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1 | # gettext.m4 serial 69 (gettext-0.19.9) |
2 | dnl Copyright (C) 1995-2014, 2016, 2018-2019 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 not documented, we avoid it. | |
95 | ifelse(gt_included_intl, yes, , [ | |
96 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) | |
97 | ]) | |
98 | ||
99 | dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation. | |
100 | gt_INTL_MACOSX | |
101 | ||
102 | dnl Set USE_NLS. | |
103 | AC_REQUIRE([AM_NLS]) | |
104 | ||
105 | ifelse(gt_included_intl, yes, [ | |
106 | BUILD_INCLUDED_LIBINTL=no | |
107 | USE_INCLUDED_LIBINTL=no | |
108 | ]) | |
109 | LIBINTL= | |
110 | LTLIBINTL= | |
111 | POSUB= | |
112 | ||
113 | dnl Add a version number to the cache macros. | |
114 | case " $gt_needs " in | |
115 | *" need-formatstring-macros "*) gt_api_version=3 ;; | |
116 | *" need-ngettext "*) gt_api_version=2 ;; | |
117 | *) gt_api_version=1 ;; | |
118 | esac | |
119 | gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc" | |
120 | gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl" | |
121 | ||
122 | dnl If we use NLS figure out what method | |
123 | if test "$USE_NLS" = "yes"; then | |
124 | gt_use_preinstalled_gnugettext=no | |
125 | ifelse(gt_included_intl, yes, [ | |
126 | AC_MSG_CHECKING([whether included gettext is requested]) | |
127 | AC_ARG_WITH([included-gettext], | |
128 | [ --with-included-gettext use the GNU gettext library included here], | |
129 | nls_cv_force_use_gnu_gettext=$withval, | |
130 | nls_cv_force_use_gnu_gettext=no) | |
131 | AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext]) | |
132 | ||
133 | nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" | |
134 | if test "$nls_cv_force_use_gnu_gettext" != "yes"; then | |
135 | ]) | |
136 | dnl User does not insist on using GNU NLS library. Figure out what | |
137 | dnl to use. If GNU gettext is available we use this. Else we have | |
138 | dnl to fall back to GNU NLS library. | |
139 | ||
140 | if test $gt_api_version -ge 3; then | |
141 | gt_revision_test_code=' | |
142 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
143 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) | |
144 | #endif | |
145 | changequote(,)dnl | |
146 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; | |
147 | changequote([,])dnl | |
148 | ' | |
149 | else | |
150 | gt_revision_test_code= | |
151 | fi | |
152 | if test $gt_api_version -ge 2; then | |
153 | gt_expression_test_code=' + * ngettext ("", "", 0)' | |
154 | else | |
155 | gt_expression_test_code= | |
156 | fi | |
157 | ||
158 | AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc], | |
159 | [AC_LINK_IFELSE( | |
160 | [AC_LANG_PROGRAM( | |
161 | [[ | |
162 | #include <libintl.h> | |
163 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
164 | extern int _nl_msg_cat_cntr; | |
165 | extern int *_nl_domain_bindings; | |
166 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings) | |
167 | #else | |
168 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
169 | #endif | |
170 | $gt_revision_test_code | |
171 | ]], | |
172 | [[ | |
173 | bindtextdomain ("", ""); | |
174 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
175 | ]])], | |
176 | [eval "$gt_func_gnugettext_libc=yes"], | |
177 | [eval "$gt_func_gnugettext_libc=no"])]) | |
178 | ||
179 | if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then | |
180 | dnl Sometimes libintl requires libiconv, so first search for libiconv. | |
181 | ifelse(gt_included_intl, yes, , [ | |
182 | AM_ICONV_LINK | |
183 | ]) | |
184 | dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL | |
185 | dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) | |
186 | dnl because that would add "-liconv" to LIBINTL and LTLIBINTL | |
187 | dnl even if libiconv doesn't exist. | |
188 | AC_LIB_LINKFLAGS_BODY([intl]) | |
189 | AC_CACHE_CHECK([for GNU gettext in libintl], | |
190 | [$gt_func_gnugettext_libintl], | |
191 | [gt_save_CPPFLAGS="$CPPFLAGS" | |
192 | CPPFLAGS="$CPPFLAGS $INCINTL" | |
193 | gt_save_LIBS="$LIBS" | |
194 | LIBS="$LIBS $LIBINTL" | |
