1 dnl aclocal.m4 generated automatically by aclocal 1.4a
3 dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 dnl This program is distributed in the hope that it will be useful,
9 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
10 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
11 dnl PARTICULAR PURPOSE.
15 dnl Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
16 dnl COPYING RESTRICTIONS APPLY, See COPYRIGHT file
18 dnl OpenLDAP Autoconf Macros
21 builtin(include, build/openldap.m4)dnl
23 # Do all the work for Automake. This macro actually does too much --
24 # some checks are only needed if your package does certain things.
25 # But this isn't really a big deal.
30 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
32 AC_DEFUN(AM_INIT_AUTOMAKE,
33 [AC_REQUIRE([AC_PROG_INSTALL])
34 dnl We require 2.13 because we rely on SHELL being computed by configure.
40 dnl test to see if srcdir already configured
41 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
42 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
45 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
46 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
47 AC_REQUIRE([AM_SANITY_CHECK])
48 AC_REQUIRE([AC_ARG_PROGRAM])
49 dnl FIXME This is truly gross.
50 missing_dir=`cd $ac_aux_dir && pwd`
51 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
52 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
53 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
54 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
55 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
56 dnl Set install_sh for make dist
57 install_sh="$missing_dir/install-sh"
58 test -f "$install_sh" || install_sh="$missing_dir/install.sh"
60 dnl We check for tar when the user configures the end package.
61 dnl This is sad, since we only need this for "dist". However,
62 dnl there's no other good way to do it. We prefer GNU tar if
63 dnl we can find it. If we can't find a tar, it doesn't really matter.
64 AC_CHECK_PROGS(AMTAR, gnutar gtar tar)
65 dnl We need awk for the "check" target. The system "awk" is bad on
67 AC_REQUIRE([AC_PROG_AWK])
69 if test -n "$AMTAR"; then
70 if $SHELL -c "$AMTAR --version" > /dev/null 2>&1; then
76 AC_REQUIRE([AC_PROG_MAKE_SET])])
79 # Check to make sure that the build environment is sane.
82 AC_DEFUN(AM_SANITY_CHECK,
83 [AC_MSG_CHECKING([whether build environment is sane])
86 echo timestamp > conftestfile
87 # Do `set' in a subshell so we don't clobber the current shell's
88 # arguments. Must try -L first in case configure is actually a
89 # symlink; some systems play weird games with the mod time of symlinks
90 # (eg FreeBSD returns the mod time of the symlink's containing
93 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
94 if test "[$]*" = "X"; then
96 set X `ls -t $srcdir/configure conftestfile`
98 if test "[$]*" != "X $srcdir/configure conftestfile" \
99 && test "[$]*" != "X conftestfile $srcdir/configure"; then
101 # If neither matched, then we have a broken ls. This can happen
102 # if, for instance, CONFIG_SHELL is bash and it inherits a
103 # broken ls alias from the environment. This has actually
104 # happened. Such a system could not be considered "sane".
105 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
106 alias in your environment])
109 test "[$]2" = conftestfile
115 AC_MSG_ERROR([newly created file is older than distributed files!
116 Check your system clock])
121 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
122 dnl The program must properly implement --version.
123 AC_DEFUN(AM_MISSING_PROG,
124 [AC_MSG_CHECKING(for working $2)
125 # Run test in a subshell; some versions of sh will print an error if
126 # an executable is not found, even if stderr is redirected.
127 # Redirect stdin to placate older versions of autoconf. Sigh.
128 if ($2 --version) < /dev/null > /dev/null 2>&1; then
133 AC_MSG_RESULT(missing)
138 # serial 40 AC_PROG_LIBTOOL
139 AC_DEFUN(AC_PROG_LIBTOOL,
140 [AC_REQUIRE([AC_LIBTOOL_SETUP])dnl
142 # Save cache, so that ltconfig can load it
145 # Actually configure libtool. ac_aux_dir is where install-sh is found.
