source: trunk/src/grep/m4/gettext.m4@ 3685

Last change on this file since 3685 was 3529, checked in by bird, 4 years ago

Imported grep 3.7 from grep-3.7.tar.gz (sha256: c22b0cf2d4f6bbe599c902387e8058990e1eee99aef333a203829e5fd3dbb342), applying minimal auto-props.
  • Property svn:eol-style set to LF
File size: 14.9 KB
Line 
1# gettext.m4 serial 66 (gettext-0.18.2)
2dnl Copyright (C) 1995-2013 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6dnl
7dnl This file can can be used in projects which are not available under
8dnl the GNU General Public License or the GNU Library General Public
9dnl License but which still want to provide support for the GNU gettext
10dnl functionality.
11dnl Please note that the actual code of the GNU gettext library is covered
12dnl by the GNU Library General Public License, and the rest of the GNU
13dnl gettext package package is covered by the GNU General Public License.
14dnl They are *not* in the public domain.
15
16dnl Authors:
17dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
18dnl Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010.
19
20dnl Macro to add for using GNU gettext.
21
22dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
23dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
24dnl default (if it is not specified or empty) is 'no-libtool'.
25dnl INTLSYMBOL should be 'external' for packages with no intl directory,
26dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
27dnl If INTLSYMBOL is 'use-libtool', then a libtool library
28dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
29dnl depending on --{enable,disable}-{shared,static} and on the presence of
30dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
31dnl $(top_builddir)/intl/libintl.a will be created.
32dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
33dnl implementations (in libc or libintl) without the ngettext() function
34dnl will be ignored. If NEEDSYMBOL is specified and is
35dnl 'need-formatstring-macros', then GNU gettext implementations that don't
36dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
37dnl INTLDIR is used to find the intl libraries. If empty,
38dnl the value '$(top_builddir)/intl/' is used.
39dnl
40dnl The result of the configuration is one of three cases:
41dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
42dnl and used.
43dnl Catalog format: GNU --> install in $(datadir)
44dnl Catalog extension: .mo after installation, .gmo in source tree
45dnl 2) GNU gettext has been found in the system's C library.
46dnl Catalog format: GNU --> install in $(datadir)
47dnl Catalog extension: .mo after installation, .gmo in source tree
48dnl 3) No internationalization, always use English msgid.
49dnl Catalog format: none
50dnl Catalog extension: none
51dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
52dnl The use of .gmo is historical (it was needed to avoid overwriting the
53dnl GNU format catalogs when building on a platform with an X/Open gettext),
54dnl but we keep it in order not to force irrelevant filename changes on the
55dnl maintainers.
56dnl
57AC_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
146changequote(,)dnl
147typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
148changequote([,])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$gt_revision_test_code
165extern int _nl_msg_cat_cntr;
166extern int *_nl_domain_bindings;
167 ]],
168 [[
169bindtextdomain ("", "");
170return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings
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 $LIBINTL"
191 dnl Now see whether libintl exists and does not depend on libiconv.
192 AC_LINK_IFELSE(
193 [AC_LANG_PROGRAM(
194 [[
195#include <libintl.h>
196$gt_revision_test_code
197extern int _nl_msg_cat_cntr;
198extern
199#ifdef __cplusplus
200"C"
201#endif
202const char *_nl_expand_alias (const char *);
203 ]],
204 [[
205bindtextdomain ("", "");
206return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
207 ]])],
208 [eval "$gt_func_gnugettext_libintl=yes"],
209 [eval "$gt_func_gnugettext_libintl=no"])
210 dnl Now see whether libintl exists and depends on libiconv.
211 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
212 LIBS="$LIBS $LIBICONV"
213 AC_LINK_IFELSE(
214 [AC_LANG_PROGRAM(
215 [[
216#include <libintl.h>
217$gt_revision_test_code
218extern int _nl_msg_cat_cntr;
219extern
220#ifdef __cplusplus
221"C"
222#endif
223const char *_nl_expand_alias (const char *);
224 ]],
225 [[
226bindtextdomain ("", "");
227return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")
228 ]])],
229 [LIBINTL="$LIBINTL $LIBICONV"
230 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
231 eval "$gt_func_gnugettext_libintl=yes"
232 ])
233 fi
234 CPPFLAGS="$gt_save_CPPFLAGS"
235 LIBS="$gt_save_LIBS"])
236 fi
237
238 dnl If an already present or preinstalled GNU gettext() is found,
239 dnl use it. But if this macro is used in GNU gettext, and GNU
240 dnl gettext is already preinstalled in libintl, we update this
241 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
242 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
243 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
244 && test "$PACKAGE" != gettext-runtime \
245 && test "$PACKAGE" != gettext-tools; }; then
246 gt_use_preinstalled_gnugettext=yes
247 else
248 dnl Reset the values set by searching for libintl.
