1 # gettext.m4 serial 53.1
2 dnl Copyright (C) 1995-2006 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 dnl This file can can be used in projects which are not available under
8 dnl the GNU General Public License or the GNU Library General Public
9 dnl License but which still want to provide support for the GNU gettext
11 dnl Please note that the actual code of the GNU gettext library is covered
12 dnl by the GNU Library General Public License, and the rest of the GNU
13 dnl gettext package package is covered by the GNU General Public License.
14 dnl They are *not* in the public domain.
17 dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
18 dnl Bruno Haible <haible@clisp.cons.org>, 2000-2005.
22 dnl Macro to add for using GNU gettext.
24 dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
25 dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
26 dnl default (if it is not specified or empty) is 'no-libtool'.
27 dnl INTLSYMBOL should be 'external' for packages with no intl directory,
28 dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
29 dnl If INTLSYMBOL is 'use-libtool', then a libtool library
30 dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
31 dnl depending on --{enable,disable}-{shared,static} and on the presence of
32 dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
33 dnl $(top_builddir)/intl/libintl.a will be created.
34 dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
35 dnl implementations (in libc or libintl) without the ngettext() function
36 dnl will be ignored. If NEEDSYMBOL is specified and is
37 dnl 'need-formatstring-macros', then GNU gettext implementations that don't
38 dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
39 dnl INTLDIR is used to find the intl libraries. If empty,
40 dnl the value `$(top_builddir)/intl/' is used.
42 dnl The result of the configuration is one of three cases:
43 dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
45 dnl Catalog format: GNU --> install in $(datadir)
46 dnl Catalog extension: .mo after installation, .gmo in source tree
47 dnl 2) GNU gettext has been found in the system's C library.
48 dnl Catalog format: GNU --> install in $(datadir)
49 dnl Catalog extension: .mo after installation, .gmo in source tree
50 dnl 3) No internationalization, always use English msgid.
51 dnl Catalog format: none
52 dnl Catalog extension: none
53 dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
54 dnl The use of .gmo is historical (it was needed to avoid overwriting the
55 dnl GNU format catalogs when building on a platform with an X/Open gettext),
56 dnl but we keep it in order not to force irrelevant filename changes on the
59 AC_DEFUN([AM_GNU_GETTEXT],
61 dnl Argument checking.
62 ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
63 [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
65 ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
66 [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
68 define([gt_included_intl], ifelse([$1], [external], [no], [yes]))
69 define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
71 AC_REQUIRE([AM_PO_SUBDIRS])dnl
72 ifelse(gt_included_intl, yes, [
73 AC_REQUIRE([AM_INTL_SUBDIR])dnl
76 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
77 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
78 AC_REQUIRE([AC_LIB_RPATH])
80 dnl Sometimes libintl requires libiconv, so first search for libiconv.
81 dnl Ideally we would do this search only after the
82 dnl if test "$USE_NLS" = "yes"; then
83 dnl if test "$gt_cv_func_gnugettext_libc" != "yes"; then
84 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
85 dnl the configure script would need to contain the same shell code
86 dnl again, outside any 'if'. There are two solutions:
87 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
88 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
89 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
90 dnl documented, we avoid it.
91 ifelse(gt_included_intl, yes, , [
92 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
95 dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
101 ifelse(gt_included_intl, yes, [
102 BUILD_INCLUDED_LIBINTL=no
103 USE_INCLUDED_LIBINTL=no
109 dnl If we use NLS figure out what method
110 if test "$USE_NLS" = "yes"; then
111 gt_use_preinstalled_gnugettext=no
112 ifelse(gt_included_intl, yes, [
113 AC_MSG_CHECKING([whether included gettext is requested])
114 AC_ARG_WITH(included-gettext,
115 [ --with-included-gettext use the GNU gettext library included here],
116 nls_cv_force_use_gnu_gettext=$withval,
117 nls_cv_force_use_gnu_gettext=no)
118 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
120 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
121 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
123 dnl User does not insist on using GNU NLS library. Figure out what
124 dnl to use. If GNU gettext is available we use this. Else we have
125 dnl to fall back to GNU NLS library.
127 dnl Add a version number to the cache macros.