195 | dnl Now see whether libintl exists and does not depend on libiconv. | |
196 | AC_LINK_IFELSE( | |
197 | [AC_LANG_PROGRAM( | |
198 | [[ | |
199 | #include <libintl.h> | |
200 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
201 | extern int _nl_msg_cat_cntr; | |
202 | extern | |
203 | #ifdef __cplusplus | |
204 | "C" | |
205 | #endif | |
206 | const char *_nl_expand_alias (const char *); | |
207 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) | |
208 | #else | |
209 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
210 | #endif | |
211 | $gt_revision_test_code | |
212 | ]], | |
213 | [[ | |
214 | bindtextdomain ("", ""); | |
215 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
216 | ]])], | |
217 | [eval "$gt_func_gnugettext_libintl=yes"], | |
218 | [eval "$gt_func_gnugettext_libintl=no"]) | |
219 | dnl Now see whether libintl exists and depends on libiconv. | |
220 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then | |
221 | LIBS="$LIBS $LIBICONV" | |
222 | AC_LINK_IFELSE( | |
223 | [AC_LANG_PROGRAM( | |
224 | [[ | |
225 | #include <libintl.h> | |
226 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION | |
227 | extern int _nl_msg_cat_cntr; | |
228 | extern | |
229 | #ifdef __cplusplus | |
230 | "C" | |
231 | #endif | |
232 | const char *_nl_expand_alias (const char *); | |
233 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) | |
234 | #else | |
235 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 | |
236 | #endif | |
237 | $gt_revision_test_code | |
238 | ]], | |
239 | [[ | |
240 | bindtextdomain ("", ""); | |
241 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION | |
242 | ]])], | |
243 | [LIBINTL="$LIBINTL $LIBICONV" | |
244 | LTLIBINTL="$LTLIBINTL $LTLIBICONV" | |
245 | eval "$gt_func_gnugettext_libintl=yes" | |
246 | ]) | |
247 | fi | |
248 | CPPFLAGS="$gt_save_CPPFLAGS" | |
249 | LIBS="$gt_save_LIBS"]) | |
250 | fi | |
251 | ||
252 | dnl If an already present or preinstalled GNU gettext() is found, | |
253 | dnl use it. But if this macro is used in GNU gettext, and GNU | |
254 | dnl gettext is already preinstalled in libintl, we update this | |
255 | dnl libintl. (Cf. the install rule in intl/Makefile.in.) | |
256 | if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ | |
257 | || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ | |
258 | && test "$PACKAGE" != gettext-runtime \ | |
259 | && test "$PACKAGE" != gettext-tools; }; then | |
260 | gt_use_preinstalled_gnugettext=yes | |
261 | else | |
262 | dnl Reset the values set by searching for libintl. | |
263 | LIBINTL= | |
264 | LTLIBINTL= | |
265 | INCINTL= | |
266 | fi | |
267 | ||
268 | ifelse(gt_included_intl, yes, [ | |
269 | if test "$gt_use_preinstalled_gnugettext" != "yes"; then | |
270 | dnl GNU gettext is not found in the C library. | |
271 | dnl Fall back on included GNU gettext library. | |
272 | nls_cv_use_gnu_gettext=yes | |
273 | fi | |
274 | fi | |
275 | ||
276 | if test "$nls_cv_use_gnu_gettext" = "yes"; then | |
277 | dnl Mark actions used to generate GNU NLS library. | |
278 | BUILD_INCLUDED_LIBINTL=yes | |
279 | USE_INCLUDED_LIBINTL=yes | |
280 | LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD" | |
281 | LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD" | |
282 | LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` | |
283 | fi | |
284 | ||
285 | CATOBJEXT= | |
286 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
287 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
288 | dnl Mark actions to use GNU gettext tools. | |
289 | CATOBJEXT=.gmo | |
290 | fi | |
291 | ]) | |
292 | ||
293 | if test -n "$INTL_MACOSX_LIBS"; then | |
294 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
295 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
296 | dnl Some extra flags are needed during linking. | |
297 | LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" | |
298 | LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" | |
299 | fi | |
300 | fi | |
301 | ||
302 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ | |
303 | || test "$nls_cv_use_gnu_gettext" = "yes"; then | |
304 | AC_DEFINE([ENABLE_NLS], [1], | |
