1 # gettext.m4 serial 58 (gettext-0.16)
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>, 2000-2006.
20 dnl Macro to add for using GNU gettext.
22 dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
23 dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
24 dnl default (if it is not specified or empty) is 'no-libtool'.
25 dnl INTLSYMBOL should be 'external' for packages with no intl directory,
26 dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
27 dnl If INTLSYMBOL is 'use-libtool', then a libtool library
28 dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
29 dnl depending on --{enable,disable}-{shared,static} and on the presence of
30 dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
31 dnl $(top_builddir)/intl/libintl.a will be created.
32 dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
33 dnl implementations (in libc or libintl) without the ngettext() function
34 dnl will be ignored. If NEEDSYMBOL is specified and is
35 dnl 'need-formatstring-macros', then GNU gettext implementations that don't
36 dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
37 dnl INTLDIR is used to find the intl libraries. If empty,
38 dnl the value `$(top_builddir)/intl/' is used.
40 dnl The result of the configuration is one of three cases:
41 dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
43 dnl Catalog format: GNU --> install in $(datadir)
44 dnl Catalog extension: .mo after installation, .gmo in source tree
45 dnl 2) GNU gettext has been found in the system's C library.
46 dnl Catalog format: GNU --> install in $(datadir)
47 dnl Catalog extension: .mo after installation, .gmo in source tree
48 dnl 3) No internationalization, always use English msgid.
49 dnl Catalog format: none
50 dnl Catalog extension: none
51 dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
52 dnl The use of .gmo is historical (it was needed to avoid overwriting the
53 dnl GNU format catalogs when building on a platform with an X/Open gettext),
54 dnl but we keep it in order not to force irrelevant filename changes on the
57 AC_DEFUN([AM_GNU_GETTEXT],
59 dnl Argument checking.
60 ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
61 [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
63 ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
64 [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
66 define([gt_included_intl],
67 ifelse([$1], [external],
68 ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]),
70 define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
72 AM_GNU_GETTEXT_NEED([$2])
74 AC_REQUIRE([AM_PO_SUBDIRS])dnl
75 ifelse(gt_included_intl, yes, [
76 AC_REQUIRE([AM_INTL_SUBDIR])dnl
79 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
80 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
81 AC_REQUIRE([AC_LIB_RPATH])
83 dnl Sometimes libintl requires libiconv, so first search for libiconv.
84 dnl Ideally we would do this search only after the
85 dnl if test "$USE_NLS" = "yes"; then
86 dnl if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
87 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
88 dnl the configure script would need to contain the same shell code
89 dnl again, outside any 'if'. There are two solutions:
90 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
91 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
92 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
93 dnl documented, we avoid it.
94 ifelse(gt_included_intl, yes, , [
95 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
98 dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
104 ifelse(gt_included_intl, yes, [
105 BUILD_INCLUDED_LIBINTL=no
106 USE_INCLUDED_LIBINTL=no
112 dnl Add a version number to the cache macros.
113 case " $gt_needs " in
114 *" need-formatstring-macros "*) gt_api_version=3 ;;
115 *" need-ngettext "*) gt_api_version=2 ;;
116 *) gt_api_version=1 ;;
118 gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
119 gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
121 dnl If we use NLS figure out what method
122 if test "$USE_NLS" = "yes"; then
123 gt_use_preinstalled_gnugettext=no
124 ifelse(gt_included_intl, yes, [
125 AC_MSG_CHECKING([whether included gettext is requested])
126 AC_ARG_WITH(included-gettext,
127 [ --with-included-gettext use the GNU gettext library included here],
128 nls_cv_force_use_gnu_gettext=$withval,
129 nls_cv_force_use_gnu_gettext=no)
130 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
132 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
133 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
135 dnl User does not insist on using GNU NLS library. Figure out what
136 dnl to use. If GNU gettext is available we use this. Else we have
137 dnl to fall back to GNU NLS library.
139 if test $gt_api_version -ge 3; then
140 gt_revision_test_code='[[
141 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
142 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
144 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
147 gt_revision_test_code=
149 if test $gt_api_version -ge 2; then
150 gt_expression_test_code=' + * ngettext ("", "", 0)'
152 gt_expression_test_code=
155 AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
156 [AC_TRY_LINK([#include <libintl.h>
157 $gt_revision_test_code
158 extern int _nl_msg_cat_cntr;
159 extern int *_nl_domain_bindings;],
160 [bindtextdomain ("", "");
161 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings],
162 [eval "$gt_func_gnugettext_libc=yes"],
163 [eval "$gt_func_gnugettext_libc=no"])])
165 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
166 dnl Sometimes libintl requires libiconv, so first search for libiconv.
167 ifelse(gt_included_intl, yes, , [
170 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
171 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
172 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
173 dnl even if libiconv doesn't exist.
174 AC_LIB_LINKFLAGS_BODY([intl])
175 AC_CACHE_CHECK([for GNU gettext in libintl],
176 [$gt_func_gnugettext_libintl],
177 [gt_save_CPPFLAGS="$CPPFLAGS"
178 CPPFLAGS="$CPPFLAGS $INCINTL"
180 LIBS="$LIBS $LIBINTL"
181 dnl Now see whether libintl exists and does not depend on libiconv.
182 AC_TRY_LINK([#include <libintl.h>
183 $gt_revision_test_code
184 extern int _nl_msg_cat_cntr;
189 const char *_nl_expand_alias (const char *);],
190 [bindtextdomain ("", "");
191 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
192 [eval "$gt_func_gnugettext_libintl=yes"],
193 [eval "$gt_func_gnugettext_libintl=no"])
194 dnl Now see whether libintl exists and depends on libiconv.
