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1 | # gettext.m4 serial 70 (gettext-0.20) |
2 | dnl Copyright (C) 1995-2014, 2016, 2018 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. | |
6 | dnl | |
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 | |
10 | dnl functionality. | |
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. | |
15 | ||
16 | dnl Authors: | |
17 | dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000. | |
18 | dnl Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010. | |
19 | ||
20 | dnl Macro to add for using GNU gettext. | |
21 | ||
22 | dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]). | |
23 | dnl INTLSYMBOL must be one of 'external', 'use-libtool'. | |
24 | dnl INTLSYMBOL should be 'external' for packages other than GNU gettext, and | |
25 | dnl 'use-libtool' for the packages 'gettext-runtime' and 'gettext-tools'. | |
26 | dnl If INTLSYMBOL is 'use-libtool', then a libtool library | |
27 | dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static, | |
28 | dnl depending on --{enable,disable}-{shared,static} and on the presence of | |
29 | dnl AM-DISABLE-SHARED). | |
30 | dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext | |
31 | dnl implementations (in libc or libintl) without the ngettext() function | |
32 | dnl will be ignored. If NEEDSYMBOL is specified and is | |
33 | dnl 'need-formatstring-macros', then GNU gettext implementations that don't | |
34 | dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored. | |
35 | dnl INTLDIR is used to find the intl libraries. If empty, | |
36 | dnl the value '$(top_builddir)/intl/' is used. | |
37 | dnl | |
38 | dnl The result of the configuration is one of three cases: | |
39 | dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled | |
40 | dnl and used. | |
41 | dnl Catalog format: GNU --> install in $(datadir) | |
42 | dnl Catalog extension: .mo after installation, .gmo in source tree | |
43 | dnl 2) GNU gettext has been found in the system's C library. | |
44 | dnl Catalog format: GNU --> install in $(datadir) | |
45 | dnl Catalog extension: .mo after installation, .gmo in source tree | |
46 | dnl 3) No internationalization, always use English msgid. | |
47 | dnl Catalog format: none | |
48 | dnl Catalog extension: none | |
49 | dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur. | |
50 | dnl The use of .gmo is historical (it was needed to avoid overwriting the | |
51 | dnl GNU format catalogs when building on a platform with an X/Open gettext), | |
52 | dnl but we keep it in order not to force irrelevant filename changes on the | |
53 | dnl maintainers. | |
54 | dnl | |
55 | AC_DEFUN([AM_GNU_GETTEXT], | |
56 | [ | |
57 | dnl Argument checking. | |
58 | ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [use-libtool], , | |
59 | [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT | |
60 | ])])])]) | |
61 | ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old], | |
62 | [errprint([ERROR: Use of AM_GNU_GETTEXT without [external] argument is no longer supported. | |
63 | ])]) | |
64 | ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], , | |
65 | [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT | |
66 | ])])])]) | |
67 | define([gt_included_intl], | |
68 | ifelse([$1], [external], [no], [yes])) | |
69 | gt_NEEDS_INIT | |
70 | AM_GNU_GETTEXT_NEED([$2]) | |
71 | ||
72 | AC_REQUIRE([AM_PO_SUBDIRS])dnl | |
73 | ifelse(gt_included_intl, yes, [ | |
74 | AC_REQUIRE([AM_INTL_SUBDIR])dnl | |
75 | ]) | |
76 | ||
77 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. | |
78 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) | |
79 | AC_REQUIRE([AC_LIB_RPATH]) | |
80 | ||
81 | dnl Sometimes libintl requires libiconv, so first search for libiconv. | |
82 | dnl Ideally we would do this search only after the | |
83 | dnl if test "$USE_NLS" = "yes"; then | |