128 define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
129 define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
130 define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
132 AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
133 [AC_TRY_LINK([#include <libintl.h>
134 ]ifelse([$2], [need-formatstring-macros],
135 [[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
136 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
138 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
139 ]], [])[extern int _nl_msg_cat_cntr;
140 extern int *_nl_domain_bindings;],
141 [bindtextdomain ("", "");
142 return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings],
143 gt_cv_func_gnugettext_libc=yes,
144 gt_cv_func_gnugettext_libc=no)])
146 if test "$gt_cv_func_gnugettext_libc" != "yes"; then
147 dnl Sometimes libintl requires libiconv, so first search for libiconv.
148 ifelse(gt_included_intl, yes, , [
151 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
152 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
153 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
154 dnl even if libiconv doesn't exist.
155 AC_LIB_LINKFLAGS_BODY([intl])
156 AC_CACHE_CHECK([for GNU gettext in libintl],
157 gt_cv_func_gnugettext_libintl,
158 [gt_save_CPPFLAGS="$CPPFLAGS"
159 CPPFLAGS="$CPPFLAGS $INCINTL"
161 LIBS="$LIBS $LIBINTL"
162 dnl Now see whether libintl exists and does not depend on libiconv.
163 AC_TRY_LINK([#include <libintl.h>
164 ]ifelse([$2], [need-formatstring-macros],
165 [[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
166 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
168 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
169 ]], [])[extern int _nl_msg_cat_cntr;
174 const char *_nl_expand_alias (const char *);],
175 [bindtextdomain ("", "");
176 return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
177 gt_cv_func_gnugettext_libintl=yes,
178 gt_cv_func_gnugettext_libintl=no)
179 dnl Now see whether libintl exists and depends on libiconv.
180 if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
181 LIBS="$LIBS $LIBICONV"
182 AC_TRY_LINK([#include <libintl.h>
183 ]ifelse([$2], [need-formatstring-macros],
184 [[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
185 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
187 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
188 ]], [])[extern int _nl_msg_cat_cntr;
193 const char *_nl_expand_alias (const char *);],
194 [bindtextdomain ("", "");
195 return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
196 [LIBINTL="$LIBINTL $LIBICONV"
197 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
198 gt_cv_func_gnugettext_libintl=yes
201 CPPFLAGS="$gt_save_CPPFLAGS"
202 LIBS="$gt_save_LIBS"])
205 dnl If an already present or preinstalled GNU gettext() is found,
206 dnl use it. But if this macro is used in GNU gettext, and GNU
207 dnl gettext is already preinstalled in libintl, we update this
208 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
209 if test "$gt_cv_func_gnugettext_libc" = "yes" \
210 || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
211 && test "$PACKAGE" != gettext-runtime \
212 && test "$PACKAGE" != gettext-tools; }; then
213 gt_use_preinstalled_gnugettext=yes
215 dnl Reset the values set by searching for libintl.
221 ifelse(gt_included_intl, yes, [
222 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
223 dnl GNU gettext is not found in the C library.
224 dnl Fall back on included GNU gettext library.
225 nls_cv_use_gnu_gettext=yes
229 if test "$nls_cv_use_gnu_gettext" = "yes"; then
230 dnl Mark actions used to generate GNU NLS library.
231 BUILD_INCLUDED_LIBINTL=yes
232 USE_INCLUDED_LIBINTL=yes
233 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
234 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
235 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
239 if test "$gt_use_preinstalled_gnugettext" = "yes" \
240 || test "$nls_cv_use_gnu_gettext" = "yes"; then
241 dnl Mark actions to use GNU gettext tools.
246 if test -n "$INTL_MACOSX_LIBS"; then
247 if test "$gt_use_preinstalled_gnugettext" = "yes" \
248 || test "$nls_cv_use_gnu_gettext" = "yes"; then
249 dnl Some extra flags are needed during linking.
250 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
251 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
255 if test "$gt_use_preinstalled_gnugettext" = "yes" \
256 || test "$nls_cv_use_gnu_gettext" = "yes"; then
257 AC_DEFINE(ENABLE_NLS, 1,
258 [Define to 1 if translation of program messages to the user's native language
265 AC_MSG_CHECKING([whether to use NLS])
266 AC_MSG_RESULT([$USE_NLS])
267 if test "$USE_NLS" = "yes"; then
268 AC_MSG_CHECKING([where the gettext function comes from])
269 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
270 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
271 gt_source="external libintl"
276 gt_source="included intl directory"
278 AC_MSG_RESULT([$gt_source])
281 if test "$USE_NLS" = "yes"; then
283 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
284 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
285 AC_MSG_CHECKING([how to link with libintl])
286 AC_MSG_RESULT([$LIBINTL])
287 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
290 dnl For backward compatibility. Some packages may be using this.
