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comparison config/gettext.m4 @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 # gettext.m4 serial 20 (gettext-0.12)
2 dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
3 dnl This file is free software, distributed under the terms of the GNU
4 dnl General Public License. As a special exception to the GNU General
5 dnl Public License, this file may be distributed as part of a program
6 dnl that contains a configuration script generated by Autoconf, under
7 dnl the same distribution terms as the rest of that program.
8 dnl
9 dnl This file can can be used in projects which are not available under
10 dnl the GNU General Public License or the GNU Library General Public
11 dnl License but which still want to provide support for the GNU gettext
12 dnl functionality.
13 dnl Please note that the actual code of the GNU gettext library is covered
14 dnl by the GNU Library General Public License, and the rest of the GNU
15 dnl gettext package package is covered by the GNU General Public License.
16 dnl They are *not* in the public domain.
17
18 dnl Authors:
19 dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
20 dnl Bruno Haible <haible@clisp.cons.org>, 2000-2003.
21
22 dnl Macro to add for using GNU gettext.
23
24 dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
25 dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
26 dnl default (if it is not specified or empty) is 'no-libtool'.
27 dnl INTLSYMBOL should be 'external' for packages with no intl directory,
28 dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
29 dnl If INTLSYMBOL is 'use-libtool', then a libtool library
30 dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
31 dnl depending on --{enable,disable}-{shared,static} and on the presence of
32 dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
33 dnl $(top_builddir)/intl/libintl.a will be created.
34 dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
35 dnl implementations (in libc or libintl) without the ngettext() function
36 dnl will be ignored. If NEEDSYMBOL is specified and is
37 dnl 'need-formatstring-macros', then GNU gettext implementations that don't
38 dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
39 dnl INTLDIR is used to find the intl libraries. If empty,
40 dnl the value `$(top_builddir)/intl/' is used.
41 dnl
42 dnl The result of the configuration is one of three cases:
43 dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
44 dnl and used.
45 dnl Catalog format: GNU --> install in $(datadir)
46 dnl Catalog extension: .mo after installation, .gmo in source tree
47 dnl 2) GNU gettext has been found in the system's C library.
48 dnl Catalog format: GNU --> install in $(datadir)
49 dnl Catalog extension: .mo after installation, .gmo in source tree
50 dnl 3) No internationalization, always use English msgid.
51 dnl Catalog format: none
52 dnl Catalog extension: none
53 dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
54 dnl The use of .gmo is historical (it was needed to avoid overwriting the
55 dnl GNU format catalogs when building on a platform with an X/Open gettext),
56 dnl but we keep it in order not to force irrelevant filename changes on the
57 dnl maintainers.
58 dnl
59 AC_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 "$gt_cv_func_gnugettext_libc" != "yes"; then
84 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
85 dnl the configure script would need to contain the same shell code
86 dnl again, outside any 'if'. There are two solutions:
87 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
88 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
89 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
90 dnl documented, we avoid it.
91 ifelse(gt_included_intl, yes, , [
92 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
93 ])
94
95 dnl Set USE_NLS.
96 AM_NLS
97
98 ifelse(gt_included_intl, yes, [
99 BUILD_INCLUDED_LIBINTL=no
100 USE_INCLUDED_LIBINTL=no
101 ])
102 LIBINTL=
103 LTLIBINTL=
104 POSUB=
105
106 dnl If we use NLS figure out what method
107 if test "$USE_NLS" = "yes"; then
108 gt_use_preinstalled_gnugettext=no
109 ifelse(gt_included_intl, yes, [
110 AC_MSG_CHECKING([whether included gettext is requested])
111 AC_ARG_WITH(included-gettext,
112 [ --with-included-gettext use the GNU gettext library included here],
113 nls_cv_force_use_gnu_gettext=$withval,
114 nls_cv_force_use_gnu_gettext=no)
115 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
116
117 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
118 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
119 ])
120 dnl User does not insist on using GNU NLS library. Figure out what
121 dnl to use. If GNU gettext is available we use this. Else we have
122 dnl to fall back to GNU NLS library.
123
124 dnl Add a version number to the cache macros.
125 define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
126 define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
127 define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
128
129 AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
130 [AC_TRY_LINK([#include <libintl.h>
131 ]ifelse([$2], [need-formatstring-macros],
132 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
133 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
134 #endif
135 changequote(,)dnl
136 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
137 changequote([,])dnl
138 ], [])[extern int _nl_msg_cat_cntr;
139 extern int *_nl_domain_bindings;],
140 [bindtextdomain ("", "");
141 return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings],
142 gt_cv_func_gnugettext_libc=yes,
143 gt_cv_func_gnugettext_libc=no)])
144
145 if test "$gt_cv_func_gnugettext_libc" != "yes"; then
146 dnl Sometimes libintl requires libiconv, so first search for libiconv.
147 ifelse(gt_included_intl, yes, , [
148 AM_ICONV_LINK
149 ])
150 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
151 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
152 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
153 dnl even if libiconv doesn't exist.
