1 # gettext.m4 serial 60 (gettext-0.17)
2 dnl Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 dnl 2004, 2005, 2006, 2007, 2009 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 file can can be used in projects which are not available under
9 dnl the GNU General Public License or the GNU Library General Public
10 dnl License but which still want to provide support for the GNU gettext
12 dnl Please note that the actual code of the GNU gettext library is covered
13 dnl by the GNU Library General Public License, and the rest of the GNU
14 dnl gettext package package is covered by the GNU General Public License.
15 dnl They are *not* in the public domain.
18 dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
19 dnl Bruno Haible <haible@clisp.cons.org>, 2000-2006.
21 dnl Macro to add for using GNU gettext.
23 dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
24 dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
25 dnl default (if it is not specified or empty) is 'no-libtool'.
26 dnl INTLSYMBOL should be 'external' for packages with no intl directory,
27 dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
28 dnl If INTLSYMBOL is 'use-libtool', then a libtool library
29 dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
30 dnl depending on --{enable,disable}-{shared,static} and on the presence of
31 dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
32 dnl $(top_builddir)/intl/libintl.a will be created.
33 dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
34 dnl implementations (in libc or libintl) without the ngettext() function
35 dnl will be ignored. If NEEDSYMBOL is specified and is
36 dnl 'need-formatstring-macros', then GNU gettext implementations that don't
37 dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
38 dnl INTLDIR is used to find the intl libraries. If empty,
39 dnl the value `$(top_builddir)/intl/' is used.
41 dnl The result of the configuration is one of three cases:
42 dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
44 dnl Catalog format: GNU --> install in $(datadir)
45 dnl Catalog extension: .mo after installation, .gmo in source tree
46 dnl 2) GNU gettext has been found in the system's C library.
47 dnl Catalog format: GNU --> install in $(datadir)
48 dnl Catalog extension: .mo after installation, .gmo in source tree
49 dnl 3) No internationalization, always use English msgid.
50 dnl Catalog format: none
51 dnl Catalog extension: none
52 dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
53 dnl The use of .gmo is historical (it was needed to avoid overwriting the
54 dnl GNU format catalogs when building on a platform with an X/Open gettext),
55 dnl but we keep it in order not to force irrelevant filename changes on the
58 AC_DEFUN([AM_GNU_GETTEXT],
60 dnl Argument checking.
61 ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
62 [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
64 ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
65 [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
67 define([gt_included_intl],
68 ifelse([$1], [external],
69 ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]),
71 define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
73 AM_GNU_GETTEXT_NEED([$2])
75 AC_REQUIRE([AM_PO_SUBDIRS])dnl
76 ifelse(gt_included_intl, yes, [
77 AC_REQUIRE([AM_INTL_SUBDIR])dnl
80 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
81 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
82 AC_REQUIRE([AC_LIB_RPATH])
84 dnl Sometimes libintl requires libiconv, so first search for libiconv.
85 dnl Ideally we would do this search only after the
86 dnl if test "$USE_NLS" = "yes"; then
87 dnl if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
88 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
89 dnl the configure script would need to contain the same shell code
90 dnl again, outside any 'if'. There are two solutions:
91 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
92 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
93 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
94 dnl documented, we avoid it.
95 ifelse(gt_included_intl, yes, , [
96 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
99 dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
105 ifelse(gt_included_intl, yes, [
106 BUILD_INCLUDED_LIBINTL=no
107 USE_INCLUDED_LIBINTL=no
113 dnl Add a version number to the cache macros.
114 case " $gt_needs " in
115 *" need-formatstring-macros "*) gt_api_version=3 ;;
116 *" need-ngettext "*) gt_api_version=2 ;;
117 *) gt_api_version=1 ;;
119 gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
120 gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
122 dnl If we use NLS figure out what method
123 if test "$USE_NLS" = "yes"; then
124 gt_use_preinstalled_gnugettext=no
125 ifelse(gt_included_intl, yes, [
126 AC_MSG_CHECKING([whether included gettext is requested])
127 AC_ARG_WITH(included-gettext,
128 [ --with-included-gettext use the GNU gettext library included here],
129 nls_cv_force_use_gnu_gettext=$withval,
130 nls_cv_force_use_gnu_gettext=no)
131 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
133 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
134 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
136 dnl User does not insist on using GNU NLS library. Figure out what
137 dnl to use. If GNU gettext is available we use this. Else we have
138 dnl to fall back to GNU NLS library.
140 if test $gt_api_version -ge 3; then
141 gt_revision_test_code='
142 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
143 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
146 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
150 gt_revision_test_code=
152 if test $gt_api_version -ge 2; then
153 gt_expression_test_code=' + * ngettext ("", "", 0)'
155 gt_expression_test_code=
158 AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
159 [AC_TRY_LINK([#include <libintl.h>
160 $gt_revision_test_code
161 extern int _nl_msg_cat_cntr;
162 extern int *_nl_domain_bindings;],
163 [bindtextdomain ("", "");
164 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings],
165 [eval "$gt_func_gnugettext_libc=yes"],
166 [eval "$gt_func_gnugettext_libc=no"])])
168 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
169 dnl Sometimes libintl requires libiconv, so first search for libiconv.
170 ifelse(gt_included_intl, yes, , [
173 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
174 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
175 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
176 dnl even if libiconv doesn't exist.
