1 # gettext.m4 serial 66 (gettext-0.18.2)
2 dnl Copyright (C) 1995-2012 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, 2008-2010.
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(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old],
64 [AC_DIAGNOSE([obsolete], [Use of AM_GNU_GETTEXT without [external] argument is deprecated.])])
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],
69 ifelse([$1], [external],
70 ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]),
72 define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
74 AM_GNU_GETTEXT_NEED([$2])
76 AC_REQUIRE([AM_PO_SUBDIRS])dnl
77 ifelse(gt_included_intl, yes, [
78 AC_REQUIRE([AM_INTL_SUBDIR])dnl
81 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
82 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
83 AC_REQUIRE([AC_LIB_RPATH])
85 dnl Sometimes libintl requires libiconv, so first search for libiconv.
86 dnl Ideally we would do this search only after the
87 dnl if test "$USE_NLS" = "yes"; then
88 dnl if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
89 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
90 dnl the configure script would need to contain the same shell code
91 dnl again, outside any 'if'. There are two solutions:
92 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
93 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
94 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
95 dnl documented, we avoid it.
96 ifelse(gt_included_intl, yes, , [
97 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
100 dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation.
106 ifelse(gt_included_intl, yes, [
107 BUILD_INCLUDED_LIBINTL=no
108 USE_INCLUDED_LIBINTL=no
114 dnl Add a version number to the cache macros.
115 case " $gt_needs " in
116 *" need-formatstring-macros "*) gt_api_version=3 ;;
117 *" need-ngettext "*) gt_api_version=2 ;;
118 *) gt_api_version=1 ;;
120 gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
121 gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
123 dnl If we use NLS figure out what method
124 if test "$USE_NLS" = "yes"; then
125 gt_use_preinstalled_gnugettext=no
126 ifelse(gt_included_intl, yes, [
127 AC_MSG_CHECKING([whether included gettext is requested])
128 AC_ARG_WITH([included-gettext],
129 [ --with-included-gettext use the GNU gettext library included here],
130 nls_cv_force_use_gnu_gettext=$withval,
131 nls_cv_force_use_gnu_gettext=no)
132 AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext])
134 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
135 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
137 dnl User does not insist on using GNU NLS library. Figure out what
138 dnl to use. If GNU gettext is available we use this. Else we have
139 dnl to fall back to GNU NLS library.
141 if test $gt_api_version -ge 3; then
142 gt_revision_test_code='
143 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
144 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
147 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
151 gt_revision_test_code=
153 if test $gt_api_version -ge 2; then
154 gt_expression_test_code=' + * ngettext ("", "", 0)'
156 gt_expression_test_code=
159 AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
164 $gt_revision_test_code
165 extern int _nl_msg_cat_cntr;
166 extern int *_nl_domain_bindings;
169 bindtextdomain ("", "");
170 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings
172 [eval "$gt_func_gnugettext_libc=yes"],
173 [eval "$gt_func_gnugettext_libc=no"])])
175 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
176 dnl Sometimes libintl requires libiconv, so first search for libiconv.
177 ifelse(gt_included_intl, yes, , [
180 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
181 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
182 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
183 dnl even if libiconv doesn't exist.
184 AC_LIB_LINKFLAGS_BODY([intl])
185 AC_CACHE_CHECK([for GNU gettext in libintl],
186 [$gt_func_gnugettext_libintl],
187 [gt_save_CPPFLAGS="$CPPFLAGS"
188 CPPFLAGS="$CPPFLAGS $INCINTL"
190 LIBS="$LIBS $LIBINTL"
191 dnl Now see whether libintl exists and does not depend on libiconv.
196 $gt_revision_test_code
197 extern int _nl_msg_cat_cntr;
202 const char *_nl_expand_alias (const char *);
205 bindtextdomain ("", "");
206 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
208 [eval "$gt_func_gnugettext_libintl=yes"],
209 [eval "$gt_func_gnugettext_libintl=no"])
210 dnl Now see whether libintl exists and depends on libiconv.
