_widec" != xyes ; then
		AC_MSG_WARN(This option applies only to wide-character library)
	else
		# cannot be ABI 5 since it changes sizeof(cchar_t)
		CF_NCURSES_ABI_6
		NCURSES_EXT_COLORS=1
		AC_DEFINE(NCURSES_EXT_COLORS,1,[Define to 1 to compile for 256-color support])
		AC_DEFINE(HAVE_ALLOC_PAIR,1,[Define to 1 to enable alloc_pair() function])
		AC_DEFINE(HAVE_INIT_EXTENDED_COLOR,1,[Define to 1 to enable init_extended_color() function in test-programs])
		AC_DEFINE(HAVE_RESET_COLOR_PAIRS,1,[Define to 1 to enable reset_color_pairs() function in test-programs])
	fi
	###   use option --enable-rgb-color to extend support for direct-color
	AC_MSG_CHECKING(if you want to extend support for direct color)
	AC_ARG_ENABLE(rgb-color,
		[  --enable-rgb-color      compile for extended direct-color],
		[with_rgb_color=$enableval],
		[with_rgb_color=$cf_dft_rgb_color])
	AC_MSG_RESULT($with_rgb_color)
	if test "x$with_rgb_color" = xyes ; then
		NCURSES_RGB_COLORS=1
		AC_DEFINE(NCURSES_RGB_COLORS,1,[Define to 1 to compile for extended direct-color support])
	fi
fi
AC_SUBST(NCURSES_EXT_COLORS)
AC_SUBST(NCURSES_RGB_COLORS)

###   use option --enable-ext-mouse to modify coding to support 5-button mice
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=$enableval],
	[with_ext_mouse=$cf_dft_ext_mouse])
AC_MSG_RESULT($with_ext_mouse)
if test "x$with_ext_mouse" = xyes ; then
	CF_NCURSES_ABI_6
fi

if test $cf_cv_abi_default -le 5 ; then
	NCURSES_MOUSE_VERSION=1
elif test $cf_cv_abi_default -le 6 ; then
	NCURSES_MOUSE_VERSION=2
else
	NCURSES_MOUSE_VERSION=3
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 "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)
AC_ARG_ENABLE(sigwinch,
	[  --enable-sigwinch       compile with SIGWINCH handler],
	[with_sigwinch=$enableval],
	[with_sigwinch=$with_ext_funcs])
AC_MSG_RESULT($with_sigwinch)
if test "x$with_sigwinch" = xyes
then
	AC_DEFINE(USE_SIGWINCH,1,[Define to 1 to compile with SIGWINCH handler])
	cf_cv_enable_sigwinch=1
else
	cf_cv_enable_sigwinch=0
fi
AC_SUBST(cf_cv_enable_sigwinch)

###   use option --enable-tcap-names to allow user to define new capabilities
AC_MSG_CHECKING(if you want user-definable terminal capabilities like termcap)
AC_ARG_ENABLE(tcap-names,
	[  --enable-tcap-names     compile with user-definable terminal capabilities],
	[with_tcap_names=$enableval],
	[with_tcap_names=$with_ext_funcs])
AC_MSG_RESULT($with_tcap_names)
NCURSES_XNAMES=0
if test "x$with_tcap_names" = xyes; then
	NCURSES_XNAMES=1
	AC_DEFINE(NCURSES_XNAMES,1,[Define to 1 to compile with user-definable terminal capabilities])
fi
AC_SUBST(NCURSES_XNAMES)

##############################################################################
CF_HELP_MESSAGE(Reentrant Code:)
CF_WITH_PTHREAD

if test "x$with_pthread" != xno; then
	AC_CHECK_FUNC(pthread_kill,[
		AC_MSG_CHECKING(if you want to allow EINTR in wgetch with pthreads)
		AC_ARG_ENABLE(pthreads-eintr,
			[  --enable-pthreads-eintr enable EINTR in wgetch with pthreads],
			[use_pthreads_eintr=$enableval],
			[use_pthreads_eintr=no])
		AC_MSG_RESULT($use_pthreads_eintr)
		if test "x$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)
	AC_ARG_ENABLE(weak-symbols,
		[  --enable-weak-symbols   enable weak-symbols for pthreads],
		[use_weak_symbols=$enableval],
		[use_weak_symbols=no])
	AC_MSG_RESULT($use_weak_symbols)
	if test "x$use_weak_symbols" = xyes ; then
		CF_WEAK_SYMBOLS
	else
		cf_cv_weak_symbols=no
	fi

	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 "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)

