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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. | |
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 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. | |
39 | dnl | |
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 | |
42 | dnl and used. | |
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 | |
55 | dnl maintainers. | |
56 | dnl | |
57 | AC_DEFUN([AM_GNU_GETTEXT], | |
58 | [ | |
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 | |
62 | ])])])])]) | |
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 | |
67 | ])])])]) | |
68 | define([gt_included_intl], | |
69 | ifelse([$1], [external], | |
70 | ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]), | |
71 | [yes])) | |
72 | define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], [])) | |
73 | gt_NEEDS_INIT | |
74 | AM_GNU_GETTEXT_NEED([$2]) | |
75 | ||
76 | AC_REQUIRE([AM_PO_SUBDIRS])dnl | |
77 | ifelse(gt_included_intl, yes, [ | |
78 | AC_REQUIRE([AM_INTL_SUBDIR])dnl | |
79 | ]) | |
80 | ||
81 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. | |
82 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) | |
83 | AC_REQUIRE([AC_LIB_RPATH]) | |
84 | ||
85 | dnl Sometimes libintl requires libiconv, so first search for libiconv. | |
86 | dnl Ideally we would do this search only after the | |
87 | dnl if test "$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]) | |
98 | ]) | |
99 | ||
100 | dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation. | |
101 | gt_INTL_MACOSX | |
102 | ||
103 | dnl Set USE_NLS. | |
104 | AC_REQUIRE([AM_NLS]) | |
105 | ||
106 | ifelse(gt_included_intl, yes, [ | |
107 | BUILD_INCLUDED_LIBINTL=no | |
108 | USE_INCLUDED_LIBINTL=no | |
109 | ]) | |
110 | LIBINTL= | |
111 | LTLIBINTL= | |
112 | POSUB= | |
113 | ||
114 | dnl Add a version number to the cache macros. | |
115 | case " $gt_needs " in | |
116 | *" need-formatstring-macros "*) gt_api_version=3 ;; | |
117 | *" need-ngettext "*) gt_api_version=2 ;; | |
118 | *) gt_api_version=1 ;; | |
119 | esac | |
120 | gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc" | |
121 | gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl" | |
122 | ||
123 | dnl If we use NLS figure out what method | |
124 | if test "$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]) | |
133 | ||
134 | nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" | |
135 | if test "$nls_cv_force_use_gnu_gettext" != "yes"; then | |
136 | ]) | |
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. | |
140 | ||
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) | |
145 | #endif | |
146 | changequote(,)dnl | |
147 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; | |
148 | changequote([,])dnl | |
149 | ' | |
150 | else | |
151 | gt_revision_test_code= | |
152 | fi | |
153 | if test $gt_api_version -ge 2; then | |
154 | gt_expression_test_code=' + * ngettext ("", "", 0)' | |
155 | else | |
156 | gt_expression_test_code= | |
157 | fi | |
158 | ||
159 | AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc], | |
160 | [AC_LINK_IFELSE( | |
161 | [AC_LANG_PROGRAM( | |
162 | [[ | |
163 | #include <libintl.h> | |
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) | |
168 | #else | |
169 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
170 | #endif | |
171 | $gt_revision_test_code | |
172 | ]], | |
173 | [[ | |
174 | bindtextdomain ("", ""); | |
175 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
176 | ]])], | |
177 | [eval "$gt_func_gnugettext_libc=yes"], | |
178 | [eval "$gt_func_gnugettext_libc=no"])]) | |
179 | ||
180 | if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then | |
181 | dnl Sometimes libintl requires libiconv, so first search for libiconv. | |
182 | ifelse(gt_included_intl, yes, , [ | |
183 | AM_ICONV_LINK | |
184 | ]) | |
185 | dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL | |
186 | dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) | |
187 | dnl because that would add "-liconv" to LIBINTL and LTLIBINTL | |
188 | dnl even if libiconv doesn't exist. | |
189 | AC_LIB_LINKFLAGS_BODY([intl]) | |
190 | AC_CACHE_CHECK([for GNU gettext in libintl], | |
191 | [$gt_func_gnugettext_libintl], | |
192 | [gt_save_CPPFLAGS="$CPPFLAGS" | |
193 | CPPFLAGS="$CPPFLAGS $INCINTL" | |
194 | gt_save_LIBS="$LIBS" | |
195 | LIBS="$LIBS $LIBINTL" | |
196 | dnl Now see whether libintl exists and does not depend on libiconv. | |
197 | AC_LINK_IFELSE( | |
198 | [AC_LANG_PROGRAM( | |
199 | [[ | |
200 | #include <libintl.h> | |
201 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
202 | extern int _nl_msg_cat_cntr; | |
203 | extern | |
204 | #ifdef __cplusplus | |
205 | "C" | |
206 | #endif | |
207 | const char *_nl_expand_alias (const char *); | |
208 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) | |
209 | #else | |
210 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
211 | #endif | |
212 | $gt_revision_test_code | |
213 | ]], | |
214 | [[ | |
215 | bindtextdomain ("", ""); | |
216 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
217 | ]])], | |
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" | |
223 | AC_LINK_IFELSE( | |
224 | [AC_LANG_PROGRAM( | |
225 | [[ | |
226 | #include <libintl.h> | |
227 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
228 | extern int _nl_msg_cat_cntr; | |
229 | extern | |
230 | #ifdef __cplusplus | |