291 AC_DEFINE(HAVE_GETTEXT, 1,
292 [Define if the GNU gettext() function is already present or preinstalled.])
293 AC_DEFINE(HAVE_DCGETTEXT, 1,
294 [Define if the GNU dcgettext() function is already present or preinstalled.])
297 dnl We need to process the po/ directory.
301 ifelse(gt_included_intl, yes, [
302 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
303 dnl to 'yes' because some of the testsuite requires it.
304 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
305 BUILD_INCLUDED_LIBINTL=yes
308 dnl Make all variables we use known to autoconf.
309 AC_SUBST(BUILD_INCLUDED_LIBINTL)
310 AC_SUBST(USE_INCLUDED_LIBINTL)
313 dnl For backward compatibility. Some configure.ins may be using this.
317 dnl For backward compatibility. Some Makefiles may be using this.
319 AC_SUBST(DATADIRNAME)
321 dnl For backward compatibility. Some Makefiles may be using this.
325 dnl For backward compatibility. Some Makefiles may be using this.
329 dnl For backward compatibility. Some Makefiles may be using this.
331 if test "$USE_INCLUDED_LIBINTL" = yes; then
332 INTLOBJS="\$(GETTOBJS)"
336 dnl Enable libtool support if the surrounding package wishes it.
337 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
338 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
341 dnl For backward compatibility. Some Makefiles may be using this.
345 dnl Make all documented variables known to autoconf.
352 dnl Checks for all prerequisites of the intl subdirectory,
353 dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
354 dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
355 AC_DEFUN([AM_INTL_SUBDIR],
357 AC_REQUIRE([AC_PROG_INSTALL])dnl
358 AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake
359 AC_REQUIRE([AC_PROG_CC])dnl
360 AC_REQUIRE([AC_CANONICAL_HOST])dnl
361 AC_REQUIRE([gt_GLIBC2])dnl
362 AC_REQUIRE([AC_PROG_RANLIB])dnl
363 AC_REQUIRE([gl_VISIBILITY])dnl
364 AC_REQUIRE([gt_INTL_SUBDIR_CORE])dnl
365 AC_REQUIRE([bh_C_SIGNED])dnl
366 AC_REQUIRE([gl_AC_TYPE_LONG_LONG])dnl
367 AC_REQUIRE([gt_TYPE_LONGDOUBLE])dnl
368 AC_REQUIRE([gt_TYPE_WCHAR_T])dnl
369 AC_REQUIRE([gt_TYPE_WINT_T])dnl
370 AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
371 AC_REQUIRE([gt_TYPE_INTMAX_T])
372 AC_REQUIRE([gt_PRINTF_POSIX])
373 AC_REQUIRE([gl_GLIBC21])dnl
374 AC_REQUIRE([gl_XSIZE])dnl
375 AC_REQUIRE([gt_INTL_MACOSX])dnl
377 AC_CHECK_TYPE([ptrdiff_t], ,
378 [AC_DEFINE([ptrdiff_t], [long],
379 [Define as the type of the result of subtracting two pointers, if the system doesn't define it.])
381 AC_CHECK_HEADERS([stddef.h stdlib.h string.h])
382 AC_CHECK_FUNCS([asprintf fwprintf putenv setenv setlocale snprintf wcslen])
384 dnl Use the _snprintf function only if it is declared (because on NetBSD it
385 dnl is defined as a weak alias of snprintf; we prefer to use the latter).
386 gt_CHECK_DECL(_snprintf, [#include <stdio.h>])
387 gt_CHECK_DECL(_snwprintf, [#include <stdio.h>])
389 dnl Use the *_unlocked functions only if they are declared.
390 dnl (because some of them were defined without being declared in Solaris
391 dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built
392 dnl on Solaris 2.5.1 to run on Solaris 2.6).
393 dnl Don't use AC_CHECK_DECLS because it isn't supported in autoconf-2.13.