# Reentrant code has to be opaque; there's little advantage to making ncurses
# 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 reentrant code)
AC_ARG_ENABLE(reentrant,
	[  --enable-reentrant      compile with reentrant code],
	[with_reentrant=$enableval],
	[with_reentrant=no])
AC_MSG_RESULT($with_reentrant)
if test "x$with_reentrant" = xyes ; then
	cf_cv_enable_reentrant=1
	cf_cv_enable_opaque="NCURSES_INTERNALS"
	NCURSES_SIZE_T=int
	if test "x$cf_cv_weak_symbols" = xyes ; then
		CF_REMOVE_LIB(LIBS,$LIBS,pthread)
		CF_ADD_LIB(pthread,TEST_LIBS)
		CF_ADD_LIB(pthread,TEST_LIBS2)
		CF_ADD_LIB(pthread,PRIVATE_LIBS)
	else
		# when not using weak symbols but with_reentrant,
		# add 't' to the library suffix on all platforms
		# except cygwin, where we only do that if ALSO
		# compiling with full thread support.
		case "$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${LIB_SUFFIX}"
			fi
			;;
		esac
	fi
	AC_DEFINE(USE_REENTRANT,1,[Define to 1 to use reentrant feature])
	CF_NCURSES_ABI_6
else
	cf_cv_enable_reentrant=0
	cf_cv_enable_opaque="NCURSES_OPAQUE"
	NCURSES_SIZE_T=$cf_dft_ordinate_type
fi
AC_SUBST(cf_cv_enable_reentrant)
AC_SUBST(cf_cv_enable_opaque)

AC_SUBST(NCURSES_SIZE_T)

AC_MSG_CHECKING(whether curses library structures should be opaque)
CF_ARG_DISABLE(opaque-curses,
	[  --disable-opaque-curses do not make WINDOW, etc., structures opaque],
	[enable_opaque_curses=no],[
	 test "$cf_cv_enable_reentrant" = 1 && enable_opaque_curses=yes
	 test "$cf_cv_enable_reentrant" = 1 || enable_opaque_curses=$cf_dft_opaque_curses
	])
AC_MSG_RESULT($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(whether form library structures should be opaque)
CF_ARG_DISABLE(opaque-form,
	[  --disable-opaque-form   do not make form library structures opaque],
	[enable_opaque_form=no],[enable_opaque_form=$cf_dft_opaque_curses])
AC_MSG_RESULT($enable_opaque_form)

AC_MSG_CHECKING(whether menu library structures should be opaque)
CF_ARG_DISABLE(opaque-menu,
	[  --disable-opaque-menu   do not make menu library structures opaque],
	[enable_opaque_menu=no],[enable_opaque_menu=$cf_dft_opaque_curses])
AC_MSG_RESULT($enable_opaque_menu)

AC_MSG_CHECKING(whether panel library structures should be opaque)
CF_ARG_DISABLE(opaque-panel,
	[  --disable-opaque-panel  do not make panel library structures opaque],
	[enable_opaque_panel=no],[enable_opaque_panel=$cf_dft_opaque_curses])
AC_MSG_RESULT($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)
	AC_ARG_WITH(wrap-prefix,
		[  --with-wrap-prefix=XXX  override prefix used for public variables],
		[NCURSES_WRAP_PREFIX=$withval],
		[NCURSES_WRAP_PREFIX=_nc_])
	AC_MSG_RESULT($NCURSES_WRAP_PREFIX)
else
	NCURSES_WRAP_PREFIX=_nc_
fi
AC_SUBST(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-check-size to detect screensize with CPR
AC_MSG_CHECKING(if you want to check screensize of serial terminals)
AC_ARG_ENABLE(check-size,
	[  --enable-check-size     compile-in code to detect screensize of serial terminals],,
	[enable_check_size=$with_develop])
AC_MSG_RESULT($enable_check_size)
test "x$enable_check_size" = xyes && AC_DEFINE(USE_CHECK_SIZE,1,[Define to 1 to compile-in code to detect screensize])

###   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-fvisibility to turn on use of gcc-specific feature
AC_MSG_CHECKING(if you want to use gcc -fvisibility option)
AC_ARG_ENABLE(fvisibility,
	[  --enable-fvisibility    compile with -fvisibility=hidden],
	[cf_with_fvisibility=$enableval],
	[cf_with_fvisibility=no])
AC_MSG_RESULT($cf_with_fvisibility)

NCURSES_IMPEXP=
NCURSES_CXX_IMPEXP=
if test "x$cf_with_fvisibility" = xyes; then
	CF_CHECK_FVISIBILITY($CC,CFLAGS,cf_cv_fvisibility_hidden)
	if test "x$cf_cv_fvisibility_hidden" = xyes
	then
		CF_ADD_CFLAGS([-fvisibility=hidden])
		NCURSES_IMPEXP="__attribute__ ((visibility(\"default\")))"
	fi
	if test -n "$CXX"
	then
		AC_LANG_PUSH(C++)
		CF_CHECK_FVISIBILITY($CXX,CXXFLAGS,cf_cv_fvisibility_hidden2)
		if test "x$cf_cv_fvisibility_hidden2" = xyes
		then
			CF_ADD_CXXFLAGS([-fvisibility=hidden])
			NCURSES_CXX_IMPEXP="__attribute__ ((visibility(\"default\")))"
		fi
		AC_LANG_POP
	fi
fi
AC_SUBST(NCURSES_IMPEXP)
AC_SUBST(NCURSES_CXX_IMPEXP)

###   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,
	[  --enable-safe-sprintf   compile with experimental safe-sprintf code],
	[with_safe_sprintf=$enableval],
	[with_safe_sprintf=no])
AC_MSG_RESULT($with_safe_sprintf)

