source: trunk/essentials/app-arch/cpio/m4/gettext_gl.m4

Last change on this file was 3332, checked in by bird, 18 years ago

cpio 2.7

File size: 16.8 KB
Line 
1# gettext.m4 serial 53.1
2dnl Copyright (C) 1995-2006 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>, 2000-2005.
19
20AC_PREREQ(2.52)
21
22dnl Macro to add for using GNU gettext.
23
24dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
25dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
26dnl default (if it is not specified or empty) is 'no-libtool'.
27dnl INTLSYMBOL should be 'external' for packages with no intl directory,
28dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
29dnl If INTLSYMBOL is 'use-libtool', then a libtool library
30dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
31dnl depending on --{enable,disable}-{shared,static} and on the presence of
32dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
33dnl $(top_builddir)/intl/libintl.a will be created.
34dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
35dnl implementations (in libc or libintl) without the ngettext() function
36dnl will be ignored. If NEEDSYMBOL is specified and is
37dnl 'need-formatstring-macros', then GNU gettext implementations that don't
38dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
39dnl INTLDIR is used to find the intl libraries. If empty,
40dnl the value `$(top_builddir)/intl/' is used.
41dnl
42dnl The result of the configuration is one of three cases:
43dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
44dnl and used.
45dnl Catalog format: GNU --> install in $(datadir)
46dnl Catalog extension: .mo after installation, .gmo in source tree
47dnl 2) GNU gettext has been found in the system's C library.
48dnl Catalog format: GNU --> install in $(datadir)
49dnl Catalog extension: .mo after installation, .gmo in source tree
50dnl 3) No internationalization, always use English msgid.
51dnl Catalog format: none
52dnl Catalog extension: none
53dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
54dnl The use of .gmo is historical (it was needed to avoid overwriting the
55dnl GNU format catalogs when building on a platform with an X/Open gettext),
56dnl but we keep it in order not to force irrelevant filename changes on the
57dnl maintainers.
58dnl
59AC_DEFUN([AM_GNU_GETTEXT],
60[
61 dnl Argument checking.
62 ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
63 [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
64])])])])])
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], ifelse([$1], [external], [no], [yes]))
69 define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
70
71 AC_REQUIRE([AM_PO_SUBDIRS])dnl
72 ifelse(gt_included_intl, yes, [
73 AC_REQUIRE([AM_INTL_SUBDIR])dnl
74 ])
75
76 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
77 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
78 AC_REQUIRE([AC_LIB_RPATH])
79
80 dnl Sometimes libintl requires libiconv, so first search for libiconv.
81 dnl Ideally we would do this search only after the
82 dnl if test "$USE_NLS" = "yes"; then
83 dnl if test "$gt_cv_func_gnugettext_libc" != "yes"; then
84 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
85 dnl the configure script would need to contain the same shell code
86 dnl again, outside any 'if'. There are two solutions:
87 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
88 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
89 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
90 dnl documented, we avoid it.
91 ifelse(gt_included_intl, yes, , [
92 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
93 ])
94
95 dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
96 gt_INTL_MACOSX
97
98 dnl Set USE_NLS.
99 AC_REQUIRE([AM_NLS])
100
101 ifelse(gt_included_intl, yes, [
102 BUILD_INCLUDED_LIBINTL=no
103 USE_INCLUDED_LIBINTL=no
104 ])
105 LIBINTL=
106 LTLIBINTL=
107 POSUB=
108
109 dnl If we use NLS figure out what method
110 if test "$USE_NLS" = "yes"; then
111 gt_use_preinstalled_gnugettext=no
112 ifelse(gt_included_intl, yes, [
113 AC_MSG_CHECKING([whether included gettext is requested])
114 AC_ARG_WITH(included-gettext,
115 [ --with-included-gettext use the GNU gettext library included here],
116 nls_cv_force_use_gnu_gettext=$withval,
117 nls_cv_force_use_gnu_gettext=no)
118 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
119
120 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
121 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
122 ])
123 dnl User does not insist on using GNU NLS library. Figure out what
124 dnl to use. If GNU gettext is available we use this. Else we have
125 dnl to fall back to GNU NLS library.
126
127 dnl Add a version number to the cache macros.
128 define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
129 define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
130 define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
131
132 AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
133 [AC_TRY_LINK([#include <libintl.h>
134]ifelse([$2], [need-formatstring-macros],
135[[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
136#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
137#endif
138typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
139]], [])[extern int _nl_msg_cat_cntr;
140extern int *_nl_domain_bindings;],
141 [bindtextdomain ("", "");
142return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings],
143 gt_cv_func_gnugettext_libc=yes,
144 gt_cv_func_gnugettext_libc=no)])
145
146 if test "$gt_cv_func_gnugettext_libc" != "yes"; then
147 dnl Sometimes libintl requires libiconv, so first search for libiconv.
148 ifelse(gt_included_intl, yes, , [
149 AM_ICONV_LINK
150 ])
151 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
152 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
153 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
154 dnl even if libiconv doesn't exist.
