1 # gettext.m4 serial 20 (gettext-0.12)
2 dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
3 dnl This file is free software, distributed under the terms of the GNU
4 dnl General Public License. As a special exception to the GNU General
5 dnl Public License, this file may be distributed as part of a program
6 dnl that contains a configuration script generated by Autoconf, under
7 dnl the same distribution terms as the rest of that program.
9 dnl This file can can be used in projects which are not available under
10 dnl the GNU General Public License or the GNU Library General Public
11 dnl License but which still want to provide support for the GNU gettext
13 dnl Please note that the actual code of the GNU gettext library is covered
14 dnl by the GNU Library General Public License, and the rest of the GNU
15 dnl gettext package package is covered by the GNU General Public License.
16 dnl They are *not* in the public domain.
19 dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
20 dnl Bruno Haible <haible@clisp.cons.org>, 2000-2003.
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 "$gt_cv_func_gnugettext_libc" != "yes"; then
84 dnl tests. But if configure.ac invokes AM_ICONV after AM_GNU_GETTEXT
85 dnl the configure script would need to contain the same shell code
86 dnl again, outside any 'if'. There are two solutions:
87 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
88 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
89 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
90 dnl documented, we avoid it.
91 ifelse(gt_included_intl, yes, , [
92 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
98 ifelse(gt_included_intl, yes, [
99 BUILD_INCLUDED_LIBINTL=no
100 USE_INCLUDED_LIBINTL=no
106 dnl If we use NLS figure out what method
107 if test "$USE_NLS" = "yes"; then
108 gt_use_preinstalled_gnugettext=no
109 ifelse(gt_included_intl, yes, [
110 AC_MSG_CHECKING([whether included gettext is requested])
111 AC_ARG_WITH(included-gettext,
112 [ --with-included-gettext use the GNU gettext library included here],
113 nls_cv_force_use_gnu_gettext=$withval,
114 nls_cv_force_use_gnu_gettext=no)
115 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
117 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
118 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
120 dnl User does not insist on using GNU NLS library. Figure out what
121 dnl to use. If GNU gettext is available we use this. Else we have
122 dnl to fall back to GNU NLS library.
124 dnl Add a version number to the cache macros.
125 define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
126 define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
127 define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
129 AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
130 [AC_TRY_LINK([#include <libintl.h>
131 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
132 extern int _nl_msg_cat_cntr;
133 extern int *_nl_domain_bindings;
134 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings)
136 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
138 ]ifelse([$2], [need-formatstring-macros],
139 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
140 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
143 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
146 [bindtextdomain ("", "");
147 return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + __GNU_GETTEXT_SYMBOL_EXPRESSION],
148 gt_cv_func_gnugettext_libc=yes,
149 gt_cv_func_gnugettext_libc=no)])
151 if test "$gt_cv_func_gnugettext_libc" != "yes"; then
152 dnl Sometimes libintl requires libiconv, so first search for libiconv.
153 ifelse(gt_included_intl, yes, , [
156 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
157 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
158 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
159 dnl even if libiconv doesn't exist.
160 AC_LIB_LINKFLAGS_BODY([intl])
161 AC_CACHE_CHECK([for GNU gettext in libintl],
162 gt_cv_func_gnugettext_libintl,
163 [gt_save_CPPFLAGS="$CPPFLAGS"
164 CPPFLAGS="$CPPFLAGS $INCINTL"
166 LIBS="$LIBS $LIBINTL"
167 dnl Now see whether libintl exists and does not depend on libiconv.
168 AC_TRY_LINK([#include <libintl.h>
169 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
170 extern int _nl_msg_cat_cntr;
175 const char *_nl_expand_alias ();
176 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (0))
178 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
180 ]ifelse([$2], [need-formatstring-macros],
181 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
182 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
185 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
188 [bindtextdomain ("", "");
189 return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + __GNU_GETTEXT_SYMBOL_EXPRESSION],
190 gt_cv_func_gnugettext_libintl=yes,
191 gt_cv_func_gnugettext_libintl=no)
192 dnl Now see whether libintl exists and depends on libiconv.
193 if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
194 LIBS="$LIBS $LIBICONV"
195 AC_TRY_LINK([#include <libintl.h>
196 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
197 extern int _nl_msg_cat_cntr;
202 const char *_nl_expand_alias ();
203 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (0))
205 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
207 ]ifelse([$2], [need-formatstring-macros],
208 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
209 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
212 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
215 [bindtextdomain ("", "");
216 return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + __GNU_GETTEXT_SYMBOL_EXPRESSION],
217 [LIBINTL="$LIBINTL $LIBICONV"
218 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
219 gt_cv_func_gnugettext_libintl=yes
222 CPPFLAGS="$gt_save_CPPFLAGS"
223 LIBS="$gt_save_LIBS"])
226 dnl If an already present or preinstalled GNU gettext() is found,
227 dnl use it. But if this macro is used in GNU gettext, and GNU
228 dnl gettext is already preinstalled in libintl, we update this
229 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
230 if test "$gt_cv_func_gnugettext_libc" = "yes" \
231 || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
232 && test "$PACKAGE" != gettext-runtime \
233 && test "$PACKAGE" != gettext-tools; }; then
234 gt_use_preinstalled_gnugettext=yes
236 dnl Reset the values set by searching for libintl.
242 ifelse(gt_included_intl, yes, [
243 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
244 dnl GNU gettext is not found in the C library.
245 dnl Fall back on included GNU gettext library.