###   use option --disable-scroll-hints to turn off use of scroll-hints scrolling logic
# when hashmap is used scroll hints are useless
if test "$with_hashmap" = no ; then
AC_MSG_CHECKING(if you want to experiment without scrolling-hints code)
AC_ARG_ENABLE(scroll-hints,
	[  --disable-scroll-hints  compile without scroll-hints code],
	[with_scroll_hints=$enableval],
	[with_scroll_hints=yes])
AC_MSG_RESULT($with_scroll_hints)
test "x$with_scroll_hints" = xyes && AC_DEFINE(USE_SCROLL_HINTS,1,[Define to 1 to compile without scroll-hints code])
fi

case x$cf_cv_abi_default in
(x[[789]])
	NCURSES_WGETCH_EVENTS=0
	;;
(*)
AC_MSG_CHECKING(if you want wgetch-events code)
AC_ARG_ENABLE(wgetch-events,
	[  --enable-wgetch-events  compile with wgetch-events code],
	[with_wgetch_events=$enableval],
	[with_wgetch_events=no])
AC_MSG_RESULT($with_wgetch_events)
if test "x$with_wgetch_events" = xyes ; then
	AC_DEFINE(NCURSES_WGETCH_EVENTS,1,[Define to 1 to compile with wgetch-events code])
	NCURSES_WGETCH_EVENTS=1
else
	NCURSES_WGETCH_EVENTS=0
fi
esac
AC_SUBST(NCURSES_WGETCH_EVENTS)

USE_NAMED_PIPES=0
EXP_WIN32_DRIVER=0
INTERNALS_HDR=

case "$cf_cv_system_name" in
(*mingw32*|*mingw64*|*-msvc*)
	CF_CHECK_NAMED_PIPES
	if test "$cf_cv_named_pipes" = yes; then
		AC_MSG_CHECKING(if you want experimental-Windows driver)
		AC_ARG_ENABLE(exp-win32,
			[  --enable-exp-win32      compile with experimental-Windows driver],
			[with_exp_win32=$enableval],
			[with_exp_win32=no])
		AC_MSG_RESULT($with_exp_win32)
	else
		with_exp_win32=no
	fi
	if test "x$with_exp_win32" = xyes
	then
		AC_DEFINE(USE_NAMED_PIPES,1,[Define to 1 to use named pipes with win32 driver])
		AC_DEFINE(EXP_WIN32_DRIVER,1,[Define to 1 to compile with experimental win32 driver])
		USE_NAMED_PIPES=1
		EXP_WIN32_DRIVER=1
	fi
	INTERNALS_HDR='../include/nc_win32.h'
	;;
esac

AC_SUBST(USE_NAMED_PIPES)
AC_SUBST(EXP_WIN32_DRIVER)
AC_SUBST(INTERNALS_HDR)

###############################################################################
CF_HELP_MESSAGE(Testing/development Options:)

###	use option --disable-echo to suppress full display compiling commands
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_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
CF_ENABLE_WARNINGS(Wno-unknown-pragmas Wswitch-enum,yes)

if test "x$enable_warnings" = "xyes"; then
 	CF_ADD_ADAFLAGS(-gnatwa -gnatyg)
	if test "x$cf_with_cxx" = xyes ; then
		CF_GXX_WARNINGS(Wno-unused)
	fi
fi
CF_ENABLE_STRING_HACKS

###	use option --enable-assertions to turn on generation of assertion code
AC_MSG_CHECKING(if you want to enable runtime assertions)
AC_ARG_ENABLE(assertions,
	[  --enable-assertions     test: turn on generation of assertion code],
	[with_assertions=$enableval],
	[with_assertions=no])
AC_MSG_RESULT($with_assertions)
if test -n "$GCC"
then
	if test "$with_assertions" = no
	then
		CPPFLAGS="$CPPFLAGS -DNDEBUG"
	else
		CF_ADD_ADAFLAGS(-gnata)
	fi
fi

###	use option --disable-leaks to suppress "permanent" leaks, for testing
CF_DISABLE_LEAKS
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 "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,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*)
	cf_all_traces=yes
	;;
esac

AC_MSG_CHECKING(whether to add trace feature to all models)
AC_ARG_WITH(trace,
[  --with-trace            test: add trace() function to all models of ncurses],
[cf_with_trace=$withval],
[cf_with_trace=$cf_all_traces])
AC_MSG_RESULT($cf_with_trace)

if test "x$cf_with_trace" = xyes ; then
	LIB_TRACING=all
	ADA_TRACE=TRUE
	AC_DEFINE(TRACE,1,[Define to 1 if we have support trace functions])
	AC_DEFINE(HAVE__TRACEF,1,[Define to 1 if we have _tracef function])
else
	LIB_TRACING=DEBUG
	ADA_TRACE=FALSE
fi

AC_SUBST(ADA_TRACE)

CF_DISABLE_GNAT_PROJECTS

###	Checks for libraries.
case "$cf_cv_system_name" in
(*mingw32*|*mingw64*)
	# Note: WINVER may be a problem with Windows 10
	if test "x$with_exp_win32" = xyes ; then
		CPPFLAGS="$CPPFLAGS -DWINVER=0x0600 -DWIN32_LEAN_AND_MEAN"
	else
		CPPFLAGS="$CPPFLAGS -DWINVER=0x0501 -DWIN32_LEAN_AND_MEAN"
	fi
	CF_CHECK_LIBSSP
	;;
(*)
	;;
esac