155 AC_LIB_LINKFLAGS_BODY([intl])
156 AC_CACHE_CHECK([for GNU gettext in libintl],
157 gt_cv_func_gnugettext_libintl,
158 [gt_save_CPPFLAGS="$CPPFLAGS"
159 CPPFLAGS="$CPPFLAGS $INCINTL"
160 gt_save_LIBS="$LIBS"
161 LIBS="$LIBS $LIBINTL"
162 dnl Now see whether libintl exists and does not depend on libiconv.
163 AC_TRY_LINK([#include <libintl.h>
164]ifelse([$2], [need-formatstring-macros],
165[[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
166#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
167#endif
168typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
169]], [])[extern int _nl_msg_cat_cntr;
170extern
171#ifdef __cplusplus
172"C"
173#endif
174const char *_nl_expand_alias (const char *);],
175 [bindtextdomain ("", "");
176return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
177 gt_cv_func_gnugettext_libintl=yes,
178 gt_cv_func_gnugettext_libintl=no)
179 dnl Now see whether libintl exists and depends on libiconv.
180 if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
181 LIBS="$LIBS $LIBICONV"
182 AC_TRY_LINK([#include <libintl.h>
183]ifelse([$2], [need-formatstring-macros],
184[[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
185#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
186#endif
187typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
188]], [])[extern int _nl_msg_cat_cntr;
189extern
190#ifdef __cplusplus
191"C"
192#endif
193const char *_nl_expand_alias (const char *);],
194 [bindtextdomain ("", "");
195return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
196 [LIBINTL="$LIBINTL $LIBICONV"
197 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
198 gt_cv_func_gnugettext_libintl=yes
199 ])
200 fi
201 CPPFLAGS="$gt_save_CPPFLAGS"
202 LIBS="$gt_save_LIBS"])
203 fi
204
205 dnl If an already present or preinstalled GNU gettext() is found,
206 dnl use it. But if this macro is used in GNU gettext, and GNU
207 dnl gettext is already preinstalled in libintl, we update this
208 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
209 if test "$gt_cv_func_gnugettext_libc" = "yes" \
210 || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
211 && test "$PACKAGE" != gettext-runtime \
212 && test "$PACKAGE" != gettext-tools; }; then
213 gt_use_preinstalled_gnugettext=yes
214 else
215 dnl Reset the values set by searching for libintl.
216 LIBINTL=
217 LTLIBINTL=
218 INCINTL=
219 fi
220
221 ifelse(gt_included_intl, yes, [
222 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
223 dnl GNU gettext is not found in the C library.
224 dnl Fall back on included GNU gettext library.
225 nls_cv_use_gnu_gettext=yes
226 fi
227 fi
228
229 if test "$nls_cv_use_gnu_gettext" = "yes"; then
230 dnl Mark actions used to generate GNU NLS library.
231 BUILD_INCLUDED_LIBINTL=yes
232 USE_INCLUDED_LIBINTL=yes
233 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
234 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
235 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
236 fi
237
238 CATOBJEXT=
239 if test "$gt_use_preinstalled_gnugettext" = "yes" \
240 || test "$nls_cv_use_gnu_gettext" = "yes"; then
241 dnl Mark actions to use GNU gettext tools.
242 CATOBJEXT=.gmo
243 fi
244 ])
245
246 if test -n "$INTL_MACOSX_LIBS"; then
247 if test "$gt_use_preinstalled_gnugettext" = "yes" \
248 || test "$nls_cv_use_gnu_gettext" = "yes"; then
249 dnl Some extra flags are needed during linking.
250 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
251 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
252 fi
253 fi
254
255 if test "$gt_use_preinstalled_gnugettext" = "yes" \
256 || test "$nls_cv_use_gnu_gettext" = "yes"; then
257 AC_DEFINE(ENABLE_NLS, 1,
258 [Define to 1 if translation of program messages to the user's native language
259 is requested.])
260 else
261 USE_NLS=no
262 fi
263 fi
264
265 AC_MSG_CHECKING([whether to use NLS])
266 AC_MSG_RESULT([$USE_NLS])
267 if test "$USE_NLS" = "yes"; then
268 AC_MSG_CHECKING([where the gettext function comes from])
269 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
270 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
271 gt_source="external libintl"
272 else
273 gt_source="libc"
274 fi
275 else
276 gt_source="included intl directory"
277 fi
278 AC_MSG_RESULT([$gt_source])
279 fi
280
281 if test "$USE_NLS" = "yes"; then
282
283 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
284 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
285 AC_MSG_CHECKING([how to link with libintl])
286 AC_MSG_RESULT([$LIBINTL])
287 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
288 fi
289
290 dnl For backward compatibility. Some packages may be using this.
291 AC_DEFINE(HAVE_GETTEXT, 1,
292 [Define if the GNU gettext() function is already present or preinstalled.])
293 AC_DEFINE(HAVE_DCGETTEXT, 1,
294 [Define if the GNU dcgettext() function is already present or preinstalled.])
295 fi
296
297 dnl We need to process the po/ directory.
298 POSUB=po
299 fi
300
301 ifelse(gt_included_intl, yes, [
302 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
303 dnl to 'yes' because some of the testsuite requires it.