231 | "C" | |
232 | #endif | |
233 | const char *_nl_expand_alias (const char *); | |
234 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) | |
235 | #else | |
236 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
237 | #endif | |
238 | $gt_revision_test_code | |
239 | ]], | |
240 | [[ | |
241 | bindtextdomain ("", ""); | |
242 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
243 | ]])], | |
244 | [LIBINTL="$LIBINTL $LIBICONV" | |
245 | LTLIBINTL="$LTLIBINTL $LTLIBICONV" | |
246 | eval "$gt_func_gnugettext_libintl=yes" | |
247 | ]) | |
248 | fi | |
249 | CPPFLAGS="$gt_save_CPPFLAGS" | |
250 | LIBS="$gt_save_LIBS"]) | |
251 | fi | |
252 | ||
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 "$PACKAGE" != gettext-tools; }; then | |
261 | gt_use_preinstalled_gnugettext=yes | |
262 | else | |
263 | dnl Reset the values set by searching for libintl. | |
264 | LIBINTL= | |
265 | LTLIBINTL= | |
266 | INCINTL= | |
267 | fi | |
268 | ||
269 | ifelse(gt_included_intl, yes, [ | |
270 | if test "$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 | |
274 | fi | |
275 | fi | |
276 | ||
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/ $//'` | |
284 | fi | |
285 | ||
286 | CATOBJEXT= | |
287 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
288 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
289 | dnl Mark actions to use GNU gettext tools. | |
290 | CATOBJEXT=.gmo | |
291 | fi | |
292 | ]) | |
293 | ||
294 | if test -n "$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 $INTL_MACOSX_LIBS" | |
300 | fi | |
301 | fi | |
302 | ||
303 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
304 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
305 | AC_DEFINE([ENABLE_NLS], [1], | |
306 | [Define to 1 if translation of program messages to the user's native language | |
307 | is requested.]) | |
308 | else | |
309 | USE_NLS=no | |
310 | fi | |
311 | fi | |
312 | ||
313 | AC_MSG_CHECKING([whether to use NLS]) | |
314 | AC_MSG_RESULT([$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 "$gt_val" = "yes"; }; then | |
319 | gt_source="external libintl" | |
320 | else | |
321 | gt_source="libc" | |
322 | fi | |
323 | else | |
324 | gt_source="included intl directory" | |
325 | fi | |
326 | AC_MSG_RESULT([$gt_source]) | |
327 | fi | |
328 | ||
329 | if test "$USE_NLS" = "yes"; then | |
330 | ||
331 | if test "$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], [$INCINTL]) | |
336 | fi | |
337 | ||
338 | dnl For backward compatibility. Some packages may be using this. | |
339 | AC_DEFINE([HAVE_GETTEXT], [1], | |
340 | [Define if the GNU gettext() function is already present or preinstalled.]) | |
341 | AC_DEFINE([HAVE_DCGETTEXT], [1], | |
342 | [Define if the GNU dcgettext() function is already present or preinstalled.]) | |
343 | fi | |
344 | ||
345 | dnl We need to process the po/ directory. | |
346 | POSUB=po | |
347 | fi | |
348 | ||
349 | ifelse(gt_included_intl, yes, [ | |
350 | dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL | |
351 | dnl to 'yes' because some of the testsuite requires it. | |
352 | if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then | |
353 | BUILD_INCLUDED_LIBINTL=yes | |
354 | fi | |
355 | ||
356 | dnl Make all variables we use known to autoconf. | |
357 | AC_SUBST([BUILD_INCLUDED_LIBINTL]) | |
358 | AC_SUBST([USE_INCLUDED_LIBINTL]) | |
359 | AC_SUBST([CATOBJEXT]) | |
360 | ||
361 | dnl For backward compatibility. Some configure.ins may be using this. | |
362 | nls_cv_header_intl= | |
363 | nls_cv_header_libgt= | |
364 | ||
365 | dnl For backward compatibility. Some Makefiles may be using this. | |
366 | DATADIRNAME=share | |
367 | AC_SUBST([DATADIRNAME]) | |
368 | ||
369 | dnl For backward compatibility. Some Makefiles may be using this. | |
370 | INSTOBJEXT=.mo | |
371 | AC_SUBST([INSTOBJEXT]) | |
372 | ||
373 | dnl For backward compatibility. Some Makefiles may be using this. | |
374 | GENCAT=gencat | |
375 | AC_SUBST([GENCAT]) | |
376 | ||
377 | dnl For backward compatibility. Some Makefiles may be using this. | |
378 | INTLOBJS= | |
379 | if test "$USE_INCLUDED_LIBINTL" = yes; then | |
380 | INTLOBJS="\$(GETTOBJS)" | |
381 | fi | |
382 | AC_SUBST([INTLOBJS]) | |
383 | ||
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]) | |
387 | ]) | |
388 | ||
389 | dnl For backward compatibility. Some Makefiles may be using this. | |
390 | INTLLIBS="$LIBINTL" | |
391 | AC_SUBST([INTLLIBS]) | |
392 | ||
393 | dnl Make all documented variables known to autoconf. | |
394 | AC_SUBST([LIBINTL]) | |
395 | AC_SUBST([LTLIBINTL]) | |
396 | AC_SUBST([POSUB]) | |
397 | ]) | |
398 | ||
399 | ||
400 | dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. | |
401 | m4_define([gt_NEEDS_INIT], | |
402 | [ | |
403 | m4_divert_text([DEFAULTS], [gt_needs=]) | |
404 | m4_define([gt_NEEDS_INIT], []) | |
405 | ]) | |
406 | ||
407 | ||
408 | dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) | |
409 | AC_DEFUN([AM_GNU_GETTEXT_NEED], | |
410 | [ | |
411 | m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) | |
412 | ]) | |
413 | ||
414 | ||
415 | dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) | |
416 | AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) | |
417 | ||
418 | ||
419 | dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version]) | |
420 | AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], []) |