177 AC_LIB_LINKFLAGS_BODY([intl])
178 AC_CACHE_CHECK([for GNU gettext in libintl],
179 [$gt_func_gnugettext_libintl],
180 [gt_save_CPPFLAGS="$CPPFLAGS"
181 CPPFLAGS="$CPPFLAGS $INCINTL"
183 LIBS="$LIBS $LIBINTL"
184 dnl Now see whether libintl exists and does not depend on libiconv.
185 AC_TRY_LINK([#include <libintl.h>
186 $gt_revision_test_code
187 extern int _nl_msg_cat_cntr;
192 const char *_nl_expand_alias (const char *);],
193 [bindtextdomain ("", "");
194 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
195 [eval "$gt_func_gnugettext_libintl=yes"],
196 [eval "$gt_func_gnugettext_libintl=no"])
197 dnl Now see whether libintl exists and depends on libiconv.
198 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
199 LIBS="$LIBS $LIBICONV"
200 AC_TRY_LINK([#include <libintl.h>
201 $gt_revision_test_code
202 extern int _nl_msg_cat_cntr;
207 const char *_nl_expand_alias (const char *);],
208 [bindtextdomain ("", "");
209 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
210 [LIBINTL="$LIBINTL $LIBICONV"
211 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
212 eval "$gt_func_gnugettext_libintl=yes"
215 CPPFLAGS="$gt_save_CPPFLAGS"
216 LIBS="$gt_save_LIBS"])
219 dnl If an already present or preinstalled GNU gettext() is found,
220 dnl use it. But if this macro is used in GNU gettext, and GNU
221 dnl gettext is already preinstalled in libintl, we update this
222 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
223 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
224 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
225 && test "$PACKAGE" != gettext-runtime \
226 && test "$PACKAGE" != gettext-tools; }; then
227 gt_use_preinstalled_gnugettext=yes
229 dnl Reset the values set by searching for libintl.
235 ifelse(gt_included_intl, yes, [
236 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
237 dnl GNU gettext is not found in the C library.
238 dnl Fall back on included GNU gettext library.
239 nls_cv_use_gnu_gettext=yes
243 if test "$nls_cv_use_gnu_gettext" = "yes"; then
244 dnl Mark actions used to generate GNU NLS library.
245 BUILD_INCLUDED_LIBINTL=yes
246 USE_INCLUDED_LIBINTL=yes
247 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
248 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
249 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
253 if test "$gt_use_preinstalled_gnugettext" = "yes" \
254 || test "$nls_cv_use_gnu_gettext" = "yes"; then
255 dnl Mark actions to use GNU gettext tools.
260 if test -n "$INTL_MACOSX_LIBS"; then
261 if test "$gt_use_preinstalled_gnugettext" = "yes" \
262 || test "$nls_cv_use_gnu_gettext" = "yes"; then
263 dnl Some extra flags are needed during linking.
264 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
265 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
269 if test "$gt_use_preinstalled_gnugettext" = "yes" \
270 || test "$nls_cv_use_gnu_gettext" = "yes"; then
271 AC_DEFINE(ENABLE_NLS, 1,
272 [Define to 1 if translation of program messages to the user's native language
279 AC_MSG_CHECKING([whether to use NLS])
280 AC_MSG_RESULT([$USE_NLS])
281 if test "$USE_NLS" = "yes"; then
282 AC_MSG_CHECKING([where the gettext function comes from])
283 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
284 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
285 gt_source="external libintl"
290 gt_source="included intl directory"
292 AC_MSG_RESULT([$gt_source])
295 if test "$USE_NLS" = "yes"; then
297 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
298 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
299 AC_MSG_CHECKING([how to link with libintl])
300 AC_MSG_RESULT([$LIBINTL])
301 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
304 dnl For backward compatibility. Some packages may be using this.
305 AC_DEFINE(HAVE_GETTEXT, 1,
306 [Define if the GNU gettext() function is already present or preinstalled.])
307 AC_DEFINE(HAVE_DCGETTEXT, 1,
308 [Define if the GNU dcgettext() function is already present or preinstalled.])
311 dnl We need to process the po/ directory.
315 ifelse(gt_included_intl, yes, [
316 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
317 dnl to 'yes' because some of the testsuite requires it.
318 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
319 BUILD_INCLUDED_LIBINTL=yes
322 dnl Make all variables we use known to autoconf.
323 AC_SUBST(BUILD_INCLUDED_LIBINTL)
324 AC_SUBST(USE_INCLUDED_LIBINTL)
327 dnl For backward compatibility. Some configure.ins may be using this.
331 dnl For backward compatibility. Some Makefiles may be using this.
333 AC_SUBST(DATADIRNAME)
335 dnl For backward compatibility. Some Makefiles may be using this.
339 dnl For backward compatibility. Some Makefiles may be using this.
343 dnl For backward compatibility. Some Makefiles may be using this.
345 if test "$USE_INCLUDED_LIBINTL" = yes; then
346 INTLOBJS="\$(GETTOBJS)"
350 dnl Enable libtool support if the surrounding package wishes it.
351 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
352 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
355 dnl For backward compatibility. Some Makefiles may be using this.
359 dnl Make all documented variables known to autoconf.
366 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
367 m4_define([gt_NEEDS_INIT],
369 m4_divert_text([DEFAULTS], [gt_needs=])
370 m4_define([gt_NEEDS_INIT], [])
374 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
375 AC_DEFUN([AM_GNU_GETTEXT_NEED],
377 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
381 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
382 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])