195 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
196 LIBS="$LIBS $LIBICONV"
197 AC_TRY_LINK([#include <libintl.h>
198 $gt_revision_test_code
199 extern int _nl_msg_cat_cntr;
204 const char *_nl_expand_alias (const char *);],
205 [bindtextdomain ("", "");
206 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
207 [LIBINTL="$LIBINTL $LIBICONV"
208 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
209 eval "$gt_func_gnugettext_libintl=yes"
212 CPPFLAGS="$gt_save_CPPFLAGS"
213 LIBS="$gt_save_LIBS"])
216 dnl If an already present or preinstalled GNU gettext() is found,
217 dnl use it. But if this macro is used in GNU gettext, and GNU
218 dnl gettext is already preinstalled in libintl, we update this
219 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
220 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
221 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
222 && test "$PACKAGE" != gettext-runtime \
223 && test "$PACKAGE" != gettext-tools; }; then
224 gt_use_preinstalled_gnugettext=yes
226 dnl Reset the values set by searching for libintl.
232 ifelse(gt_included_intl, yes, [
233 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
234 dnl GNU gettext is not found in the C library.
235 dnl Fall back on included GNU gettext library.
236 nls_cv_use_gnu_gettext=yes
240 if test "$nls_cv_use_gnu_gettext" = "yes"; then
241 dnl Mark actions used to generate GNU NLS library.
242 BUILD_INCLUDED_LIBINTL=yes
243 USE_INCLUDED_LIBINTL=yes
244 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
245 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
246 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
250 if test "$gt_use_preinstalled_gnugettext" = "yes" \
251 || test "$nls_cv_use_gnu_gettext" = "yes"; then
252 dnl Mark actions to use GNU gettext tools.
257 if test -n "$INTL_MACOSX_LIBS"; then
258 if test "$gt_use_preinstalled_gnugettext" = "yes" \
259 || test "$nls_cv_use_gnu_gettext" = "yes"; then
260 dnl Some extra flags are needed during linking.
261 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
262 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
266 if test "$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 { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
282 gt_source="external libintl"
287 gt_source="included intl directory"
289 AC_MSG_RESULT([$gt_source])
292 if test "$USE_NLS" = "yes"; then
294 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
295 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
296 AC_MSG_CHECKING([how to link with libintl])
297 AC_MSG_RESULT([$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 "$PACKAGE" = gettext-tools; then
316 BUILD_INCLUDED_LIBINTL=yes
319 dnl Make all variables we use known to autoconf.
320 AC_SUBST(BUILD_INCLUDED_LIBINTL)
321 AC_SUBST(USE_INCLUDED_LIBINTL)
324 dnl For backward compatibility. Some configure.ins may be using this.
328 dnl For backward compatibility. Some Makefiles may be using this.
330 AC_SUBST(DATADIRNAME)
332 dnl For backward compatibility. Some Makefiles may be using this.
336 dnl For backward compatibility. Some Makefiles may be using this.
340 dnl For backward compatibility. Some Makefiles may be using this.
342 if test "$USE_INCLUDED_LIBINTL" = yes; then
343 INTLOBJS="\$(GETTOBJS)"
347 dnl Enable libtool support if the surrounding package wishes it.
348 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
349 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
352 dnl For backward compatibility. Some Makefiles may be using this.
356 dnl Make all documented variables known to autoconf.
363 dnl Checks for special options needed on MacOS X.
364 dnl Defines INTL_MACOSX_LIBS.
365 AC_DEFUN([gt_INTL_MACOSX],
367 dnl Check for API introduced in MacOS X 10.2.
368 AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
369 gt_cv_func_CFPreferencesCopyAppValue,
370 [gt_save_LIBS="$LIBS"
371 LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
372 AC_TRY_LINK([#include <CoreFoundation/CFPreferences.h>],
373 [CFPreferencesCopyAppValue(NULL, NULL)],
374 [gt_cv_func_CFPreferencesCopyAppValue=yes],
375 [gt_cv_func_CFPreferencesCopyAppValue=no])
376 LIBS="$gt_save_LIBS"])
377 if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
378 AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], 1,
379 [Define to 1 if you have the MacOS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
381 dnl Check for API introduced in MacOS X 10.3.
382 AC_CACHE_CHECK([for CFLocaleCopyCurrent], gt_cv_func_CFLocaleCopyCurrent,
383 [gt_save_LIBS="$LIBS"
384 LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
385 AC_TRY_LINK([#include <CoreFoundation/CFLocale.h>], [CFLocaleCopyCurrent();],
386 [gt_cv_func_CFLocaleCopyCurrent=yes],
387 [gt_cv_func_CFLocaleCopyCurrent=no])
388 LIBS="$gt_save_LIBS"])
389 if test $gt_cv_func_CFLocaleCopyCurrent = yes; then
390 AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], 1,
391 [Define to 1 if you have the MacOS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
394 if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then
395 INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
397 AC_SUBST([INTL_MACOSX_LIBS])
401 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
402 m4_define([gt_NEEDS_INIT],
404 m4_divert_text([DEFAULTS], [gt_needs=])
405 m4_define([gt_NEEDS_INIT], [])
409 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
410 AC_DEFUN([AM_GNU_GETTEXT_NEED],
412 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
416 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
417 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])