1 # gettext.m4 serial 60 (gettext-0.17)
2 dnl Copyright (C) 1995-2007 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)
145 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
149 gt_revision_test_code=
151 if test $gt_api_version -ge 2; then
152 gt_expression_test_code=' + * ngettext ("", "", 0)'
154 gt_expression_test_code=
157 AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
158 [AC_TRY_LINK([#include <libintl.h>
159 $gt_revision_test_code
160 extern int _nl_msg_cat_cntr;
161 extern int *_nl_domain_bindings;],
162 [bindtextdomain ("", "");
163 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings],
164 [eval "$gt_func_gnugettext_libc=yes"],
165 [eval "$gt_func_gnugettext_libc=no"])])
167 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
168 dnl Sometimes libintl requires libiconv, so first search for libiconv.
169 ifelse(gt_included_intl, yes, , [
172 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
173 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
174 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
175 dnl even if libiconv doesn't exist.
176 AC_LIB_LINKFLAGS_BODY([intl])
177 AC_CACHE_CHECK([for GNU gettext in libintl],
178 [$gt_func_gnugettext_libintl],
179 [gt_save_CPPFLAGS="$CPPFLAGS"
180 CPPFLAGS="$CPPFLAGS $INCINTL"
182 LIBS="$LIBS $LIBINTL"
183 dnl Now see whether libintl exists and does not depend on libiconv.
184 AC_TRY_LINK([#include <libintl.h>
185 $gt_revision_test_code
186 extern int _nl_msg_cat_cntr;
191 const char *_nl_expand_alias (const char *);],
192 [bindtextdomain ("", "");
193 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
194 [eval "$gt_func_gnugettext_libintl=yes"],
195 [eval "$gt_func_gnugettext_libintl=no"])
196 dnl Now see whether libintl exists and depends on libiconv.
197 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
198 LIBS="$LIBS $LIBICONV"
199 AC_TRY_LINK([#include <libintl.h>
200 $gt_revision_test_code
201 extern int _nl_msg_cat_cntr;
206 const char *_nl_expand_alias (const char *);],
207 [bindtextdomain ("", "");
208 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
209 [LIBINTL="$LIBINTL $LIBICONV"
210 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
211 eval "$gt_func_gnugettext_libintl=yes"
214 CPPFLAGS="$gt_save_CPPFLAGS"
215 LIBS="$gt_save_LIBS"])
218 dnl If an already present or preinstalled GNU gettext() is found,
219 dnl use it. But if this macro is used in GNU gettext, and GNU
220 dnl gettext is already preinstalled in libintl, we update this
221 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
222 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
223 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
224 && test "$PACKAGE" != gettext-runtime \
225 && test "$PACKAGE" != gettext-tools; }; then
226 gt_use_preinstalled_gnugettext=yes
228 dnl Reset the values set by searching for libintl.
234 ifelse(gt_included_intl, yes, [
235 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
236 dnl GNU gettext is not found in the C library.
237 dnl Fall back on included GNU gettext library.
238 nls_cv_use_gnu_gettext=yes
242 if test "$nls_cv_use_gnu_gettext" = "yes"; then
243 dnl Mark actions used to generate GNU NLS library.
244 BUILD_INCLUDED_LIBINTL=yes
245 USE_INCLUDED_LIBINTL=yes
246 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
247 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
248 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
252 if test "$gt_use_preinstalled_gnugettext" = "yes" \
253 || test "$nls_cv_use_gnu_gettext" = "yes"; then
254 dnl Mark actions to use GNU gettext tools.
259 if test -n "$INTL_MACOSX_LIBS"; then
260 if test "$gt_use_preinstalled_gnugettext" = "yes" \
261 || test "$nls_cv_use_gnu_gettext" = "yes"; then
262 dnl Some extra flags are needed during linking.
263 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
264 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
268 if test "$gt_use_preinstalled_gnugettext" = "yes" \
269 || test "$nls_cv_use_gnu_gettext" = "yes"; then
270 AC_DEFINE(ENABLE_NLS, 1,
271 [Define to 1 if translation of program messages to the user's native language
278 AC_MSG_CHECKING([whether to use NLS])
279 AC_MSG_RESULT([$USE_NLS])
280 if test "$USE_NLS" = "yes"; then
281 AC_MSG_CHECKING([where the gettext function comes from])
282 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
283 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
284 gt_source="external libintl"
289 gt_source="included intl directory"
291 AC_MSG_RESULT([$gt_source])
294 if test "$USE_NLS" = "yes"; then
296 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
297 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
298 AC_MSG_CHECKING([how to link with libintl])
299 AC_MSG_RESULT([$LIBINTL])
300 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
303 dnl For backward compatibility. Some packages may be using this.
304 AC_DEFINE(HAVE_GETTEXT, 1,
305 [Define if the GNU gettext() function is already present or preinstalled.])
306 AC_DEFINE(HAVE_DCGETTEXT, 1,
307 [Define if the GNU dcgettext() function is already present or preinstalled.])
310 dnl We need to process the po/ directory.
314 ifelse(gt_included_intl, yes, [
315 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
316 dnl to 'yes' because some of the testsuite requires it.
317 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
318 BUILD_INCLUDED_LIBINTL=yes
321 dnl Make all variables we use known to autoconf.
322 AC_SUBST(BUILD_INCLUDED_LIBINTL)
323 AC_SUBST(USE_INCLUDED_LIBINTL)
326 dnl For backward compatibility. Some configure.ins may be using this.
330 dnl For backward compatibility. Some Makefiles may be using this.
332 AC_SUBST(DATADIRNAME)
334 dnl For backward compatibility. Some Makefiles may be using this.
338 dnl For backward compatibility. Some Makefiles may be using this.
342 dnl For backward compatibility. Some Makefiles may be using this.
344 if test "$USE_INCLUDED_LIBINTL" = yes; then
345 INTLOBJS="\$(GETTOBJS)"
349 dnl Enable libtool support if the surrounding package wishes it.
350 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
351 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
354 dnl For backward compatibility. Some Makefiles may be using this.
358 dnl Make all documented variables known to autoconf.
365 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
366 m4_define([gt_NEEDS_INIT],
368 m4_divert_text([DEFAULTS], [gt_needs=])
369 m4_define([gt_NEEDS_INIT], [])
373 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
374 AC_DEFUN([AM_GNU_GETTEXT_NEED],
376 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
380 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
381 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])