CF_MATH_LIB(MATH_LIB,pow(sin(x),x))
AC_SUBST(MATH_LIB)

###	Checks for header files.
AC_HEADER_TIME
CF_REGEX

dnl These are some other potentially nonportable headers.
AC_CHECK_HEADERS( \
alloca.h \
fcntl.h \
getopt.h \
limits.h \
locale.h \
malloc.h \
math.h \
poll.h \
sys/auxv.h \
sys/ioctl.h \
sys/param.h \
sys/poll.h \
sys/select.h \
sys/time.h \
sys/times.h \
unistd.h \
wctype.h \
)

CF_GETOPT_HEADER

CF_CHECK_ENVIRON(environ)
CF_CHECK_GETENV
if test "x$cf_cv_consistent_getenv" = xno && \
	test "x$cf_with_trace" = xyes
then
	AC_MSG_WARN(The NCURSES_TRACE environment variable is not supported with this configuration)
fi

CF_SYS_TIME_SELECT

###	checks for compiler characteristics
AC_LANG_C
AC_C_CONST
CF_C_INLINE(NCURSES_INLINE,1200)
CF_SIG_ATOMIC_T

if test "$NCURSES_CHTYPE" = auto ; then
	CF_TYPEOF_CHTYPE
else
	cf_cv_typeof_chtype=$NCURSES_CHTYPE
fi
test "$cf_cv_typeof_chtype" = unsigned && cf_cv_typeof_chtype=""
AC_SUBST(cf_cv_typeof_chtype)

CF_UNSIGNED_LITERALS
cf_cv_1UL="1"
test ".$cf_cv_unsigned_literals" = .yes && cf_cv_1UL="${cf_cv_1UL}U"
test ".$cf_cv_typeof_chtype"    = .long && cf_cv_1UL="${cf_cv_1UL}L"
AC_SUBST(cf_cv_1UL)

if test "$NCURSES_MMASK_T" = auto ; then
	cf_cv_typeof_mmask_t=long
else
	cf_cv_typeof_mmask_t=$NCURSES_MMASK_T
fi
test "$cf_cv_typeof_mmask_t" = unsigned && cf_cv_typeof_mmask_t=""
AC_SUBST(cf_cv_typeof_mmask_t)

###	Checks for external-data
CF_ERRNO
CF_LINK_DATAONLY

###	Checks for library functions.
CF_FUNC_GETTIME
AC_CHECK_FUNCS( \
fpathconf \
getcwd \
getauxval \
getegid \
geteuid \
getopt \
getuid \
issetugid \
localeconv \
poll \
remove \
select \
setbuf \
setbuffer \
setfsuid \
setvbuf \
sigaction \
sigvec \
snprintf \
strdup \
strstr \
sysconf \
tcgetpgrp \
times \
tsearch \
vsnprintf \
)

CF_FUNC_GETTTYNAM

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

CF_ISASCII
CF_STRUCT_SIGACTION
CF_FUNC_NANOSLEEP
CF_FUNC_TERMIOS
CF_FUNC_VSSCANF
CF_MKSTEMP

# setup for prototype of fallback for vsscanf()
CF_SUBST_IF(["$cf_cv_func_vsscanf" = vsscanf], HAVE_VSSCANF, 1, 0)

dnl FIXME (may need this) AC_SYS_RESTARTABLE_SYSCALLS
if test "x$cross_compiling" = xyes ; then
	AC_MSG_WARN(cross compiling: assume setvbuf params not reversed)
else
	AC_FUNC_SETVBUF_REVERSED
fi
AC_CHECK_TYPE(intptr_t, long)
AC_CHECK_TYPE(ssize_t, int)
CF_TYPE_SIGACTION
CF_SIZECHANGE
CF_FUNC_MEMMOVE
CF_FUNC_POLL
CF_MB_LEN_MAX
CF_VA_COPY
AC_FUNC_VFORK
CF_FOPEN_BIN_R
CF_CHECK_TYPE2(cc_t,termios.h)
CF_CHECK_TYPE2(speed_t,termios.h)
CF_CHECK_TYPE2(tcflag_t,termios.h)
CF_CHECK_TYPE2(sigset_t,signal.h)

# 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>,[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 "$with_hashed_db" != no ; then
	AC_DEFINE(USE_HASHED_DB,1,[Define to 1 if we should build terminfo in hashed database])
	CF_HASHED_DB($with_hashed_db)
fi

dnl We'll do our own -g libraries, unless the user's overridden via $CFLAGS
if test -z "$cf_user_CFLAGS" && test "$enable_leaks" = yes ; then
	CF_STRIP_G_OPT(CFLAGS)
	CF_STRIP_G_OPT(CXXFLAGS)
fi

# Just in case, check if the C compiler has a bool type.
CF_BOOL_DECL(cf_cv_cc_bool_type)
if test "$cf_cv_cc_bool_type" = yes; then
	USE_BUILTIN_BOOL=1
else
	USE_BUILTIN_BOOL=0
fi
AC_SUBST(USE_BUILTIN_BOOL)

test "$cf_cv_header_stdbool_h" = yes && AC_DEFINE(USE_STDBOOL_H,1,[Define to 1 if we can include stdbool.h])

