aclocal.m4

This version of dialog, formerly known as cdialog is based on the Debian package for dialog 0.9a (se

[
AC_REQUIRE([CF_UNION_WAIT])
if test $cf_cv_type_unionwait = yes; then

	AC_MSG_CHECKING(if union wait can be used as wait-arg)
	AC_CACHE_VAL(cf_cv_arg_union_wait,[
		AC_TRY_COMPILE($cf_wait_headers,
 			[union wait x; wait(&x)],
			[cf_cv_arg_union_wait=yes],
			[cf_cv_arg_union_wait=no])
		])
	AC_MSG_RESULT($cf_cv_arg_union_wait)
	test $cf_cv_arg_union_wait = yes && AC_DEFINE(WAIT_USES_UNION)

	AC_MSG_CHECKING(if union wait can be used as waitpid-arg)
	AC_CACHE_VAL(cf_cv_arg_union_waitpid,[
		AC_TRY_COMPILE($cf_wait_headers,
 			[union wait x; waitpid(0, &x, 0)],
			[cf_cv_arg_union_waitpid=yes],
			[cf_cv_arg_union_waitpid=no])
		])
	AC_MSG_RESULT($cf_cv_arg_union_waitpid)
	test $cf_cv_arg_union_waitpid = yes && AC_DEFINE(WAITPID_USES_UNION)

fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_GCC_ATTRIBUTES version: 9 updated: 2002/12/21 19:25:52
dnl -----------------
dnl Test for availability of useful gcc __attribute__ directives to quiet
dnl compiler warnings.  Though useful, not all are supported -- and contrary
dnl to documentation, unrecognized directives cause older compilers to barf.
AC_DEFUN([CF_GCC_ATTRIBUTES],
[
if test "$GCC" = yes
then
cat > conftest.i <<EOF
#ifndef GCC_PRINTF
#define GCC_PRINTF 0
#endif
#ifndef GCC_SCANF
#define GCC_SCANF 0
#endif
#ifndef GCC_NORETURN
#define GCC_NORETURN /* nothing */
#endif
#ifndef GCC_UNUSED
#define GCC_UNUSED /* nothing */
#endif
EOF
if test "$GCC" = yes
then
	AC_CHECKING([for $CC __attribute__ directives])
cat > conftest.$ac_ext <<EOF
#line __oline__ "configure"
#include "confdefs.h"
#include "conftest.h"
#include "conftest.i"
#if	GCC_PRINTF
#define GCC_PRINTFLIKE(fmt,var) __attribute__((format(printf,fmt,var)))
#else
#define GCC_PRINTFLIKE(fmt,var) /*nothing*/
#endif
#if	GCC_SCANF
#define GCC_SCANFLIKE(fmt,var)  __attribute__((format(scanf,fmt,var)))
#else
#define GCC_SCANFLIKE(fmt,var)  /*nothing*/
#endif
extern void wow(char *,...) GCC_SCANFLIKE(1,2);
extern void oops(char *,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
extern void foo(void) GCC_NORETURN;
int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { return 0; }
EOF
	for cf_attribute in scanf printf unused noreturn
	do
		CF_UPPER(CF_ATTRIBUTE,$cf_attribute)
		cf_directive="__attribute__(($cf_attribute))"
		echo "checking for $CC $cf_directive" 1>&AC_FD_CC
		case $cf_attribute in
		scanf|printf)
		cat >conftest.h <<EOF
#define GCC_$CF_ATTRIBUTE 1
EOF
			;;
		*)
		cat >conftest.h <<EOF
#define GCC_$CF_ATTRIBUTE $cf_directive
EOF
			;;
		esac
		if AC_TRY_EVAL(ac_compile); then
			test -n "$verbose" && AC_MSG_RESULT(... $cf_attribute)
			cat conftest.h >>confdefs.h
		fi
	done
else
	fgrep define conftest.i >>confdefs.h
fi
rm -rf conftest*
fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_GCC_VERSION version: 3 updated: 2003/09/06 19:16:57
dnl --------------
dnl Find version of gcc
AC_DEFUN([CF_GCC_VERSION],[
AC_REQUIRE([AC_PROG_CC])
GCC_VERSION=none
if test "$GCC" = yes ; then
	AC_MSG_CHECKING(version of $CC)
	GCC_VERSION="`${CC} --version|sed -e '2,$d' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