146 CC="$CC" CFLAGS="$CFLAGS" CPPFLAGS="$CPPFLAGS" \
147 LD="$LD" LDFLAGS="$LDFLAGS" LIBS="$LIBS" \
148 LN_S="$LN_S" NM="$NM" RANLIB="$RANLIB" \
149 DLLTOOL="$DLLTOOL" AS="$AS" OBJDUMP="$OBJDUMP" \
150 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/ltconfig --no-reexec \
151 $libtool_flags --no-verify $ac_aux_dir/ltmain.sh $lt_target \
152 || AC_MSG_ERROR([libtool configure failed])
154 # Reload cache, that may have been modified by ltconfig
157 # This can be used to rebuild libtool when needed
158 LIBTOOL_DEPS="$ac_aux_dir/ltconfig $ac_aux_dir/ltmain.sh"
160 # Always use our own libtool.
161 LIBTOOL='$(SHELL) $(top_builddir)/libtool'
164 # Redirect the config.log output again, so that the ltconfig log is not
165 # clobbered by the next message.
169 AC_DEFUN(AC_LIBTOOL_SETUP,
171 AC_REQUIRE([AC_ENABLE_SHARED])dnl
172 AC_REQUIRE([AC_ENABLE_STATIC])dnl
173 AC_REQUIRE([AC_ENABLE_FAST_INSTALL])dnl
174 AC_REQUIRE([AC_CANONICAL_HOST])dnl
175 AC_REQUIRE([AC_CANONICAL_BUILD])dnl
176 AC_REQUIRE([AC_PROG_RANLIB])dnl
177 AC_REQUIRE([AC_PROG_CC])dnl
178 AC_REQUIRE([AC_PROG_LD])dnl
179 AC_REQUIRE([AC_PROG_NM])dnl
180 AC_REQUIRE([AC_PROG_LN_S])dnl
184 NONE) lt_target="$host" ;;
185 *) lt_target="$target" ;;
188 # Check for any special flags to pass to ltconfig.
189 libtool_flags="--cache-file=$cache_file"
190 test "$enable_shared" = no && libtool_flags="$libtool_flags --disable-shared"
191 test "$enable_static" = no && libtool_flags="$libtool_flags --disable-static"
192 test "$enable_fast_install" = no && libtool_flags="$libtool_flags --disable-fast-install"
193 test "$ac_cv_prog_gcc" = yes && libtool_flags="$libtool_flags --with-gcc"
194 test "$ac_cv_prog_gnu_ld" = yes && libtool_flags="$libtool_flags --with-gnu-ld"
195 ifdef([AC_PROVIDE_AC_LIBTOOL_DLOPEN],
196 [libtool_flags="$libtool_flags --enable-dlopen"])
197 ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],
198 [libtool_flags="$libtool_flags --enable-win32-dll"])
199 AC_ARG_ENABLE(libtool-lock,
200 [ --disable-libtool-lock avoid locking (might break parallel builds)])
201 test "x$enable_libtool_lock" = xno && libtool_flags="$libtool_flags --disable-lock"
202 test x"$silent" = xyes && libtool_flags="$libtool_flags --silent"
204 # Some flags need to be propagated to the compiler or linker for good
208 # Find out which ABI we are using.
209 echo '[#]line __oline__ "configure"' > conftest.$ac_ext
210 if AC_TRY_EVAL(ac_compile); then
211 case "`/usr/bin/file conftest.o`" in
227 # On SCO OpenServer 5, we need -belf to get full-featured binaries.