246 nls_cv_use_gnu_gettext=yes
250 if test "$nls_cv_use_gnu_gettext" = "yes"; then
251 dnl Mark actions used to generate GNU NLS library.
252 BUILD_INCLUDED_LIBINTL=yes
253 USE_INCLUDED_LIBINTL=yes
254 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV"
255 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV"
256 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
259 if test "$gt_use_preinstalled_gnugettext" = "yes" \
260 || test "$nls_cv_use_gnu_gettext" = "yes"; then
261 dnl Mark actions to use GNU gettext tools.
266 if test "$gt_use_preinstalled_gnugettext" = "yes" \
267 || test "$nls_cv_use_gnu_gettext" = "yes"; then
268 AC_DEFINE(ENABLE_NLS, 1,
269 [Define to 1 if translation of program messages to the user's native language
276 AC_MSG_CHECKING([whether to use NLS])
277 AC_MSG_RESULT([$USE_NLS])
278 if test "$USE_NLS" = "yes"; then
279 AC_MSG_CHECKING([where the gettext function comes from])
280 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
281 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
282 gt_source="external libintl"
287 gt_source="included intl directory"
289 AC_MSG_RESULT([$gt_source])
292 if test "$USE_NLS" = "yes"; then
294 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
295 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
296 AC_MSG_CHECKING([how to link with libintl])
297 AC_MSG_RESULT([$LIBINTL])
298 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
301 dnl For backward compatibility. Some packages may be using this.
302 AC_DEFINE(HAVE_GETTEXT, 1,
303 [Define if the GNU gettext() function is already present or preinstalled.])
304 AC_DEFINE(HAVE_DCGETTEXT, 1,
305 [Define if the GNU dcgettext() function is already present or preinstalled.])
308 dnl We need to process the po/ directory.
312 ifelse(gt_included_intl, yes, [
313 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
314 dnl to 'yes' because some of the testsuite requires it.
315 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
316 BUILD_INCLUDED_LIBINTL=yes
319 dnl Make all variables we use known to autoconf.
320 AC_SUBST(BUILD_INCLUDED_LIBINTL)
321 AC_SUBST(USE_INCLUDED_LIBINTL)
324 dnl For backward compatibility. Some configure.acs may be using this.
328 dnl For backward compatibility. Some Makefiles may be using this.
330 AC_SUBST(DATADIRNAME)
332 dnl For backward compatibility. Some Makefiles may be using this.
336 dnl For backward compatibility. Some Makefiles may be using this.
340 dnl For backward compatibility. Some Makefiles may be using this.
341 if test "$USE_INCLUDED_LIBINTL" = yes; then
342 INTLOBJS="\$(GETTOBJS)"
346 dnl Enable libtool support if the surrounding package wishes it.
347 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
348 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
351 dnl For backward compatibility. Some Makefiles may be using this.
355 dnl Make all documented variables known to autoconf.
362 dnl Checks for all prerequisites of the intl subdirectory,
363 dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
364 dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
365 AC_DEFUN([AM_INTL_SUBDIR],
367 AC_REQUIRE([AC_PROG_INSTALL])dnl
368 AC_REQUIRE([AM_MKINSTALLDIRS])dnl
369 AC_REQUIRE([AC_PROG_CC])dnl
370 AC_REQUIRE([AC_CANONICAL_HOST])dnl
371 AC_REQUIRE([AC_PROG_RANLIB])dnl
372 AC_REQUIRE([AC_ISC_POSIX])dnl
373 AC_REQUIRE([AC_HEADER_STDC])dnl
374 AC_REQUIRE([AC_C_CONST])dnl
375 AC_REQUIRE([AC_C_INLINE])dnl
376 AC_REQUIRE([AC_TYPE_OFF_T])dnl
377 AC_REQUIRE([AC_TYPE_SIZE_T])dnl
378 AC_REQUIRE([AC_FUNC_ALLOCA])dnl
379 AC_REQUIRE([AC_FUNC_MMAP])dnl
380 AC_REQUIRE([jm_GLIBC21])dnl
381 AC_REQUIRE([gt_INTDIV0])dnl
382 AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])dnl
383 AC_REQUIRE([gt_HEADER_INTTYPES_H])dnl
384 AC_REQUIRE([gt_INTTYPES_PRI])dnl
386 AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
387 stdlib.h string.h unistd.h sys/param.h])
388 AC_CHECK_FUNCS([feof_unlocked fgets_unlocked getc_unlocked getcwd getegid \
389 geteuid getgid getuid mempcpy munmap putenv setenv setlocale stpcpy \
390 strcasecmp strdup strtoul tsearch __argz_count __argz_stringify __argz_next \
395 if test $ac_cv_header_locale_h = yes; then
399 dnl intl/plural.c is generated from intl/plural.y. It requires bison,
400 dnl because plural.y uses bison specific features. It requires at least
401 dnl bison-1.26 because earlier versions generate a plural.c that doesn't
403 dnl bison is only needed for the maintainer (who touches plural.y). But in
404 dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
405 dnl the rule in general Makefile. Now, some people carelessly touch the
406 dnl files or have a broken "make" program, hence the plural.c rule will
407 dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
408 dnl present or too old.
409 AC_CHECK_PROGS([INTLBISON], [bison])
410 if test -z "$INTLBISON"; then
413 dnl Found it, now check the version.
414 AC_MSG_CHECKING([version of bison])
415 changequote(<<,>>)dnl
416 ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
417 case $ac_prog_version in
418 '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
419 1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
421 ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
422 *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
424 AC_MSG_RESULT([$ac_prog_version])
426 if test $ac_verc_fail = yes; then
432 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
433 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])