394 gt_CHECK_DECL(getc_unlocked, [#include <stdio.h>])
396 case $gt_cv_func_printf_posix in
397 *yes) HAVE_POSIX_PRINTF=1 ;;
398 *) HAVE_POSIX_PRINTF=0 ;;
400 AC_SUBST([HAVE_POSIX_PRINTF])
401 if test "$ac_cv_func_asprintf" = yes; then
406 AC_SUBST([HAVE_ASPRINTF])
407 if test "$ac_cv_func_snprintf" = yes; then
412 AC_SUBST([HAVE_SNPRINTF])
413 if test "$ac_cv_func_wprintf" = yes; then
418 AC_SUBST([HAVE_WPRINTF])
423 dnl Compilation on mingw and Cygwin needs special Makefile rules, because
424 dnl 1. when we install a shared library, we must arrange to export
425 dnl auxiliary pointer variables for every exported variable,
426 dnl 2. when we install a shared library and a static library simultaneously,
427 dnl the include file specifies __declspec(dllimport) and therefore we
428 dnl must arrange to define the auxiliary pointer variables for the
429 dnl exported variables _also_ in the static library.
430 if test "$enable_shared" = yes; then
432 cygwin*) is_woe32dll=yes ;;
438 WOE32DLL=$is_woe32dll
441 dnl Rename some macros and functions used for locking.
443 #define __libc_lock_t gl_lock_t
444 #define __libc_lock_define gl_lock_define
445 #define __libc_lock_define_initialized gl_lock_define_initialized
446 #define __libc_lock_init gl_lock_init
447 #define __libc_lock_lock gl_lock_lock
448 #define __libc_lock_unlock gl_lock_unlock
449 #define __libc_lock_recursive_t gl_recursive_lock_t
450 #define __libc_lock_define_recursive gl_recursive_lock_define
451 #define __libc_lock_define_initialized_recursive gl_recursive_lock_define_initialized
452 #define __libc_lock_init_recursive gl_recursive_lock_init
453 #define __libc_lock_lock_recursive gl_recursive_lock_lock
454 #define __libc_lock_unlock_recursive gl_recursive_lock_unlock
455 #define glthread_in_use libintl_thread_in_use
456 #define glthread_lock_init libintl_lock_init
457 #define glthread_lock_lock libintl_lock_lock
458 #define glthread_lock_unlock libintl_lock_unlock
459 #define glthread_lock_destroy libintl_lock_destroy
460 #define glthread_rwlock_init libintl_rwlock_init
461 #define glthread_rwlock_rdlock libintl_rwlock_rdlock
462 #define glthread_rwlock_wrlock libintl_rwlock_wrlock
463 #define glthread_rwlock_unlock libintl_rwlock_unlock
464 #define glthread_rwlock_destroy libintl_rwlock_destroy
465 #define glthread_recursive_lock_init libintl_recursive_lock_init
466 #define glthread_recursive_lock_lock libintl_recursive_lock_lock
467 #define glthread_recursive_lock_unlock libintl_recursive_lock_unlock
468 #define glthread_recursive_lock_destroy libintl_recursive_lock_destroy
469 #define glthread_once libintl_once
470 #define glthread_once_call libintl_once_call
471 #define glthread_once_singlethreaded libintl_once_singlethreaded
476 dnl Checks for the core files of the intl subdirectory:
483 dnl hash-string.h hash-string.c
485 dnl libgnuintl.h.in (except the *printf stuff)
490 dnl plural-exp.h plural-exp.c
492 dnl Used by libglocale.
493 AC_DEFUN([gt_INTL_SUBDIR_CORE],
495 AC_REQUIRE([AC_C_INLINE])dnl
496 AC_REQUIRE([AC_TYPE_SIZE_T])dnl
497 AC_REQUIRE([gl_AC_HEADER_STDINT_H])
498 AC_REQUIRE([AC_FUNC_ALLOCA])dnl
499 AC_REQUIRE([AC_FUNC_MMAP])dnl
500 AC_REQUIRE([gt_INTDIV0])dnl
501 AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])dnl
502 AC_REQUIRE([gt_INTTYPES_PRI])dnl
503 AC_REQUIRE([gl_LOCK])dnl
506 [int foo (int a) { a = __builtin_expect (a, 10); return a == 10 ? 0 : 1; }],
508 [AC_DEFINE([HAVE_BUILTIN_EXPECT], 1,
509 [Define to 1 if the compiler understands __builtin_expect.])])
511 AC_CHECK_HEADERS([argz.h inttypes.h limits.h unistd.h sys/param.h])
512 AC_CHECK_FUNCS([getcwd getegid geteuid getgid getuid mempcpy munmap \
513 stpcpy strcasecmp strdup strtoul tsearch argz_count argz_stringify \
514 argz_next __fsetlocking])
516 dnl Use the *_unlocked functions only if they are declared.
517 dnl (because some of them were defined without being declared in Solaris
518 dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built
519 dnl on Solaris 2.5.1 to run on Solaris 2.6).