228 SAVE_CFLAGS="$CFLAGS"
229 CFLAGS="$CFLAGS -belf"
230 AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
231 [AC_TRY_LINK([],[],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])])
232 if test x"$lt_cv_cc_needs_belf" != x"yes"; then
233 # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
234 CFLAGS="$SAVE_CFLAGS"
238 ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],
239 [*-*-cygwin* | *-*-mingw*)
240 AC_CHECK_TOOL(DLLTOOL, dlltool, false)
241 AC_CHECK_TOOL(AS, as, false)
242 AC_CHECK_TOOL(OBJDUMP, objdump, false)
248 # AC_LIBTOOL_DLOPEN - enable checks for dlopen support
249 AC_DEFUN(AC_LIBTOOL_DLOPEN, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])])
251 # AC_LIBTOOL_WIN32_DLL - declare package support for building win32 dll's
252 AC_DEFUN(AC_LIBTOOL_WIN32_DLL, [AC_BEFORE([$0], [AC_LIBTOOL_SETUP])])
254 # AC_ENABLE_SHARED - implement the --enable-shared flag
255 # Usage: AC_ENABLE_SHARED[(DEFAULT)]
256 # Where DEFAULT is either `yes' or `no'. If omitted, it defaults to
258 AC_DEFUN(AC_ENABLE_SHARED, [dnl
259 define([AC_ENABLE_SHARED_DEFAULT], ifelse($1, no, no, yes))dnl
260 AC_ARG_ENABLE(shared,
261 changequote(<<, >>)dnl
262 << --enable-shared[=PKGS] build shared libraries [default=>>AC_ENABLE_SHARED_DEFAULT],
264 [p=${PACKAGE-default}
266 yes) enable_shared=yes ;;
267 no) enable_shared=no ;;
270 # Look at the argument we got. We use all the common list separators.
271 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
272 for pkg in $enableval; do
273 if test "X$pkg" = "X$p"; then
280 enable_shared=AC_ENABLE_SHARED_DEFAULT)dnl
283 # AC_DISABLE_SHARED - set the default shared flag to --disable-shared
284 AC_DEFUN(AC_DISABLE_SHARED, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl
285 AC_ENABLE_SHARED(no)])
287 # AC_ENABLE_STATIC - implement the --enable-static flag
288 # Usage: AC_ENABLE_STATIC[(DEFAULT)]
289 # Where DEFAULT is either `yes' or `no'. If omitted, it defaults to
291 AC_DEFUN(AC_ENABLE_STATIC, [dnl
292 define([AC_ENABLE_STATIC_DEFAULT], ifelse($1, no, no, yes))dnl
293 AC_ARG_ENABLE(static,
294 changequote(<<, >>)dnl
295 << --enable-static[=PKGS] build static libraries [default=>>AC_ENABLE_STATIC_DEFAULT],
297 [p=${PACKAGE-default}
299 yes) enable_static=yes ;;
300 no) enable_static=no ;;
303 # Look at the argument we got. We use all the common list separators.
304 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
305 for pkg in $enableval; do
306 if test "X$pkg" = "X$p"; then
313 enable_static=AC_ENABLE_STATIC_DEFAULT)dnl
316 # AC_DISABLE_STATIC - set the default static flag to --disable-static
317 AC_DEFUN(AC_DISABLE_STATIC, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl
318 AC_ENABLE_STATIC(no)])
321 # AC_ENABLE_FAST_INSTALL - implement the --enable-fast-install flag
322 # Usage: AC_ENABLE_FAST_INSTALL[(DEFAULT)]
323 # Where DEFAULT is either `yes' or `no'. If omitted, it defaults to
325 AC_DEFUN(AC_ENABLE_FAST_INSTALL, [dnl
326 define([AC_ENABLE_FAST_INSTALL_DEFAULT], ifelse($1, no, no, yes))dnl
327 AC_ARG_ENABLE(fast-install,
328 changequote(<<, >>)dnl
329 << --enable-fast-install[=PKGS] optimize for fast installation [default=>>AC_ENABLE_FAST_INSTALL_DEFAULT],
331 [p=${PACKAGE-default}
333 yes) enable_fast_install=yes ;;
334 no) enable_fast_install=no ;;
336 enable_fast_install=no
337 # Look at the argument we got. We use all the common list separators.
338 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
339 for pkg in $enableval; do
340 if test "X$pkg" = "X$p"; then
341 enable_fast_install=yes
347 enable_fast_install=AC_ENABLE_FAST_INSTALL_DEFAULT)dnl
350 # AC_ENABLE_FAST_INSTALL - set the default to --disable-fast-install
351 AC_DEFUN(AC_DISABLE_FAST_INSTALL, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl
352 AC_ENABLE_FAST_INSTALL(no)])
354 # AC_PROG_LD - find the path to the GNU or non-GNU linker
357 [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],
358 test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
359 AC_REQUIRE([AC_PROG_CC])dnl
360 AC_REQUIRE([AC_CANONICAL_HOST])dnl
361 AC_REQUIRE([AC_CANONICAL_BUILD])dnl
363 if test "$ac_cv_prog_gcc" = yes; then
364 # Check if gcc -print-prog-name=ld gives a path.
