1 # gettext.m4 serial 68 (gettext-0.19.8)
2 dnl Copyright (C) 1995-2014, 2016 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 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 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 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
165 extern int _nl_msg_cat_cntr;
166 extern int *_nl_domain_bindings;
167 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings)
169 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
171 $gt_revision_test_code
174 bindtextdomain ("", "");
175 return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
177 [eval "$gt_func_gnugettext_libc=yes"],
178 [eval "$gt_func_gnugettext_libc=no"])])
180 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
181 dnl Sometimes libintl requires libiconv, so first search for libiconv.
182 ifelse(gt_included_intl, yes, , [
185 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
186 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
187 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
188 dnl even if libiconv doesn't exist.
189 AC_LIB_LINKFLAGS_BODY([intl])
190 AC_CACHE_CHECK([for GNU gettext in libintl],
191 [$gt_func_gnugettext_libintl],
192 [gt_save_CPPFLAGS="$CPPFLAGS"
193 CPPFLAGS="$CPPFLAGS $INCINTL"
195 LIBS="$LIBS $LIBINTL $INTL_MACOSX_LIBS"
196 dnl Now see whether libintl exists and does not depend on libiconv.
201 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
202 extern int _nl_msg_cat_cntr;
207 const char *_nl_expand_alias (const char *);
208 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
210 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
212 $gt_revision_test_code
215 bindtextdomain ("", "");
216 return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
218 [eval "$gt_func_gnugettext_libintl=yes"],
219 [eval "$gt_func_gnugettext_libintl=no"])
220 dnl Now see whether libintl exists and depends on libiconv.
221 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
222 LIBS="$LIBS $LIBICONV"
227 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
228 extern int _nl_msg_cat_cntr;
233 const char *_nl_expand_alias (const char *);
234 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
236 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
238 $gt_revision_test_code
241 bindtextdomain ("", "");
242 return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
244 [LIBINTL="$LIBINTL $LIBICONV"
245 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
246 eval "$gt_func_gnugettext_libintl=yes"
249 CPPFLAGS="$gt_save_CPPFLAGS"
250 LIBS="$gt_save_LIBS"])
253 dnl If an already present or preinstalled GNU gettext() is found,
254 dnl use it. But if this macro is used in GNU gettext, and GNU
255 dnl gettext is already preinstalled in libintl, we update this
256 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
257 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
258 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
259 && test "$PACKAGE" != gettext-runtime \
260 && test "$PACKAGE" != gettext-tools; }; then
261 gt_use_preinstalled_gnugettext=yes
263 dnl Reset the values set by searching for libintl.
269 ifelse(gt_included_intl, yes, [
270 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
271 dnl GNU gettext is not found in the C library.
272 dnl Fall back on included GNU gettext library.
273 nls_cv_use_gnu_gettext=yes
277 if test "$nls_cv_use_gnu_gettext" = "yes"; then
278 dnl Mark actions used to generate GNU NLS library.
279 BUILD_INCLUDED_LIBINTL=yes
280 USE_INCLUDED_LIBINTL=yes
281 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
282 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
283 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
287 if test "$gt_use_preinstalled_gnugettext" = "yes" \
288 || test "$nls_cv_use_gnu_gettext" = "yes"; then
289 dnl Mark actions to use GNU gettext tools.
294 if test -n "$INTL_MACOSX_LIBS"; then
295 if test "$gt_use_preinstalled_gnugettext" = "yes" \
296 || test "$nls_cv_use_gnu_gettext" = "yes"; then
297 dnl Some extra flags are needed during linking.
298 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
299 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
303 if test "$gt_use_preinstalled_gnugettext" = "yes" \
304 || test "$nls_cv_use_gnu_gettext" = "yes"; then
305 AC_DEFINE([ENABLE_NLS], [1],
306 [Define to 1 if translation of program messages to the user's native language
313 AC_MSG_CHECKING([whether to use NLS])
314 AC_MSG_RESULT([$USE_NLS])
315 if test "$USE_NLS" = "yes"; then
316 AC_MSG_CHECKING([where the gettext function comes from])
317 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
318 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
319 gt_source="external libintl"
324 gt_source="included intl directory"
326 AC_MSG_RESULT([$gt_source])
329 if test "$USE_NLS" = "yes"; then
331 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
332 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
333 AC_MSG_CHECKING([how to link with libintl])
334 AC_MSG_RESULT([$LIBINTL])
335 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
338 dnl For backward compatibility. Some packages may be using this.
339 AC_DEFINE([HAVE_GETTEXT], [1],
340 [Define if the GNU gettext() function is already present or preinstalled.])
341 AC_DEFINE([HAVE_DCGETTEXT], [1],
342 [Define if the GNU dcgettext() function is already present or preinstalled.])
345 dnl We need to process the po/ directory.
349 ifelse(gt_included_intl, yes, [
350 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
351 dnl to 'yes' because some of the testsuite requires it.
352 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
353 BUILD_INCLUDED_LIBINTL=yes
356 dnl Make all variables we use known to autoconf.
357 AC_SUBST([BUILD_INCLUDED_LIBINTL])
358 AC_SUBST([USE_INCLUDED_LIBINTL])
359 AC_SUBST([CATOBJEXT])
361 dnl For backward compatibility. Some configure.ins may be using this.
365 dnl For backward compatibility. Some Makefiles may be using this.
367 AC_SUBST([DATADIRNAME])
369 dnl For backward compatibility. Some Makefiles may be using this.
371 AC_SUBST([INSTOBJEXT])
373 dnl For backward compatibility. Some Makefiles may be using this.
377 dnl For backward compatibility. Some Makefiles may be using this.
379 if test "$USE_INCLUDED_LIBINTL" = yes; then
380 INTLOBJS="\$(GETTOBJS)"
384 dnl Enable libtool support if the surrounding package wishes it.
385 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
386 AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX])
389 dnl For backward compatibility. Some Makefiles may be using this.
393 dnl Make all documented variables known to autoconf.
395 AC_SUBST([LTLIBINTL])
400 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
401 m4_define([gt_NEEDS_INIT],
403 m4_divert_text([DEFAULTS], [gt_needs=])
404 m4_define([gt_NEEDS_INIT], [])
408 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
409 AC_DEFUN([AM_GNU_GETTEXT_NEED],
411 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
415 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
416 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
419 dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version])
420 AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], [])