211 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
212 LIBS="$LIBS $LIBICONV"
217 $gt_revision_test_code
218 extern int _nl_msg_cat_cntr;
223 const char *_nl_expand_alias (const char *);
226 bindtextdomain ("", "");
227 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
229 [LIBINTL="$LIBINTL $LIBICONV"
230 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
231 eval "$gt_func_gnugettext_libintl=yes"
234 CPPFLAGS="$gt_save_CPPFLAGS"
235 LIBS="$gt_save_LIBS"])
238 dnl If an already present or preinstalled GNU gettext() is found,
239 dnl use it. But if this macro is used in GNU gettext, and GNU
240 dnl gettext is already preinstalled in libintl, we update this
241 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
242 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
243 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
244 && test "$PACKAGE" != gettext-runtime \
245 && test "$PACKAGE" != gettext-tools; }; then
246 gt_use_preinstalled_gnugettext=yes
248 dnl Reset the values set by searching for libintl.
254 ifelse(gt_included_intl, yes, [
255 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
256 dnl GNU gettext is not found in the C library.
257 dnl Fall back on included GNU gettext library.
258 nls_cv_use_gnu_gettext=yes
262 if test "$nls_cv_use_gnu_gettext" = "yes"; then
263 dnl Mark actions used to generate GNU NLS library.
264 BUILD_INCLUDED_LIBINTL=yes
265 USE_INCLUDED_LIBINTL=yes
266 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
267 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
268 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
272 if test "$gt_use_preinstalled_gnugettext" = "yes" \
273 || test "$nls_cv_use_gnu_gettext" = "yes"; then
274 dnl Mark actions to use GNU gettext tools.
279 if test -n "$INTL_MACOSX_LIBS"; then
280 if test "$gt_use_preinstalled_gnugettext" = "yes" \
281 || test "$nls_cv_use_gnu_gettext" = "yes"; then
282 dnl Some extra flags are needed during linking.
283 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
284 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
288 if test "$gt_use_preinstalled_gnugettext" = "yes" \
289 || test "$nls_cv_use_gnu_gettext" = "yes"; then
290 AC_DEFINE([ENABLE_NLS], [1],
291 [Define to 1 if translation of program messages to the user's native language
298 AC_MSG_CHECKING([whether to use NLS])
299 AC_MSG_RESULT([$USE_NLS])
300 if test "$USE_NLS" = "yes"; then
301 AC_MSG_CHECKING([where the gettext function comes from])
302 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
303 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
304 gt_source="external libintl"
309 gt_source="included intl directory"
311 AC_MSG_RESULT([$gt_source])
314 if test "$USE_NLS" = "yes"; then
316 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
317 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
318 AC_MSG_CHECKING([how to link with libintl])
319 AC_MSG_RESULT([$LIBINTL])
320 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
323 dnl For backward compatibility. Some packages may be using this.
324 AC_DEFINE([HAVE_GETTEXT], [1],
325 [Define if the GNU gettext() function is already present or preinstalled.])
326 AC_DEFINE([HAVE_DCGETTEXT], [1],
327 [Define if the GNU dcgettext() function is already present or preinstalled.])
330 dnl We need to process the po/ directory.
334 ifelse(gt_included_intl, yes, [
335 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
336 dnl to 'yes' because some of the testsuite requires it.
337 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
338 BUILD_INCLUDED_LIBINTL=yes
341 dnl Make all variables we use known to autoconf.
342 AC_SUBST([BUILD_INCLUDED_LIBINTL])
343 AC_SUBST([USE_INCLUDED_LIBINTL])
344 AC_SUBST([CATOBJEXT])
346 dnl For backward compatibility. Some configure.ins may be using this.
350 dnl For backward compatibility. Some Makefiles may be using this.
352 AC_SUBST([DATADIRNAME])
354 dnl For backward compatibility. Some Makefiles may be using this.
356 AC_SUBST([INSTOBJEXT])
358 dnl For backward compatibility. Some Makefiles may be using this.
362 dnl For backward compatibility. Some Makefiles may be using this.
364 if test "$USE_INCLUDED_LIBINTL" = yes; then
365 INTLOBJS="\$(GETTOBJS)"
369 dnl Enable libtool support if the surrounding package wishes it.
370 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
371 AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX])
374 dnl For backward compatibility. Some Makefiles may be using this.
378 dnl Make all documented variables known to autoconf.
380 AC_SUBST([LTLIBINTL])
385 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
386 m4_define([gt_NEEDS_INIT],
388 m4_divert_text([DEFAULTS], [gt_needs=])
389 m4_define([gt_NEEDS_INIT], [])
393 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
394 AC_DEFUN([AM_GNU_GETTEXT_NEED],
396 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
400 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
401 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])