	test -z "$GCC_VERSION" && GCC_VERSION=unknown
	AC_MSG_RESULT($GCC_VERSION)
fi
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_GCC_WARNINGS version: 15 updated: 2003/07/05 18:42:30
dnl ---------------
dnl Check if the compiler supports useful warning options.  There's a few that
dnl we don't use, simply because they're too noisy:
dnl
dnl	-Wconversion (useful in older versions of gcc, but not in gcc 2.7.x)
dnl	-Wredundant-decls (system headers make this too noisy)
dnl	-Wtraditional (combines too many unrelated messages, only a few useful)
dnl	-Wwrite-strings (too noisy, but should review occasionally).  This
dnl		is enabled for ncurses using "--enable-const".
dnl	-pedantic
dnl
AC_DEFUN([CF_GCC_WARNINGS],
[
AC_REQUIRE([CF_GCC_VERSION])
if test "$GCC" = yes
then
	cat > conftest.$ac_ext <<EOF
#line __oline__ "configure"
int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
EOF
	AC_CHECKING([for $CC warning options])
	cf_save_CFLAGS="$CFLAGS"
	EXTRA_CFLAGS="-W -Wall"
	cf_warn_CONST=""
	test "$with_ext_const" = yes && cf_warn_CONST="Wwrite-strings"
	for cf_opt in \
		Wbad-function-cast \
		Wcast-align \
		Wcast-qual \
		Winline \
		Wmissing-declarations \
		Wmissing-prototypes \
		Wnested-externs \
		Wpointer-arith \
		Wshadow \
		Wstrict-prototypes \
		Wundef $cf_warn_CONST
	do
		CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
		if AC_TRY_EVAL(ac_compile); then
			test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
			case $cf_opt in #(vi
			Wcast-qual) #(vi
				CPPFLAGS="$CPPFLAGS -DXTSTRINGDEFINES"
				;;
			Winline) #(vi
				case $GCC_VERSION in
				3.3*)
					CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
					continue;;
				esac
				;;
			esac
			EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
		fi
	done
	rm -f conftest*
	CFLAGS="$cf_save_CFLAGS"
fi
AC_SUBST(EXTRA_CFLAGS)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_GNU_SOURCE version: 3 updated: 2000/10/29 23:30:53
dnl -------------
dnl Check if we must define _GNU_SOURCE to get a reasonable value for
dnl _XOPEN_SOURCE, upon which many POSIX definitions depend.  This is a defect
dnl (or misfeature) of glibc2, which breaks portability of many applications,
dnl since it is interwoven with GNU extensions.
dnl
dnl Well, yes we could work around it...
AC_DEFUN([CF_GNU_SOURCE],
[
AC_CACHE_CHECK(if we must define _GNU_SOURCE,cf_cv_gnu_source,[
AC_TRY_COMPILE([#include <sys/types.h>],[
#ifndef _XOPEN_SOURCE
make an error
#endif],
	[cf_cv_gnu_source=no],
	[cf_save="$CPPFLAGS"
	 CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
	 AC_TRY_COMPILE([#include <sys/types.h>],[
#ifdef _XOPEN_SOURCE
make an error
#endif],
	[cf_cv_gnu_source=no],
	[cf_cv_gnu_source=yes])
	CPPFLAGS="$cf_save"
	])
])
test "$cf_cv_gnu_source" = yes && CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_HEADER_PATH version: 8 updated: 2002/11/10 14:46:59
dnl --------------
dnl Construct a search-list for a nonstandard header-file
AC_DEFUN([CF_HEADER_PATH],
[CF_SUBDIR_PATH($1,$2,include)
test "$includedir" != NONE && \
test "$includedir" != "/usr/include" && \
test -d "$includedir" && {
	test -d $includedir &&    $1="[$]$1 $includedir"
	test -d $includedir/$2 && $1="[$]$1 $includedir/$2"
}