249 LIBINTL=
250 LTLIBINTL=
251 INCINTL=
252 fi
253
254 ifelse(gt_included_intl, yes, [
255 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
256 dnl GNU gettext is not found in the C library.
257 dnl Fall back on included GNU gettext library.
258 nls_cv_use_gnu_gettext=yes
259 fi
260 fi
261
262 if test "$nls_cv_use_gnu_gettext" = "yes"; then
263 dnl Mark actions used to generate GNU NLS library.
264 BUILD_INCLUDED_LIBINTL=yes
265 USE_INCLUDED_LIBINTL=yes
266 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
267 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
268 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
269 fi
270
271 CATOBJEXT=
272 if test "$gt_use_preinstalled_gnugettext" = "yes" \
273 || test "$nls_cv_use_gnu_gettext" = "yes"; then
274 dnl Mark actions to use GNU gettext tools.
275 CATOBJEXT=.gmo
276 fi
277 ])
278
279 if test -n "$INTL_MACOSX_LIBS"; then
280 if test "$gt_use_preinstalled_gnugettext" = "yes" \
281 || test "$nls_cv_use_gnu_gettext" = "yes"; then
282 dnl Some extra flags are needed during linking.
283 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
284 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
285 fi
286 fi
287
288 if test "$gt_use_preinstalled_gnugettext" = "yes" \
289 || test "$nls_cv_use_gnu_gettext" = "yes"; then
290 AC_DEFINE([ENABLE_NLS], [1],
291 [Define to 1 if translation of program messages to the user's native language
292 is requested.])
293 else
294 USE_NLS=no
295 fi
296 fi
297
298 AC_MSG_CHECKING([whether to use NLS])
299 AC_MSG_RESULT([$USE_NLS])
300 if test "$USE_NLS" = "yes"; then
301 AC_MSG_CHECKING([where the gettext function comes from])
302 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
303 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
304 gt_source="external libintl"
305 else
306 gt_source="libc"
307 fi
308 else
309 gt_source="included intl directory"
310 fi
311 AC_MSG_RESULT([$gt_source])
312 fi
313
314 if test "$USE_NLS" = "yes"; then
315
316 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
317 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
318 AC_MSG_CHECKING([how to link with libintl])
319 AC_MSG_RESULT([$LIBINTL])
320 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
321 fi
322
323 dnl For backward compatibility. Some packages may be using this.
324 AC_DEFINE([HAVE_GETTEXT], [1],
325 [Define if the GNU gettext() function is already present or preinstalled.])
326 AC_DEFINE([HAVE_DCGETTEXT], [1],
327 [Define if the GNU dcgettext() function is already present or preinstalled.])
328 fi
329
330 dnl We need to process the po/ directory.
331 POSUB=po
332 fi
333
334 ifelse(gt_included_intl, yes, [
335 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
336 dnl to 'yes' because some of the testsuite requires it.
337 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
338 BUILD_INCLUDED_LIBINTL=yes
339 fi
340
341 dnl Make all variables we use known to autoconf.
342 AC_SUBST([BUILD_INCLUDED_LIBINTL])
343 AC_SUBST([USE_INCLUDED_LIBINTL])
344 AC_SUBST([CATOBJEXT])
345
346 dnl For backward compatibility. Some configure.ins may be using this.
347 nls_cv_header_intl=
348 nls_cv_header_libgt=
349
350 dnl For backward compatibility. Some Makefiles may be using this.
351 DATADIRNAME=share
352 AC_SUBST([DATADIRNAME])
353
354 dnl For backward compatibility. Some Makefiles may be using this.
355 INSTOBJEXT=.mo
356 AC_SUBST([INSTOBJEXT])
357
358 dnl For backward compatibility. Some Makefiles may be using this.
359 GENCAT=gencat
360 AC_SUBST([GENCAT])
361
362 dnl For backward compatibility. Some Makefiles may be using this.
363 INTLOBJS=
364 if test "$USE_INCLUDED_LIBINTL" = yes; then
365 INTLOBJS="\$(GETTOBJS)"
366 fi
367 AC_SUBST([INTLOBJS])
368
369 dnl Enable libtool support if the surrounding package wishes it.
370 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
371 AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX])
372 ])
373
374 dnl For backward compatibility. Some Makefiles may be using this.
375 INTLLIBS="$LIBINTL"
376 AC_SUBST([INTLLIBS])
377
378 dnl Make all documented variables known to autoconf.
379 AC_SUBST([LIBINTL])
380 AC_SUBST([LTLIBINTL])
381 AC_SUBST([POSUB])
382])
383
384
385dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
386m4_define([gt_NEEDS_INIT],
387[
388 m4_divert_text([DEFAULTS], [gt_needs=])
389 m4_define([gt_NEEDS_INIT], [])
390])
391
392
393dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
394AC_DEFUN([AM_GNU_GETTEXT_NEED],
395[
396 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
397])
398
399
400dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
401AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
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