304 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
305 BUILD_INCLUDED_LIBINTL=yes
306 fi
307
308 dnl Make all variables we use known to autoconf.
309 AC_SUBST(BUILD_INCLUDED_LIBINTL)
310 AC_SUBST(USE_INCLUDED_LIBINTL)
311 AC_SUBST(CATOBJEXT)
312
313 dnl For backward compatibility. Some configure.ins may be using this.
314 nls_cv_header_intl=
315 nls_cv_header_libgt=
316
317 dnl For backward compatibility. Some Makefiles may be using this.
318 DATADIRNAME=share
319 AC_SUBST(DATADIRNAME)
320
321 dnl For backward compatibility. Some Makefiles may be using this.
322 INSTOBJEXT=.mo
323 AC_SUBST(INSTOBJEXT)
324
325 dnl For backward compatibility. Some Makefiles may be using this.
326 GENCAT=gencat
327 AC_SUBST(GENCAT)
328
329 dnl For backward compatibility. Some Makefiles may be using this.
330 INTLOBJS=
331 if test "$USE_INCLUDED_LIBINTL" = yes; then
332 INTLOBJS="\$(GETTOBJS)"
333 fi
334 AC_SUBST(INTLOBJS)
335
336 dnl Enable libtool support if the surrounding package wishes it.
337 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
338 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
339 ])
340
341 dnl For backward compatibility. Some Makefiles may be using this.
342 INTLLIBS="$LIBINTL"
343 AC_SUBST(INTLLIBS)
344
345 dnl Make all documented variables known to autoconf.
346 AC_SUBST(LIBINTL)
347 AC_SUBST(LTLIBINTL)
348 AC_SUBST(POSUB)
349])
350
351
352dnl Checks for all prerequisites of the intl subdirectory,
353dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
354dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
355 AC_DEFUN([AM_INTL_SUBDIR], [])
356])
357
358
359dnl Checks for the core files of the intl subdirectory:
360dnl dcigettext.c
361dnl eval-plural.h
362dnl explodename.c
363dnl finddomain.c
364dnl gettextP.h
365dnl gmo.h
366dnl hash-string.h hash-string.c
367dnl l10nflist.c
368dnl libgnuintl.h.in (except the *printf stuff)
369dnl loadinfo.h
370dnl loadmsgcat.c
371dnl localealias.c
372dnl log.c
373dnl plural-exp.h plural-exp.c
374dnl plural.y
375dnl Used by libglocale.
376 AC_DEFUN([gt_INTL_SUBDIR_CORE], [])
377
378
379dnl Checks for special options needed on MacOS X.
380dnl Defines INTL_MACOSX_LIBS.
381AC_DEFUN([gt_INTL_MACOSX],
382[
383 dnl Check for API introduced in MacOS X 10.2.
384 AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
385 gt_cv_func_CFPreferencesCopyAppValue,
386 [gt_save_LIBS="$LIBS"
387 LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
388 AC_TRY_LINK([#include <CoreFoundation/CFPreferences.h>],
389 [CFPreferencesCopyAppValue(NULL, NULL)],
390 [gt_cv_func_CFPreferencesCopyAppValue=yes],
391 [gt_cv_func_CFPreferencesCopyAppValue=no])
392 LIBS="$gt_save_LIBS"])
393 if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
394 AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], 1,
395 [Define to 1 if you have the MacOS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
396 fi
397 dnl Check for API introduced in MacOS X 10.3.
398 AC_CACHE_CHECK([for CFLocaleCopyCurrent], gt_cv_func_CFLocaleCopyCurrent,
399 [gt_save_LIBS="$LIBS"
400 LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
401 AC_TRY_LINK([#include <CoreFoundation/CFLocale.h>], [CFLocaleCopyCurrent();],
402 [gt_cv_func_CFLocaleCopyCurrent=yes],
403 [gt_cv_func_CFLocaleCopyCurrent=no])
404 LIBS="$gt_save_LIBS"])
405 if test $gt_cv_func_CFLocaleCopyCurrent = yes; then
406 AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], 1,
407 [Define to 1 if you have the MacOS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
408 fi
409 INTL_MACOSX_LIBS=
410 if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then
411 INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
412 fi
413 AC_SUBST([INTL_MACOSX_LIBS])
414])
415
416
417dnl gt_CHECK_DECL(FUNC, INCLUDES)
418dnl Check whether a function is declared.
419AC_DEFUN([gt_CHECK_DECL],
420[
421 AC_CACHE_CHECK([whether $1 is declared], ac_cv_have_decl_$1,
422 [AC_TRY_COMPILE([$2], [
423#ifndef $1
424 char *p = (char *) $1;
425#endif
426], ac_cv_have_decl_$1=yes, ac_cv_have_decl_$1=no)])
427 if test $ac_cv_have_decl_$1 = yes; then
428 gt_value=1
429 else
430 gt_value=0
431 fi
432 AC_DEFINE_UNQUOTED([HAVE_DECL_]translit($1, [a-z], [A-Z]), [$gt_value],
433 [Define to 1 if you have the declaration of `$1', and to 0 if you don't.])
434])
435
436
437dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
438AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
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