365 AC_MSG_CHECKING([for ld used by GCC])
366 ac_prog=`($CC -print-prog-name=ld) 2>&5`
368 # Accept absolute paths.
370 [\\/]* | [A-Za-z]:[\\/]*)
371 re_direlt='/[^/][^/]*/\.\./'
373 # Canonicalize the path of ld
374 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
375 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
376 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
378 test -z "$LD" && LD="$ac_prog"
381 # If it fails, then pretend we aren't using GCC.
385 # If it is relative, then search for the first ld in PATH.
389 elif test "$with_gnu_ld" = yes; then
390 AC_MSG_CHECKING([for GNU ld])
392 AC_MSG_CHECKING([for non-GNU ld])
394 AC_CACHE_VAL(ac_cv_path_LD,
395 [if test -z "$LD"; then
396 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
397 for ac_dir in $PATH; do
398 test -z "$ac_dir" && ac_dir=.
399 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
400 ac_cv_path_LD="$ac_dir/$ac_prog"
401 # Check to see if the program is GNU ld. I'd rather use --version,
402 # but apparently some GNU ld's only accept -v.
403 # Break only if it was the GNU/non-GNU ld that we prefer.
404 if "$ac_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
405 test "$with_gnu_ld" != no && break
407 test "$with_gnu_ld" != yes && break
413 ac_cv_path_LD="$LD" # Let the user override the test with a path.
416 if test -n "$LD"; then
421 test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
425 AC_DEFUN(AC_PROG_LD_GNU,
426 [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], ac_cv_prog_gnu_ld,
427 [# I'd rather use --version here, but apparently some GNU ld's only accept -v.
428 if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
429 ac_cv_prog_gnu_ld=yes
435 # AC_PROG_NM - find the path to a BSD-compatible name lister
437 [AC_MSG_CHECKING([for BSD-compatible nm])
438 AC_CACHE_VAL(ac_cv_path_NM,
439 [if test -n "$NM"; then
440 # Let the user override the test.
443 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
444 for ac_dir in $PATH /usr/ccs/bin /usr/ucb /bin; do
445 test -z "$ac_dir" && ac_dir=.
446 if test -f $ac_dir/nm || test -f $ac_dir/nm$ac_exeext ; then
447 # Check to see if the nm accepts a BSD-compat flag.
448 # Adding the `sed 1q' prevents false positives on HP-UX, which says:
449 # nm: unknown option "B" ignored
450 if ($ac_dir/nm -B /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then
451 ac_cv_path_NM="$ac_dir/nm -B"
453 elif ($ac_dir/nm -p /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then
454 ac_cv_path_NM="$ac_dir/nm -p"
457 ac_cv_path_NM=${ac_cv_path_NM="$ac_dir/nm"} # keep the first match, but
458 continue # so that we can try to find one that supports BSD flags
463 test -z "$ac_cv_path_NM" && ac_cv_path_NM=nm
469 # AC_CHECK_LIBM - check for math library
470 AC_DEFUN(AC_CHECK_LIBM,
471 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
474 *-*-beos* | *-*-cygwin*)
475 # These system don't have libm
478 AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
479 AC_CHECK_LIB(m, main, LIBM="$LIBM -lm")
482 AC_CHECK_LIB(m, main, LIBM="-lm")
487 # AC_LIBLTDL_CONVENIENCE[(dir)] - sets LIBLTDL to the link flags for
488 # the libltdl convenience library and INCLTDL to the include flags for
489 # the libltdl header and adds --enable-ltdl-convenience to the
490 # configure arguments. Note that LIBLTDL and INCLTDL are not
491 # AC_SUBSTed, nor is AC_CONFIG_SUBDIRS called. If DIR is not
492 # provided, it is assumed to be `libltdl'. LIBLTDL will be prefixed
493 # with '${top_builddir}/' and INCLTDL will be prefixed with
494 # '${top_srcdir}/' (note the single quotes!). If your package is not
495 # flat and you're not using automake, define top_builddir and
496 # top_srcdir appropriately in the Makefiles.