# Check for C++ compiler characteristics (and ensure that it's there!)
if test -n "$CXX" ; then
	AC_LANG_CPLUSPLUS
	CF_STDCPP_LIBRARY
	CF_PROG_CC_C_O(CXX,[$CXXFLAGS $CPPFLAGS])

	case "$GXX_VERSION" in
	(1.*|2.[[0-6]]*|[[1-9]][[0-9]].*)
		cf_cxx_library=yes
		;;
	(*-2.7*|2.7*)
		CF_GPP_LIBRARY
		;;
	(*)
		cf_cxx_library=no
		;;
	esac

	AC_CHECK_HEADERS(new exception typeinfo)
	CF_CXX_IOSTREAM_NAMESPACE
	CF_BOOL_DECL
	CF_BOOL_SIZE
	CF_ETIP_DEFINES
	CF_CPP_OVERRIDE
	CF_CPP_PARAM_INIT
	CF_CPP_STATIC_CAST
	CF_CXX_AR_FLAGS
else
	cf_cxx_library=no
	cf_cv_builtin_bool=yes

	# Just because we are not configuring against C++ right now does not
	# mean that a user will not want to use C++.  Some distributors disable
	# the C++ portion of this configuration as a shortcut (or just to avoid
	# compiling the demo in the c++ directory).  So we need a reasonable
	# default for the 'bool' type.
	#
	# Caveat: since the storage of the bool type is not standardized, it
	# may change.

	if test "$NCURSES_BOOL" != auto ; then
		cf_cv_type_of_bool=$NCURSES_BOOL
		USE_STDBOOL_H=0
	else
		CF_BOOL_SIZE
	fi
fi
AC_SUBST(CXXLIBS)

# If the C compiler did not declare bool, and we did not determine that the C++
# compiler does not declare bool, turn on an ifdef in curses.h that makes the
# ncurses library use the same type as C++ bool.  Note that this allows one to
# specify the type of bool in a configure-script option and postpone
# integration with the C++ compiler provided that the types are compatible.
USE_CXX_BOOL=1
if test "$USE_BUILTIN_BOOL" = 1
then
	# oops: C has a bool.  Unlikely, but C++ could differ.
	USE_CXX_BOOL=0
elif test "$cf_cv_builtin_bool" = no
then
	# C++ has no bool
	USE_CXX_BOOL=0
else
	# this is the normal case
	USE_CXX_BOOL='defined(__cplusplus)'
fi
AC_SUBST(USE_CXX_BOOL)

CF_HELP_MESSAGE(Ada Binding Options:)

dnl If the Ada95 source-tree is present, add that to the build unless it will
dnl not work, or was not requested.
if test -f "${srcdir}/Ada95/Makefile.in" ; then

dnl libtool does not know anything about GNAT, though a change made in 1998
dnl provided for it "someday".  Disable the ada subtree if we are using
dnl libtool -TD 20070714
	if test "$cf_with_ada" != "no" ; then
		if test "$with_libtool" != "no"; then
			AC_MSG_WARN(libtool does not support Ada - disabling feature)
			cf_with_ada=no
		fi
	fi

dnl Check for availability of GNU Ada Translator (GNAT).
dnl At the moment we support no other Ada compiler.
	if test "$cf_with_ada" != "no" ; then
		if test	"x$cf_cv_prog_gnat_correct" = xyes; then
			CF_ADD_ADAFLAGS(-gnatpn)
			CF_FIXUP_ADAFLAGS

			CF_GNATPREP_OPT_T

			CF_GNAT_GENERICS
			CF_GNAT_SIGINT
			CF_GNAT_PROJECTS

			CF_WITH_ADA_COMPILER

			cf_ada_package=terminal_interface
			AC_SUBST(cf_ada_package)

			CF_WITH_ADA_INCLUDE
			CF_WITH_ADA_OBJECTS
			CF_WITH_ADA_SHAREDLIB

			# allow the Ada binding to be renamed
			CF_WITH_ADA_LIBNAME(AdaCurses)
		fi
	fi
else
	cf_with_ada=no
fi

# do this "late" to avoid conflict with header-checks
if test "x$with_widec" = xyes ; then
	AC_CHECK_SIZEOF(wchar_t)
	# cross-compiling to mingw can run into the problem that attempting to
	# link with the regex library fails, causing the test to not set this to
	# a number.  "recent" autoconf does not address this problem either -TD
	if test -z "$ac_cv_sizeof_wchar_t"
	then
		CF_VERBOSE(test failed (assume 2))
		sed /SIZEOF_WCHAR_T/d confdefs.h >confdefs.tmp
		mv confdefs.tmp confdefs.h
		echo "#define SIZEOF_WCHAR_T 2" >>confdefs.h
	fi
fi

### Construct the ncurses library-subsets, if any, from this set of keywords:
###	none, base, ext_funcs, ext_tinfo, ticlib, termlib, widechar
###
### ticlib modules may be a separate library, otherwise contained in termlib.
### termlib modules may be a separate library, otherwise contained in ncurses.
###
### The of "+" or " " between the tokens controls the way the script
### chooses to split module lists into libraries.
###
### (see CF_LIB_RULES).
AC_MSG_CHECKING(for library subsets)
LIB_SUBSETS=