84 | dnl if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then | |
85 | dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT | |
86 | dnl the configure script would need to contain the same shell code | |
87 | dnl again, outside any 'if'. There are two solutions: | |
88 | dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'. | |
89 | dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE. | |
90 | dnl Since AC_PROVIDE_IFELSE is not documented, we avoid it. | |
91 | ifelse(gt_included_intl, yes, , [ | |
92 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) | |
93 | ]) | |
94 | ||
95 | dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation. | |
96 | gt_INTL_MACOSX | |
97 | ||
98 | dnl Set USE_NLS. | |
99 | AC_REQUIRE([AM_NLS]) | |
100 | ||
101 | ifelse(gt_included_intl, yes, [ | |
102 | BUILD_INCLUDED_LIBINTL=no | |
103 | USE_INCLUDED_LIBINTL=no | |
104 | ]) | |
105 | LIBINTL= | |
106 | LTLIBINTL= | |
107 | POSUB= | |
108 | ||
109 | dnl Add a version number to the cache macros. | |
110 | case " $gt_needs " in | |
111 | *" need-formatstring-macros "*) gt_api_version=3 ;; | |
112 | *" need-ngettext "*) gt_api_version=2 ;; | |
113 | *) gt_api_version=1 ;; | |
114 | esac | |
115 | gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc" | |
116 | gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl" | |
117 | ||
118 | dnl If we use NLS figure out what method | |
119 | if test "$USE_NLS" = "yes"; then | |
120 | gt_use_preinstalled_gnugettext=no | |
121 | ifelse(gt_included_intl, yes, [ | |
122 | AC_MSG_CHECKING([whether included gettext is requested]) | |
123 | AC_ARG_WITH([included-gettext], | |
124 | [ --with-included-gettext use the GNU gettext library included here], | |
125 | nls_cv_force_use_gnu_gettext=$withval, | |
126 | nls_cv_force_use_gnu_gettext=no) | |
127 | AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext]) | |
128 | ||
129 | nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" | |
130 | if test "$nls_cv_force_use_gnu_gettext" != "yes"; then | |
131 | ]) | |
132 | dnl User does not insist on using GNU NLS library. Figure out what | |
133 | dnl to use. If GNU gettext is available we use this. Else we have | |
134 | dnl to fall back to GNU NLS library. | |
135 | ||
136 | if test $gt_api_version -ge 3; then | |
137 | gt_revision_test_code=' | |
138 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
139 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) | |
140 | #endif | |
141 | changequote(,)dnl | |
142 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; | |
143 | changequote([,])dnl | |
144 | ' | |
145 | else | |
146 | gt_revision_test_code= | |
147 | fi | |
148 | if test $gt_api_version -ge 2; then | |
149 | gt_expression_test_code=' + * ngettext ("", "", 0)' | |
150 | else | |
151 | gt_expression_test_code= | |
152 | fi | |
153 | ||
154 | AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc], | |
155 | [AC_LINK_IFELSE( | |
156 | [AC_LANG_PROGRAM( | |
157 | [[ | |
158 | #include <libintl.h> | |
159 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
160 | extern int _nl_msg_cat_cntr; | |
161 | extern int *_nl_domain_bindings; | |
162 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings) | |
163 | #else | |
164 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
165 | #endif | |
166 | $gt_revision_test_code | |
167 | ]], | |
168 | [[ | |
169 | bindtextdomain ("", ""); | |
170 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
171 | ]])], | |
172 | [eval "$gt_func_gnugettext_libc=yes"], | |
173 | [eval "$gt_func_gnugettext_libc=no"])]) | |
174 | ||
175 | if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then | |
176 | dnl Sometimes libintl requires libiconv, so first search for libiconv. | |
177 | ifelse(gt_included_intl, yes, , [ | |
178 | AM_ICONV_LINK | |
179 | ]) | |