497 AC_DEFUN(AC_LIBLTDL_CONVENIENCE, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl
498 case "$enable_ltdl_convenience" in
499 no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;
500 "") enable_ltdl_convenience=yes
501 ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;
503 LIBLTDL='${top_builddir}/'ifelse($#,1,[$1],['libltdl'])/libltdlc.la
504 INCLTDL='-I${top_srcdir}/'ifelse($#,1,[$1],['libltdl'])
507 # AC_LIBLTDL_INSTALLABLE[(dir)] - sets LIBLTDL to the link flags for
508 # the libltdl installable library and INCLTDL to the include flags for
509 # the libltdl header and adds --enable-ltdl-install to the configure
510 # arguments. Note that LIBLTDL and INCLTDL are not AC_SUBSTed, nor is
511 # AC_CONFIG_SUBDIRS called. If DIR is not provided and an installed
512 # libltdl is not found, it is assumed to be `libltdl'. LIBLTDL will
513 # be prefixed with '${top_builddir}/' and INCLTDL will be prefixed
514 # with '${top_srcdir}/' (note the single quotes!). If your package is
515 # not flat and you're not using automake, define top_builddir and
516 # top_srcdir appropriately in the Makefiles.
517 # In the future, this macro may have to be called after AC_PROG_LIBTOOL.
518 AC_DEFUN(AC_LIBLTDL_INSTALLABLE, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl
519 AC_CHECK_LIB(ltdl, main,
520 [test x"$enable_ltdl_install" != xyes && enable_ltdl_install=no],
521 [if test x"$enable_ltdl_install" = xno; then
522 AC_MSG_WARN([libltdl not installed, but installation disabled])
524 enable_ltdl_install=yes
527 if test x"$enable_ltdl_install" = x"yes"; then
528 ac_configure_args="$ac_configure_args --enable-ltdl-install"
529 LIBLTDL='${top_builddir}/'ifelse($#,1,[$1],['libltdl'])/libltdl.la
530 INCLTDL='-I${top_srcdir}/'ifelse($#,1,[$1],['libltdl'])
532 ac_configure_args="$ac_configure_args --enable-ltdl-install=no"
539 AC_DEFUN(AM_PROG_LIBTOOL, [indir([AC_PROG_LIBTOOL])])dnl
540 AC_DEFUN(AM_ENABLE_SHARED, [indir([AC_ENABLE_SHARED], $@)])dnl
541 AC_DEFUN(AM_ENABLE_STATIC, [indir([AC_ENABLE_STATIC], $@)])dnl
542 AC_DEFUN(AM_DISABLE_SHARED, [indir([AC_DISABLE_SHARED], $@)])dnl
543 AC_DEFUN(AM_DISABLE_STATIC, [indir([AC_DISABLE_STATIC], $@)])dnl
544 AC_DEFUN(AM_PROG_LD, [indir([AC_PROG_LD])])dnl
545 AC_DEFUN(AM_PROG_NM, [indir([AC_PROG_NM])])dnl
547 dnl This is just to silence aclocal about the macro not being used
548 ifelse([AC_DISABLE_FAST_INSTALL])dnl
553 # @defmac AC_PROG_CC_STDC
554 # @maindex PROG_CC_STDC
556 # If the C compiler in not in ANSI C mode by default, try to add an option
557 # to output variable @code{CC} to make it so. This macro tries various
558 # options that select ANSI C on some system or another. It considers the
559 # compiler to be in ANSI C mode if it handles function prototypes correctly.
561 # If you use this macro, you should check after calling it whether the C
562 # compiler has been set to accept ANSI C; if not, the shell variable
563 # @code{am_cv_prog_cc_stdc} is set to @samp{no}. If you wrote your source
564 # code in ANSI C, you can make an un-ANSIfied copy of it by using the
565 # program @code{ansi2knr}, which comes with Ghostscript.