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} "
	else
		LIB_SUBSETS="${LIB_SUBSETS}+"
	fi
fi

LIB_SUBSETS="${LIB_SUBSETS}termlib"
test "x$with_ext_funcs" = xyes && LIB_SUBSETS="${LIB_SUBSETS}+ext_tinfo"

if test "$with_termlib" != no ; then
	LIB_SUBSETS="${LIB_SUBSETS} "
else
	LIB_SUBSETS="${LIB_SUBSETS}+"
fi

LIB_SUBSETS="${LIB_SUBSETS}base"

# Most term-driver calls are to tinfo, but some like init_pair are to the
# base library (so it resides in base).
if test "$with_term_driver" != no ; then
	LIB_SUBSETS="${LIB_SUBSETS}+port_drivers"
	case "$cf_cv_system_name" in
	(*mingw32*|*mingw64*|*msys*|*cygwin*)
		if test "x$with_exp_win32" = xyes ; then
			LIB_SUBSETS="${LIB_SUBSETS}+port_tinfo+port_win32"
		else
			LIB_SUBSETS="${LIB_SUBSETS}+port_tinfo+port_win32con"
		fi
		CPPFLAGS="$CPPFLAGS -DUSE_WIN32CON_DRIVER"
		;;
	(*)
		LIB_SUBSETS="${LIB_SUBSETS}+port_tinfo"
		;;
	esac
elif test "x$with_exp_win32" = xyes ; then
	case "$cf_cv_system_name" in
	(*mingw32*|*mingw64*)
		LIB_SUBSETS="${LIB_SUBSETS}+port_win32"
		;;
	(*)
		;;
	esac
fi

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)

### Construct the list of include-directories to be generated
CF_INCLUDE_DIRS
CF_ADA_INCLUDE_DIRS

### Build up pieces for makefile rules
AC_MSG_CHECKING(default library suffix)
CF_LIB_TYPE($DFT_LWR_MODEL,DFT_ARG_SUFFIX)dnl
AC_SUBST(DFT_ARG_SUFFIX)dnl the string to append to "-lncurses" ("")
AC_MSG_RESULT($DFT_ARG_SUFFIX)

AC_MSG_CHECKING(default library-dependency suffix)
CF_LIB_SUFFIX($DFT_LWR_MODEL,DFT_LIB_SUFFIX,DFT_DEP_SUFFIX)dnl
AC_SUBST(DFT_DEP_SUFFIX)dnl the corresponding library-suffix (".a")
AC_MSG_RESULT($DFT_DEP_SUFFIX)

AC_MSG_CHECKING(default object directory)
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)

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=$DFT_DEP_SUFFIX
else
	# we normally make a static library because C/C++ library rules differ
	CF_LIB_SUFFIX(normal,CXX_LIB_SUFFIX,CXX_DEP_SUFFIX)
fi
AC_MSG_RESULT($CXX_LIB_SUFFIX)
AC_SUBST(CXX_LIB_SUFFIX)
fi

# do not want -ldl in build except as needed for -lncurses dependency
if test "x$with_dlsym" = xyes ; then
if test "$DFT_LWR_MODEL" = shared || \
   test "$DFT_LWR_MODEL" = libtool ; then
	CF_REMOVE_LIB(LIBS,$LIBS,dl)
fi
fi
### Set up low-level terminfo dependencies for makefiles.

# TICS_LIST and TINFO_LIST are needed to build libtic.so and libterm.so, but
# do not need libdl
TICS_LIST=
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 "x$with_ticlib" != xyes ; then
		TICS_NAME=$with_ticlib
		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="${with_ticlib}"
	else
		TICS_SUFFIX=${DFT_LIB_SUFFIX}
		TICS_ARG_SUFFIX="${TICS_NAME}${USE_ARG_SUFFIX}"
		TICS_DEP_SUFFIX="${TICS_NAME}${DFT_DEP_SUFFIX}"
		TICS_LIB_SUFFIX="${TICS_NAME}${USE_LIB_SUFFIX}"
	fi
	TICS_LDFLAGS="-L${LIB_DIR}"
	TICS_LIBS="-l${TICS_ARG_SUFFIX}"
else
	TICS_SUFFIX=${DFT_LIB_SUFFIX}
	TICS_LDFLAGS="-L${LIB_DIR}"
	TICS_LIBS="-l${LIB_NAME}${USE_ARG_SUFFIX}"
fi
AC_SUBST(TICS_ARG_SUFFIX)
AC_SUBST(TICS_DEP_SUFFIX)
AC_SUBST(TICS_LIB_SUFFIX)
AC_SUBST(TICS_LDFLAGS)
AC_SUBST(TICS_LIBS)

if test "$with_termlib" != no ; then

	if test "x$with_termlib" != xyes ; then
		TINFO_NAME=$with_termlib
		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="${TINFO_NAME}${USE_ARG_SUFFIX}"
		TINFO_DEP_SUFFIX="${TINFO_NAME}${DFT_DEP_SUFFIX}"
		TINFO_LIB_SUFFIX="${TINFO_NAME}${USE_LIB_SUFFIX}"
	fi