305 | [Define to 1 if translation of program messages to the user's native language | |
306 | is requested.]) | |
307 | else | |
308 | USE_NLS=no | |
309 | fi | |
310 | fi | |
311 | ||
312 | AC_MSG_CHECKING([whether to use NLS]) | |
313 | AC_MSG_RESULT([$USE_NLS]) | |
314 | if test "$USE_NLS" = "yes"; then | |
315 | AC_MSG_CHECKING([where the gettext function comes from]) | |
316 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then | |
317 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then | |
318 | gt_source="external libintl" | |
319 | else | |
320 | gt_source="libc" | |
321 | fi | |
322 | else | |
323 | gt_source="included intl directory" | |
324 | fi | |
325 | AC_MSG_RESULT([$gt_source]) | |
326 | fi | |
327 | ||
328 | if test "$USE_NLS" = "yes"; then | |
329 | ||
330 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then | |
331 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then | |
332 | AC_MSG_CHECKING([how to link with libintl]) | |
333 | AC_MSG_RESULT([$LIBINTL]) | |
334 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) | |
335 | fi | |
336 | ||
337 | dnl For backward compatibility. Some packages may be using this. | |
338 | AC_DEFINE([HAVE_GETTEXT], [1], | |
339 | [Define if the GNU gettext() function is already present or preinstalled.]) | |
340 | AC_DEFINE([HAVE_DCGETTEXT], [1], | |
341 | [Define if the GNU dcgettext() function is already present or preinstalled.]) | |
342 | fi | |
343 | ||
344 | dnl We need to process the po/ directory. | |
345 | POSUB=po | |
346 | fi | |
347 | ||
348 | ifelse(gt_included_intl, yes, [ | |
349 | dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL | |
350 | dnl to 'yes' because some of the testsuite requires it. | |
351 | if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then | |
352 | BUILD_INCLUDED_LIBINTL=yes | |
353 | fi | |
354 | ||
355 | dnl Make all variables we use known to autoconf. | |
356 | AC_SUBST([BUILD_INCLUDED_LIBINTL]) | |
357 | AC_SUBST([USE_INCLUDED_LIBINTL]) | |
358 | AC_SUBST([CATOBJEXT]) | |
359 | ||
360 | dnl For backward compatibility. Some configure.ins may be using this. | |
361 | nls_cv_header_intl= | |
362 | nls_cv_header_libgt= | |
363 | ||
364 | dnl For backward compatibility. Some Makefiles may be using this. | |
365 | DATADIRNAME=share | |
366 | AC_SUBST([DATADIRNAME]) | |
367 | ||
368 | dnl For backward compatibility. Some Makefiles may be using this. | |
369 | INSTOBJEXT=.mo | |
370 | AC_SUBST([INSTOBJEXT]) | |
371 | ||
372 | dnl For backward compatibility. Some Makefiles may be using this. | |
373 | GENCAT=gencat | |
374 | AC_SUBST([GENCAT]) | |
375 | ||
376 | dnl For backward compatibility. Some Makefiles may be using this. | |
377 | INTLOBJS= | |
378 | if test "$USE_INCLUDED_LIBINTL" = yes; then | |
379 | INTLOBJS="\$(GETTOBJS)" | |
380 | fi | |
381 | AC_SUBST([INTLOBJS]) | |
382 | ||
383 | dnl Enable libtool support if the surrounding package wishes it. | |
384 | INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix | |
385 | AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX]) | |
386 | ]) | |
387 | ||
388 | dnl For backward compatibility. Some Makefiles may be using this. | |
389 | INTLLIBS="$LIBINTL" | |
390 | AC_SUBST([INTLLIBS]) | |
391 | ||
392 | dnl Make all documented variables known to autoconf. | |
393 | AC_SUBST([LIBINTL]) | |
394 | AC_SUBST([LTLIBINTL]) | |
395 | AC_SUBST([POSUB]) | |
396 | ]) | |
397 | ||
398 | ||
399 | dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. | |
400 | m4_define([gt_NEEDS_INIT], | |
401 | [ | |
402 | m4_divert_text([DEFAULTS], [gt_needs=]) | |
403 | m4_define([gt_NEEDS_INIT], []) | |
404 | ]) | |
405 | ||
406 | ||
407 | dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) | |
408 | AC_DEFUN([AM_GNU_GETTEXT_NEED], | |
409 | [ | |
410 | m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) | |
411 | ]) | |
412 | ||
413 | ||
414 | dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) | |
415 | AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) | |
416 | ||
417 | ||
418 | dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version]) | |
419 | AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], []) |