180 | dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL | |
181 | dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) | |
182 | dnl because that would add "-liconv" to LIBINTL and LTLIBINTL | |
183 | dnl even if libiconv doesn't exist. | |
184 | AC_LIB_LINKFLAGS_BODY([intl]) | |
185 | AC_CACHE_CHECK([for GNU gettext in libintl], | |
186 | [$gt_func_gnugettext_libintl], | |
187 | [gt_save_CPPFLAGS="$CPPFLAGS" | |
188 | CPPFLAGS="$CPPFLAGS $INCINTL" | |
189 | gt_save_LIBS="$LIBS" | |
190 | LIBS="$LIBS $LIBINTL" | |
191 | dnl Now see whether libintl exists and does not depend on libiconv. | |
192 | AC_LINK_IFELSE( | |
193 | [AC_LANG_PROGRAM( | |
194 | [[ | |
195 | #include <libintl.h> | |
196 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
197 | extern int _nl_msg_cat_cntr; | |
198 | extern | |
199 | #ifdef __cplusplus | |
200 | "C" | |
201 | #endif | |
202 | const char *_nl_expand_alias (const char *); | |
203 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) | |
204 | #else | |
205 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
206 | #endif | |
207 | $gt_revision_test_code | |
208 | ]], | |
209 | [[ | |
210 | bindtextdomain ("", ""); | |
211 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
212 | ]])], | |
213 | [eval "$gt_func_gnugettext_libintl=yes"], | |
214 | [eval "$gt_func_gnugettext_libintl=no"]) | |
215 | dnl Now see whether libintl exists and depends on libiconv. | |
216 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then | |
217 | LIBS="$LIBS $LIBICONV" | |
218 | AC_LINK_IFELSE( | |
219 | [AC_LANG_PROGRAM( | |
220 | [[ | |
221 | #include <libintl.h> | |
222 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
223 | extern int _nl_msg_cat_cntr; | |
224 | extern | |
225 | #ifdef __cplusplus | |
226 | "C" | |
227 | #endif | |
228 | const char *_nl_expand_alias (const char *); | |
229 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) | |
230 | #else | |
231 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
232 | #endif | |
233 | $gt_revision_test_code | |
234 | ]], | |
235 | [[ | |
236 | bindtextdomain ("", ""); | |
237 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
238 | ]])], | |
239 | [LIBINTL="$LIBINTL $LIBICONV" | |
240 | LTLIBINTL="$LTLIBINTL $LTLIBICONV" | |
241 | eval "$gt_func_gnugettext_libintl=yes" | |
242 | ]) | |
243 | fi | |
244 | CPPFLAGS="$gt_save_CPPFLAGS" | |
245 | LIBS="$gt_save_LIBS"]) | |
246 | fi | |
247 | ||
248 | dnl If an already present or preinstalled GNU gettext() is found, | |
249 | dnl use it. But if this macro is used in GNU gettext, and GNU | |
250 | dnl gettext is already preinstalled in libintl, we update this | |
251 | dnl libintl. (Cf. the install rule in intl/Makefile.in.) | |
252 | if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ | |
253 | || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ | |
254 | && test "$PACKAGE" != gettext-runtime \ | |
255 | && test "$PACKAGE" != gettext-tools; }; then | |
256 | gt_use_preinstalled_gnugettext=yes | |
257 | else | |
258 | dnl Reset the values set by searching for libintl. | |
259 | LIBINTL= | |
260 | LTLIBINTL= | |
261 | INCINTL= | |
262 | fi | |
263 | ||
264 | ifelse(gt_included_intl, yes, [ | |
265 | if test "$gt_use_preinstalled_gnugettext" != "yes"; then | |
266 | dnl GNU gettext is not found in the C library. | |
267 | dnl Fall back on included GNU gettext library. | |
268 | nls_cv_use_gnu_gettext=yes | |
269 | fi | |
270 | fi | |
271 | ||
272 | if test "$nls_cv_use_gnu_gettext" = "yes"; then | |
273 | dnl Mark actions used to generate GNU NLS library. | |
274 | BUILD_INCLUDED_LIBINTL=yes | |
275 | USE_INCLUDED_LIBINTL=yes | |
276 | LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LIBICONV $LIBTHREAD" | |
277 | LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LTLIBICONV $LTLIBTHREAD" | |
278 | LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` | |