	TEST_DEPS="${LIB_DIR}/${LIB_PREFIX}${TINFO_DEP_SUFFIX}"
	TEST_DEP2="${LIB_2ND}/${LIB_PREFIX}${TINFO_DEP_SUFFIX}"
	if test "$DFT_LWR_MODEL" = "libtool"; then
		TEST_ARGS="${TEST_DEPS}"
		TEST_ARG2="${TEST_DEP2}"
		TINFO_LDFLAGS="-L${LIB_DIR}"
		TINFO_LIBS="$TEST_ARGS"
		TICS_LIST="$SHLIB_LIST $TEST_ARGS"
		SHLIB_LIST="${SHLIB_LIST} $TEST_ARGS"
	else
		TEST_ARGS="-l${TINFO_ARG_SUFFIX}"
		TEST_ARG2="-l${TINFO_ARG_SUFFIX}"
		if test "x$with_term_driver" != xno ; then
			TICS_LIST="$SHLIB_LIST -l${LIB_NAME}${USE_ARG_SUFFIX}"
			TICS_LIBS="$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"
		fi
		TINFO_LDFLAGS="-L${LIB_DIR}"
		SHLIB_LIST="$SHLIB_LIST -l${TINFO_LIB_SUFFIX}"
	fi
else
	# the next lines are needed for linking libtic over libncurses
	TINFO_NAME=${LIB_NAME}
	TINFO_SUFFIX=${DFT_LIB_SUFFIX}
	TINFO_ARG_SUFFIX=${LIB_NAME}${USE_ARG_SUFFIX}
	if test "x$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}${USE_ARG_SUFFIX}"
fi

if test "$DFT_LWR_MODEL" = shared ; then
	case "$cf_cv_system_name" in
	(cygwin*|msys*)
		# "lib" files have ".dll.a" suffix, "cyg"or "msys-" files have ".dll"
		TINFO_SUFFIX=.dll
		;;
	esac
fi

AC_SUBST(TINFO_ARG_SUFFIX)
AC_SUBST(TINFO_DEP_SUFFIX)
AC_SUBST(TINFO_LIB_SUFFIX)
AC_SUBST(TINFO_LDFLAGS)
AC_SUBST(TINFO_LIBS)

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
fi

# needed for Ada95
TINFO_LDFLAGS2=`echo "$TINFO_LDFLAGS" | sed -e 's,-L\.\./,-L../../,'`
AC_SUBST(TINFO_LDFLAGS2)

case "$DFT_LWR_MODEL" in
(normal|debug|profile)
	CF_LDFLAGS_STATIC
	;;
esac

AC_MSG_CHECKING(where we will install curses.h)
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.
if test "$with_overwrite" != no ; then
if test "$NCURSES_LIBUTF8" = 1 ; then
	NCURSES_LIBUTF8='defined(HAVE_LIBUTF8_H)'
	AC_MSG_WARN(Wide-character applications must define HAVE_LIBUTF8_H to include curses.h)
fi
fi
WITH_OVERWRITE=$with_overwrite

### At least on MinGW a shared library build without libtool
### requires adding the additional libs to the link list.
case "$cf_cv_system_name" in
(*mingw32*|*mingw64*)
	if test "$DFT_LWR_MODEL" != "libtool"; then
   	   SHLIB_LIST="$SHLIB_LIST ${LIBS}"
	fi
	;;
*)	;;
esac

AC_SUBST(WITH_OVERWRITE)
AC_SUBST(TICS_LIST)
AC_SUBST(TINFO_LIST)
AC_SUBST(SHLIB_LIST)

### predefined stuff for the test programs
AC_DEFINE(HAVE_SLK_COLOR,1,[Define to 1 if we have slk_color for test-programs])

# pkgsrc uses these
CF_HELP_MESSAGE(Library basenames for pkgsrc:)
CF_WITH_LIB_BASENAME(FORM_NAME,form)
CF_WITH_LIB_BASENAME(MENU_NAME,menu)
CF_WITH_LIB_BASENAME(PANEL_NAME,panel)
CF_WITH_LIB_BASENAME(CXX_NAME,cxx,ncurses++)

### Construct the list of subdirectories for which we'll customize makefiles
### with the appropriate compile-rules.

CF_SRC_MODULES($modules_to_build)

if test "x$cf_with_ada" = "xyes" && test "x$cf_cv_prog_gnat_correct" = "xyes"; then
   SUB_MAKEFILES="$SUB_MAKEFILES Ada95/src/library.gpr:Ada95/src/library.gpr.in"
   SUB_MAKEFILES="$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=$SHELL' $(top_srcdir)/misc/shlib'
AC_SUBST(NCURSES_SHLIB2)

# values to use as strings
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}",[Define to 1 if machine has ample memory for tic])