568 AC_DEFUN(AM_PROG_CC_STDC,
569 [AC_REQUIRE([AC_PROG_CC])
570 AC_BEFORE([$0], [AC_C_INLINE])
571 AC_BEFORE([$0], [AC_C_CONST])
572 dnl Force this before AC_PROG_CPP. Some cpp's, eg on HPUX, require
573 dnl a magic option to avoid problems with ANSI preprocessor commands
575 dnl FIXME: can't do this because then AC_AIX won't work due to a
576 dnl circular dependency.
577 dnl AC_BEFORE([$0], [AC_PROG_CPP])
578 AC_MSG_CHECKING(for ${CC-cc} option to accept ANSI C)
579 AC_CACHE_VAL(am_cv_prog_cc_stdc,
580 [am_cv_prog_cc_stdc=no
582 # Don't try gcc -ansi; that turns off useful extensions and
583 # breaks some systems' header files.
585 # Ultrix and OSF/1 -std1
586 # HP-UX 10.20 and later -Ae
587 # HP-UX older versions -Aa -D_HPUX_SOURCE
588 # SVR4 -Xc -D__EXTENSIONS__
589 for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
591 CC="$ac_save_CC $ac_arg"
595 #include <sys/types.h>
596 #include <sys/stat.h>
597 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
598 struct buf { int x; };
599 FILE * (*rcsopen) (struct buf *, struct stat *, int);
600 static char *e (p, i)
606 static char *f (char * (*g) (char **, int), char **p, ...)
611 s = g (p, va_arg (v,int));
615 int test (int i, double x);
616 struct s1 {int (*f) (int a);};
617 struct s2 {int (*f) (double a);};
618 int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
622 return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
624 [am_cv_prog_cc_stdc="$ac_arg"; break])
628 if test -z "$am_cv_prog_cc_stdc"; then
629 AC_MSG_RESULT([none needed])
631 AC_MSG_RESULT($am_cv_prog_cc_stdc)
633 case "x$am_cv_prog_cc_stdc" in
635 *) CC="$CC $am_cv_prog_cc_stdc" ;;
639 dnl From Jim Meyering.
643 AC_DEFUN(AM_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL,
644 [AC_REQUIRE([AM_SYS_POSIX_TERMIOS])
645 AC_CACHE_CHECK([whether use of TIOCGWINSZ requires sys/ioctl.h],
646 am_cv_sys_tiocgwinsz_needs_sys_ioctl_h,
647 [am_cv_sys_tiocgwinsz_needs_sys_ioctl_h=no
649 gwinsz_in_termios_h=no
650 if test $am_cv_sys_posix_termios = yes; then
652 [#include <sys/types.h>
653 # include <termios.h>
657 ], gwinsz_in_termios_h=yes)
660 if test $gwinsz_in_termios_h = no; then
662 [#include <sys/types.h>
663 # include <sys/ioctl.h>
667 ], am_cv_sys_tiocgwinsz_needs_sys_ioctl_h=yes)
670 if test $am_cv_sys_tiocgwinsz_needs_sys_ioctl_h = yes; then
671 AC_DEFINE(GWINSZ_IN_SYS_IOCTL,1,
672 [Define if TIOCGWINSZ requires sys/ioctl.h])
676 dnl From Jim Meyering.
680 AC_DEFUN(AM_SYS_POSIX_TERMIOS,
681 [AC_CACHE_CHECK([POSIX termios], am_cv_sys_posix_termios,
682 [AC_TRY_LINK([#include <sys/types.h>
684 #include <termios.h>],
685 [/* SunOS 4.0.3 has termios.h but not the library calls. */
687 am_cv_sys_posix_termios=yes,
688 am_cv_sys_posix_termios=no)])
691 # From Ulrich Drepper.
695 AC_DEFUN(AM_TYPE_PTRDIFF_T,
696 [AC_CACHE_CHECK([for ptrdiff_t], am_cv_type_ptrdiff_t,
697 [AC_TRY_COMPILE([#include <stddef.h>], [ptrdiff_t p],
698 am_cv_type_ptrdiff_t=yes, am_cv_type_ptrdiff_t=no)])
699 if test $am_cv_type_ptrdiff_t = yes; then
700 AC_DEFINE(HAVE_PTRDIFF_T,1,[Define if system has ptrdiff_t type])