279 | fi | |
280 | ||
281 | CATOBJEXT= | |
282 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
283 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
284 | dnl Mark actions to use GNU gettext tools. | |
285 | CATOBJEXT=.gmo | |
286 | fi | |
287 | ]) | |
288 | ||
289 | if test -n "$INTL_MACOSX_LIBS"; then | |
290 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
291 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
292 | dnl Some extra flags are needed during linking. | |
293 | LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" | |
294 | LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" | |
295 | fi | |
296 | fi | |
297 | ||
298 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
299 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
300 | AC_DEFINE([ENABLE_NLS], [1], | |
301 | [Define to 1 if translation of program messages to the user's native language | |
302 | is requested.]) | |
303 | else | |
304 | USE_NLS=no | |
305 | fi | |
306 | fi | |
307 | ||
308 | AC_MSG_CHECKING([whether to use NLS]) | |
309 | AC_MSG_RESULT([$USE_NLS]) | |
310 | if test "$USE_NLS" = "yes"; then | |
311 | AC_MSG_CHECKING([where the gettext function comes from]) | |
312 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then | |
313 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then | |
314 | gt_source="external libintl" | |
315 | else | |
316 | gt_source="libc" | |
317 | fi | |
318 | else | |
319 | gt_source="included intl directory" | |
320 | fi | |
321 | AC_MSG_RESULT([$gt_source]) | |
322 | fi | |
323 | ||
324 | if test "$USE_NLS" = "yes"; then | |
325 | ||
326 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then | |
327 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then | |
328 | AC_MSG_CHECKING([how to link with libintl]) | |
329 | AC_MSG_RESULT([$LIBINTL]) | |
330 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) | |
331 | fi | |
332 | ||
333 | dnl For backward compatibility. Some packages may be using this. | |
334 | AC_DEFINE([HAVE_GETTEXT], [1], | |
335 | [Define if the GNU gettext() function is already present or preinstalled.]) | |
336 | AC_DEFINE([HAVE_DCGETTEXT], [1], | |
337 | [Define if the GNU dcgettext() function is already present or preinstalled.]) | |
338 | fi | |
339 | ||
340 | dnl We need to process the po/ directory. | |
341 | POSUB=po | |
342 | fi | |
343 | ||
344 | ifelse(gt_included_intl, yes, [ | |
345 | dnl In GNU gettext we have to set BUILD_INCLUDED_LIBINTL to 'yes' | |
346 | dnl because some of the testsuite requires it. | |
347 | BUILD_INCLUDED_LIBINTL=yes | |
348 | ||
349 | dnl Make all variables we use known to autoconf. | |
350 | AC_SUBST([BUILD_INCLUDED_LIBINTL]) | |
351 | AC_SUBST([USE_INCLUDED_LIBINTL]) | |
352 | AC_SUBST([CATOBJEXT]) | |
353 | ]) | |
354 | ||
355 | dnl For backward compatibility. Some Makefiles may be using this. | |
356 | INTLLIBS="$LIBINTL" | |
357 | AC_SUBST([INTLLIBS]) | |
358 | ||
359 | dnl Make all documented variables known to autoconf. | |
360 | AC_SUBST([LIBINTL]) | |
361 | AC_SUBST([LTLIBINTL]) | |
362 | AC_SUBST([POSUB]) | |
363 | ]) | |
364 | ||
365 | ||
366 | dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. | |
367 | m4_define([gt_NEEDS_INIT], | |
368 | [ | |
369 | m4_divert_text([DEFAULTS], [gt_needs=]) | |
370 | m4_define([gt_NEEDS_INIT], []) | |
371 | ]) | |
372 | ||
373 | ||
374 | dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) | |
375 | AC_DEFUN([AM_GNU_GETTEXT_NEED], | |
376 | [ | |
377 | m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) | |
378 | ]) | |
379 | ||
380 | ||
381 | dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) | |
382 | AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) | |
383 | ||
384 | ||
385 | dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version]) | |
386 | AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], []) |