### Define substitutions for header files to avoid name-pollution
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$ac_cv_header_sgtty_h" = xyes],   HAVE_SGTTY_H,   1, 0)
CF_SUBST_IF(["x$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)

case "x${ac_cv_header_termios_h}${ac_cv_header_termio_h}${ac_cv_header_sgtty_h}${cf_cv_have_tcgetattr}" in
(*yes*)
	;;
(*)
	case "$cf_cv_system_name" in
	(*mingw32*|*mingw64*|*-msvc*)
		;;
	(*)
		AC_MSG_ERROR(No termio/termios/sgtty found)
		;;
	esac
	;;
esac

################################################################################
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${USE_CFG_SUFFIX}-config.1:man/MKncu_config.in"

if test "x$enable_pc_files" = xyes && test -z "$MAKE_PC_FILES" ; then
SUB_MAKEFILES="$SUB_MAKEFILES misc/gen-pkgconfig:misc/gen-pkgconfig.in"
fi
AC_SUBST(cross_compiling)

if test "x$cf_with_tests" != xno ; then
	MAKE_TESTS=
else
	MAKE_TESTS="#"
fi
AC_SUBST(MAKE_TESTS)

ADAHTML_DIR=../../doc/html/ada
AC_SUBST(ADAHTML_DIR)

# 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${USE_CFG_SUFFIX}${cf_config_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)
CF_GLOB_FULLPATH

# 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)

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_default)
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)

# This is used for the *-config script and *.pc data files.
CF_LD_SEARCHPATH

AC_OUTPUT( \
	include/MKterm.h.awk \
	include/curses.head:include/curses.h.in \
	include/ncurses_dll.h \
	include/nc_win32.h \
	include/termcap.h \
	include/unctrl.h \
	man/man_db.renames \
	$SUB_MAKEFILES \
	Makefile,[
if test "x$cf_with_tests" != xno ; then
	CF_PRG_RULES(["$srcdir/test/mk-test.awk" INSTALL=no ECHO_LINK="$ECHO_LD"], test)
fi
CF_LIB_RULES($SRC_SUBDIRS)
CF_OUTPUT_MANPAGE_RENAMES

if test "x$cf_with_ada" = "xyes" && test "x$cf_cv_prog_gnat_correct" = "xyes"; then
if test -z "$USE_OLD_MAKERULES" ; then
	$AWK -f "$srcdir/Ada95/mk-1st.awk" <"$srcdir/Ada95/src/modules" >>Ada95/src/Makefile
fi
fi
],[
### Special initialization commands, used to pass information from the
### configuration-run into config.status

ALTERNATE_SYMS="$ALTERNATE_SYMS"
AWK="$AWK"
CXX_NAME="$CXX_NAME"
DFT_ARG_SUFFIX="$DFT_ARG_SUFFIX"
DFT_LWR_MODEL="$DFT_LWR_MODEL"
ECHO_LD="$ECHO_LD"
EXTRA_SUFFIX="$EXTRA_SUFFIX"
FORM_NAME="$FORM_NAME"
GLOB_FULLPATH_OTHER="$GLOB_FULLPATH_OTHER"
GLOB_FULLPATH_POSIX="$GLOB_FULLPATH_POSIX"
LDCONFIG="$LDCONFIG"
LIBTOOL_VERSION="$LIBTOOL_VERSION"
LIB_NAME="$LIB_NAME"
LIB_PREFIX="$LIB_PREFIX"
LIB_SUBSETS="$LIB_SUBSETS"
LIB_SUFFIX="$LIB_SUFFIX"
LIB_TRACING="$LIB_TRACING"
LN_S="$LN_S"
MAKE_TERMINFO="$MAKE_TERMINFO"
MANPAGE_RENAMES="$MANPAGE_RENAMES"
MENU_NAME="$MENU_NAME"
NCURSES_MAJOR="$NCURSES_MAJOR"
NCURSES_MINOR="$NCURSES_MINOR"
NCURSES_OSPEED="$NCURSES_OSPEED"
NCURSES_PATCH="$NCURSES_PATCH"
PANEL_NAME="$PANEL_NAME"
SRC_SUBDIRS="$SRC_SUBDIRS"
TERMINFO="$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="${enable_echo:=yes}"
WITH_OVERWRITE="$with_overwrite"
cf_LIST_MODELS="$cf_list_models"
cf_cv_VERSION_GNATMAKE=$cf_cv_VERSION_GNATMAKE
cf_cv_VERSION_GPRBUILD=$cf_cv_VERSION_GPRBUILD
cf_cv_abi_default="$cf_cv_abi_default"
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"
cf_cv_make_PHONY="$cf_cv_make_PHONY"
cf_cv_prog_CC_c_o=$cf_cv_prog_CC_c_o
cf_cv_prog_CXX_c_o=$cf_cv_prog_CXX_c_o
cf_cv_prog_gnat_correct=$cf_cv_prog_gnat_correct
cf_cv_rel_version="$cf_cv_rel_version"
cf_cv_rm_so_locs="$cf_cv_rm_so_locs"
cf_cv_shared_soname='$cf_cv_shared_soname'
cf_cv_shlib_version="$cf_cv_shlib_version"
cf_cv_shlib_version_infix="$cf_cv_shlib_version_infix"
cf_cv_system_name="$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"
verbose="$verbose"
with_shared_cxx="$with_shared_cxx"

],cat)dnl
${MAKE:-make} preinstall