154 AC_LIB_LINKFLAGS_BODY([intl])
155 AC_CACHE_CHECK([for GNU gettext in libintl],
156 gt_cv_func_gnugettext_libintl,
157 [gt_save_CPPFLAGS="$CPPFLAGS"
158 CPPFLAGS="$CPPFLAGS $INCINTL"
159 gt_save_LIBS="$LIBS"
160 LIBS="$LIBS $LIBINTL"
161 dnl Now see whether libintl exists and does not depend on libiconv.
162 AC_TRY_LINK([#include <libintl.h>
163 ]ifelse([$2], [need-formatstring-macros],
164 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
165 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
166 #endif
167 changequote(,)dnl
168 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
169 changequote([,])dnl
170 ], [])[extern int _nl_msg_cat_cntr;
171 extern
172 #ifdef __cplusplus
173 "C"
174 #endif
175 const char *_nl_expand_alias ();],
176 [bindtextdomain ("", "");
177 return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)],
178 gt_cv_func_gnugettext_libintl=yes,
179 gt_cv_func_gnugettext_libintl=no)
180 dnl Now see whether libintl exists and depends on libiconv.
181 if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
182 LIBS="$LIBS $LIBICONV"
183 AC_TRY_LINK([#include <libintl.h>
184 ]ifelse([$2], [need-formatstring-macros],
185 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
186 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
187 #endif
188 changequote(,)dnl
189 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
190 changequote([,])dnl
191 ], [])[extern int _nl_msg_cat_cntr;
192 extern
193 #ifdef __cplusplus
194 "C"
195 #endif
196 const char *_nl_expand_alias ();],
197 [bindtextdomain ("", "");
198 return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)],
199 [LIBINTL="$LIBINTL $LIBICONV"
200 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
201 gt_cv_func_gnugettext_libintl=yes
202 ])
203 fi
204 CPPFLAGS="$gt_save_CPPFLAGS"
205 LIBS="$gt_save_LIBS"])
206 fi
207
208 dnl If an already present or preinstalled GNU gettext() is found,
209 dnl use it. But if this macro is used in GNU gettext, and GNU
210 dnl gettext is already preinstalled in libintl, we update this
211 dnl libintl. (Cf. the install rule in intl/Makefile.in.)
212 if test "$gt_cv_func_gnugettext_libc" = "yes" \
213 || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
214 && test "$PACKAGE" != gettext-runtime \
215 && test "$PACKAGE" != gettext-tools; }; then
216 gt_use_preinstalled_gnugettext=yes
217 else
218 dnl Reset the values set by searching for libintl.
219 LIBINTL=
220 LTLIBINTL=
221 INCINTL=
222 fi
223
224 ifelse(gt_included_intl, yes, [
225 if test "$gt_use_preinstalled_gnugettext" != "yes"; then
226 dnl GNU gettext is not found in the C library.
227 dnl Fall back on included GNU gettext library.
228 nls_cv_use_gnu_gettext=yes
229 fi
230 fi
231
232 if test "$nls_cv_use_gnu_gettext" = "yes"; then
233 dnl Mark actions used to generate GNU NLS library.
234 BUILD_INCLUDED_LIBINTL=yes
235 USE_INCLUDED_LIBINTL=yes
236 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV"
237 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV"
238 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
239 fi
240
241 if test "$gt_use_preinstalled_gnugettext" = "yes" \
242 || test "$nls_cv_use_gnu_gettext" = "yes"; then
243 dnl Mark actions to use GNU gettext tools.
244 CATOBJEXT=.gmo
245 fi
246 ])
247
248 if test "$gt_use_preinstalled_gnugettext" = "yes" \
249 || test "$nls_cv_use_gnu_gettext" = "yes"; then
250 AC_DEFINE(ENABLE_NLS, 1,
251 [Define to 1 if translation of program messages to the user's native language
252 is requested.])
253 else
254 USE_NLS=no
255 fi
256 fi
257
258 AC_MSG_CHECKING([whether to use NLS])
259 AC_MSG_RESULT([$USE_NLS])
260 if test "$USE_NLS" = "yes"; then
261 AC_MSG_CHECKING([where the gettext function comes from])
262 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
263 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
264 gt_source="external libintl"
265 else
266 gt_source="libc"
267 fi
268 else
269 gt_source="included intl directory"
270 fi
271 AC_MSG_RESULT([$gt_source])
272 fi
273
274 if test "$USE_NLS" = "yes"; then
275
276 if test "$gt_use_preinstalled_gnugettext" = "yes"; then
277 if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
278 AC_MSG_CHECKING([how to link with libintl])
279 AC_MSG_RESULT([$LIBINTL])
280 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
281 fi
282
283 dnl For backward compatibility. Some packages may be using this.
284 AC_DEFINE(HAVE_GETTEXT, 1,
285 [Define if the GNU gettext() function is already present or preinstalled.])
286 AC_DEFINE(HAVE_DCGETTEXT, 1,
287 [Define if the GNU dcgettext() function is already present or preinstalled.])