test "$oldincludedir" != NONE && \
test "$oldincludedir" != "/usr/include" && \
test -d "$oldincludedir" && {
	test -d $oldincludedir    && $1="[$]$1 $oldincludedir"
	test -d $oldincludedir/$2 && $1="[$]$1 $oldincludedir/$2"
}

])dnl
dnl ---------------------------------------------------------------------------
dnl CF_HELP_MESSAGE version: 3 updated: 1998/01/14 10:56:23
dnl ---------------
dnl Insert text into the help-message, for readability, from AC_ARG_WITH.
AC_DEFUN([CF_HELP_MESSAGE],
[AC_DIVERT_HELP([$1])dnl
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_INCLUDE_DIRS version: 4 updated: 2002/12/01 00:12:15
dnl ---------------
dnl Construct the list of include-options according to whether we're building
dnl in the source directory or using '--srcdir=DIR' option.  If we're building
dnl with gcc, don't append the includedir if it happens to be /usr/include,
dnl since that usually breaks gcc's shadow-includes.
AC_DEFUN([CF_INCLUDE_DIRS],
[
CPPFLAGS="-I. -I../include $CPPFLAGS"
if test "$srcdir" != "."; then
	CPPFLAGS="-I\$(srcdir)/../include $CPPFLAGS"
fi
if test "$GCC" != yes; then
	CPPFLAGS="$CPPFLAGS -I\$(includedir)"
elif test "$includedir" != "/usr/include"; then
	if test "$includedir" = '${prefix}/include' ; then
		if test $prefix != /usr ; then
			CPPFLAGS="$CPPFLAGS -I\$(includedir)"
		fi
	else
		CPPFLAGS="$CPPFLAGS -I\$(includedir)"
	fi
fi
AC_SUBST(CPPFLAGS)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_INCLUDE_PATH version: 4 updated: 2001/04/15 21:21:45
dnl ---------------
dnl	Adds to the include-path
dnl
dnl	Autoconf 1.11 should have provided a way to add include path options to
dnl	the cpp-tests.
dnl
AC_DEFUN([CF_INCLUDE_PATH],
[
for cf_path in $1
do
	cf_result="no"
	AC_MSG_CHECKING(for directory $cf_path)
	if test -d $cf_path
	then
		INCLUDES="$INCLUDES -I$cf_path"
		ac_cpp="${ac_cpp} -I$cf_path"
		CFLAGS="$CFLAGS -I$cf_path"
		cf_result="yes"
		case $cf_path in
		/usr/include|/usr/include/*)
			;;
		*)
			CF_DIRNAME(cf_temp,$cf_path)
			case $cf_temp in
			*/include)
				INCLUDES="$INCLUDES -I$cf_temp"
				ac_cpp="${ac_cpp} -I$cf_temp"
				CFLAGS="$CFLAGS -I$cf_temp"
				;;
			esac
		esac
	fi
	AC_MSG_RESULT($cf_result)
done
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_LIBRARY_PATH version: 7 updated: 2002/11/10 14:46:59
dnl ---------------
dnl Construct a search-list for a nonstandard library-file
AC_DEFUN([CF_LIBRARY_PATH],
[CF_SUBDIR_PATH($1,$2,lib)])dnl
dnl ---------------------------------------------------------------------------
dnl CF_LIB_PREFIX version: 7 updated: 2001/01/12 01:23:48
dnl -------------
dnl Compute the library-prefix for the given host system
dnl $1 = variable to set
AC_DEFUN([CF_LIB_PREFIX],
[
	case $cf_cv_system_name in
	OS/2*)	LIB_PREFIX=''     ;;
	os2*)	LIB_PREFIX=''     ;;
	*)	LIB_PREFIX='lib'  ;;
	esac
ifelse($1,,,[$1=$LIB_PREFIX])
	AC_SUBST(LIB_PREFIX)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_MAKEFLAGS version: 9 updated: 2001/12/30 18:17:27
dnl ------------
dnl Some 'make' programs support $(MAKEFLAGS), some $(MFLAGS), to pass 'make'
dnl options to lower-levels.  It's very useful for "make -n" -- if we have it.
dnl (GNU 'make' does both, something POSIX 'make', which happens to make the
dnl $(MAKEFLAGS) variable incompatible because it adds the assignments :-)
AC_DEFUN([CF_MAKEFLAGS],
[
AC_CACHE_CHECK(for makeflags variable, cf_cv_makeflags,[
	cf_cv_makeflags=''
	for cf_option in '-$(MAKEFLAGS)' '$(MFLAGS)'
	do
		cat >cf_makeflags.tmp <<CF_EOF
SHELL = /bin/sh
all :
	@ echo '.$cf_option'
CF_EOF
		cf_result=`${MAKE-make} -k -f cf_makeflags.tmp 2>/dev/null`
		case "$cf_result" in
		.*k)
			cf_result=`${MAKE-make} -k -f cf_makeflags.tmp CC=cc 2>/dev/null`
			case "$cf_result" in
			.*CC=*)	cf_cv_makeflags=
				;;
			*)	cf_cv_makeflags=$cf_option
				;;
			esac
			break
			;;
		*)	echo no match "$cf_result"
			;;
		esac
	done
	rm -f cf_makeflags.tmp
])

AC_SUBST(cf_cv_makeflags)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_MAKE_TAGS version: 2 updated: 2000/10/04 09:18:40
dnl ------------
dnl Generate tags/TAGS targets for makefiles.  Do not generate TAGS if we have
dnl a monocase filesystem.
AC_DEFUN([CF_MAKE_TAGS],[
AC_REQUIRE([CF_MIXEDCASE_FILENAMES])
AC_CHECK_PROG(MAKE_LOWER_TAGS, ctags, yes, no)

if test "$cf_cv_mixedcase" = yes ; then
	AC_CHECK_PROG(MAKE_UPPER_TAGS, etags, yes, no)
else
	MAKE_UPPER_TAGS=no
fi

if test "$MAKE_UPPER_TAGS" = yes ; then
	MAKE_UPPER_TAGS=
else
	MAKE_UPPER_TAGS="#"
fi
AC_SUBST(MAKE_UPPER_TAGS)

if test "$MAKE_LOWER_TAGS" = yes ; then
	MAKE_LOWER_TAGS=
else
	MAKE_LOWER_TAGS="#"
fi
AC_SUBST(MAKE_LOWER_TAGS)
])dnl
dnl ---------------------------------------------------------------------------
dnl CF_MATH_LIB version: 5 updated: 2000/05/28 01:39:10
dnl -----------
dnl Checks for libraries.  At least one UNIX system, Apple Macintosh
dnl Rhapsody 5.5, does not have -lm.  We cannot use the simpler
dnl AC_CHECK_LIB(m,sin), because that fails for C++.
AC_DEFUN([CF_MATH_LIB],
[
AC_CACHE_CHECK(if -lm needed for math functions,
	cf_cv_need_libm,[
	AC_TRY_LINK([