520 dnl Don't use AC_CHECK_DECLS because it isn't supported in autoconf-2.13.
521 gt_CHECK_DECL(feof_unlocked, [#include <stdio.h>])
522 gt_CHECK_DECL(fgets_unlocked, [#include <stdio.h>])
526 dnl glibc >= 2.4 has a NL_LOCALE_NAME macro when _GNU_SOURCE is defined,
527 dnl and a _NL_LOCALE_NAME macro always.
528 AC_CACHE_CHECK([for NL_LOCALE_NAME macro], gt_cv_nl_locale_name,
529 [AC_TRY_LINK([#include <langinfo.h>
530 #include <locale.h>],
531 [char* cs = nl_langinfo(_NL_LOCALE_NAME(LC_MESSAGES));],
532 gt_cv_nl_locale_name=yes,
533 gt_cv_nl_locale_name=no)
535 if test $gt_cv_nl_locale_name = yes; then
536 AC_DEFINE(HAVE_NL_LOCALE_NAME, 1,
537 [Define if you have <langinfo.h> and it defines the NL_LOCALE_NAME macro if _GNU_SOURCE is defined.])
540 dnl intl/plural.c is generated from intl/plural.y. It requires bison,
541 dnl because plural.y uses bison specific features. It requires at least
542 dnl bison-1.26 because earlier versions generate a plural.c that doesn't
544 dnl bison is only needed for the maintainer (who touches plural.y). But in
545 dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
546 dnl the rule in general Makefile. Now, some people carelessly touch the
547 dnl files or have a broken "make" program, hence the plural.c rule will
548 dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
549 dnl present or too old.
550 AC_CHECK_PROGS([INTLBISON], [bison])
551 if test -z "$INTLBISON"; then
554 dnl Found it, now check the version.
555 AC_MSG_CHECKING([version of bison])
556 changequote(<<,>>)dnl
557 ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
558 case $ac_prog_version in
559 '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
560 1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
562 ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
563 *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
565 AC_MSG_RESULT([$ac_prog_version])
567 if test $ac_verc_fail = yes; then
573 dnl Checks for special options needed on MacOS X.
574 dnl Defines INTL_MACOSX_LIBS.
575 AC_DEFUN([gt_INTL_MACOSX],
577 dnl Check for API introduced in MacOS X 10.2.
578 AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
579 gt_cv_func_CFPreferencesCopyAppValue,
580 [gt_save_LIBS="$LIBS"
581 LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
582 AC_TRY_LINK([#include <CoreFoundation/CFPreferences.h>],
583 [CFPreferencesCopyAppValue(NULL, NULL)],
584 [gt_cv_func_CFPreferencesCopyAppValue=yes],
585 [gt_cv_func_CFPreferencesCopyAppValue=no])
586 LIBS="$gt_save_LIBS"])
587 if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
588 AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], 1,
589 [Define to 1 if you have the MacOS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
591 dnl Check for API introduced in MacOS X 10.3.
592 AC_CACHE_CHECK([for CFLocaleCopyCurrent], gt_cv_func_CFLocaleCopyCurrent,
593 [gt_save_LIBS="$LIBS"
594 LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
595 AC_TRY_LINK([#include <CoreFoundation/CFLocale.h>], [CFLocaleCopyCurrent();],
596 [gt_cv_func_CFLocaleCopyCurrent=yes],
597 [gt_cv_func_CFLocaleCopyCurrent=no])
598 LIBS="$gt_save_LIBS"])
599 if test $gt_cv_func_CFLocaleCopyCurrent = yes; then
600 AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], 1,
601 [Define to 1 if you have the MacOS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
604 if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then
605 INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
607 AC_SUBST([INTL_MACOSX_LIBS])
611 dnl gt_CHECK_DECL(FUNC, INCLUDES)
612 dnl Check whether a function is declared.
613 AC_DEFUN([gt_CHECK_DECL],
615 AC_CACHE_CHECK([whether $1 is declared], ac_cv_have_decl_$1,
616 [AC_TRY_COMPILE([$2], [
618 char *p = (char *) $1;
620 ], ac_cv_have_decl_$1=yes, ac_cv_have_decl_$1=no)])
621 if test $ac_cv_have_decl_$1 = yes; then
626 AC_DEFINE_UNQUOTED([HAVE_DECL_]translit($1, [a-z], [A-Z]), [$gt_value],
627 [Define to 1 if you have the declaration of `$1', and to 0 if you don't.])
631 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
632 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])