288 fi
289
290 dnl We need to process the po/ directory.
291 POSUB=po
292 fi
293
294 ifelse(gt_included_intl, yes, [
295 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
296 dnl to 'yes' because some of the testsuite requires it.
297 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
298 BUILD_INCLUDED_LIBINTL=yes
299 fi
300
301 dnl Make all variables we use known to autoconf.
302 AC_SUBST(BUILD_INCLUDED_LIBINTL)
303 AC_SUBST(USE_INCLUDED_LIBINTL)
304 AC_SUBST(CATOBJEXT)
305
306 dnl For backward compatibility. Some configure.ins may be using this.
307 nls_cv_header_intl=
308 nls_cv_header_libgt=
309
310 dnl For backward compatibility. Some Makefiles may be using this.
311 DATADIRNAME=share
312 AC_SUBST(DATADIRNAME)
313
314 dnl For backward compatibility. Some Makefiles may be using this.
315 INSTOBJEXT=.mo
316 AC_SUBST(INSTOBJEXT)
317
318 dnl For backward compatibility. Some Makefiles may be using this.
319 GENCAT=gencat
320 AC_SUBST(GENCAT)
321
322 dnl For backward compatibility. Some Makefiles may be using this.
323 if test "$USE_INCLUDED_LIBINTL" = yes; then
324 INTLOBJS="\$(GETTOBJS)"
325 fi
326 AC_SUBST(INTLOBJS)
327
328 dnl Enable libtool support if the surrounding package wishes it.
329 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
330 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
331 ])
332
333 dnl For backward compatibility. Some Makefiles may be using this.
334 INTLLIBS="$LIBINTL"
335 AC_SUBST(INTLLIBS)
336
337 dnl Make all documented variables known to autoconf.
338 AC_SUBST(LIBINTL)
339 AC_SUBST(LTLIBINTL)
340 AC_SUBST(POSUB)
341 ])
342
343
344 dnl Checks for all prerequisites of the intl subdirectory,
345 dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
346 dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
347 AC_DEFUN([AM_INTL_SUBDIR],
348 [
349 AC_REQUIRE([AC_PROG_INSTALL])dnl
350 AC_REQUIRE([AM_MKINSTALLDIRS])dnl
351 AC_REQUIRE([AC_PROG_CC])dnl
352 AC_REQUIRE([AC_CANONICAL_HOST])dnl
353 AC_REQUIRE([AC_PROG_RANLIB])dnl
354 AC_REQUIRE([AC_ISC_POSIX])dnl
355 AC_REQUIRE([AC_HEADER_STDC])dnl
356 AC_REQUIRE([AC_C_CONST])dnl
357 AC_REQUIRE([AC_C_INLINE])dnl
358 AC_REQUIRE([AC_TYPE_OFF_T])dnl
359 AC_REQUIRE([AC_TYPE_SIZE_T])dnl
360 AC_REQUIRE([AC_FUNC_ALLOCA])dnl
361 AC_REQUIRE([AC_FUNC_MMAP])dnl
362 AC_REQUIRE([jm_GLIBC21])dnl
363 AC_REQUIRE([gt_INTDIV0])dnl
364 AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])dnl
365 AC_REQUIRE([gt_HEADER_INTTYPES_H])dnl
366 AC_REQUIRE([gt_INTTYPES_PRI])dnl
367
368 AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
369 stdlib.h string.h unistd.h sys/param.h])
370 AC_CHECK_FUNCS([feof_unlocked fgets_unlocked getc_unlocked getcwd getegid \
371 geteuid getgid getuid mempcpy munmap putenv setenv setlocale stpcpy \
372 strcasecmp strdup strtoul tsearch __argz_count __argz_stringify __argz_next \
373 __fsetlocking])
374
375 AM_ICONV
376 AM_LANGINFO_CODESET
377 if test $ac_cv_header_locale_h = yes; then
378 AM_LC_MESSAGES
379 fi
380
381 dnl intl/plural.c is generated from intl/plural.y. It requires bison,
382 dnl because plural.y uses bison specific features. It requires at least
383 dnl bison-1.26 because earlier versions generate a plural.c that doesn't
384 dnl compile.
385 dnl bison is only needed for the maintainer (who touches plural.y). But in
386 dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
387 dnl the rule in general Makefile. Now, some people carelessly touch the
388 dnl files or have a broken "make" program, hence the plural.c rule will
389 dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
390 dnl present or too old.
391 AC_CHECK_PROGS([INTLBISON], [bison])
392 if test -z "$INTLBISON"; then
393 ac_verc_fail=yes
394 else
395 dnl Found it, now check the version.
396 AC_MSG_CHECKING([version of bison])
397 changequote(<<,>>)dnl
398 ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
399 case $ac_prog_version in
400 '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
401 1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
402 changequote([,])dnl
403 ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
404 *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
405 esac
406 AC_MSG_RESULT([$ac_prog_version])
407 fi
408 if test $ac_verc_fail = yes; then
409 INTLBISON=:
410 fi
411 ])
412
413
414 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
415 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])