source: projects/proc-rpmnew/trunk/m4/gettext.m4 @ 4548

Revision 4548, 14.6 KB checked in by yasumichi, 11 years ago (diff)

add m4 directory.

Line 
1# gettext.m4 serial 63 (gettext-0.18)
2dnl Copyright (C) 1995-2010 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 MacOS 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_TRY_LINK([#include <libintl.h>
161$gt_revision_test_code
162extern int _nl_msg_cat_cntr;
163extern int *_nl_domain_bindings;],
164            [bindtextdomain ("", "");
165return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings],
166            [eval "$gt_func_gnugettext_libc=yes"],
167            [eval "$gt_func_gnugettext_libc=no"])])
168
169        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
170          dnl Sometimes libintl requires libiconv, so first search for libiconv.
171          ifelse(gt_included_intl, yes, , [
172            AM_ICONV_LINK
173          ])
174          dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
175          dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
176          dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
177          dnl even if libiconv doesn't exist.
178          AC_LIB_LINKFLAGS_BODY([intl])
179          AC_CACHE_CHECK([for GNU gettext in libintl],
180            [$gt_func_gnugettext_libintl],
181           [gt_save_CPPFLAGS="$CPPFLAGS"
182            CPPFLAGS="$CPPFLAGS $INCINTL"
183            gt_save_LIBS="$LIBS"
184            LIBS="$LIBS $LIBINTL"
185            dnl Now see whether libintl exists and does not depend on libiconv.
186            AC_TRY_LINK([#include <libintl.h>
187$gt_revision_test_code
188extern int _nl_msg_cat_cntr;
189extern
190#ifdef __cplusplus
191"C"
192#endif
193const char *_nl_expand_alias (const char *);],
194              [bindtextdomain ("", "");
195return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
196              [eval "$gt_func_gnugettext_libintl=yes"],
197              [eval "$gt_func_gnugettext_libintl=no"])
198            dnl Now see whether libintl exists and depends on libiconv.
199            if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
200              LIBS="$LIBS $LIBICONV"
201              AC_TRY_LINK([#include <libintl.h>
202$gt_revision_test_code
203extern int _nl_msg_cat_cntr;
204extern
205#ifdef __cplusplus
206"C"
207#endif
208const char *_nl_expand_alias (const char *);],
209                [bindtextdomain ("", "");
210return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
211               [LIBINTL="$LIBINTL $LIBICONV"
212                LTLIBINTL="$LTLIBINTL $LTLIBICONV"
213                eval "$gt_func_gnugettext_libintl=yes"
214               ])
215            fi
216            CPPFLAGS="$gt_save_CPPFLAGS"
217            LIBS="$gt_save_LIBS"])
218        fi
219
220        dnl If an already present or preinstalled GNU gettext() is found,
221        dnl use it.  But if this macro is used in GNU gettext, and GNU
222        dnl gettext is already preinstalled in libintl, we update this
223        dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
224        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
225           || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
226                && test "$PACKAGE" != gettext-runtime \
227                && test "$PACKAGE" != gettext-tools; }; then
228          gt_use_preinstalled_gnugettext=yes
229        else
230          dnl Reset the values set by searching for libintl.
231          LIBINTL=
232          LTLIBINTL=
233          INCINTL=
234        fi
235
236    ifelse(gt_included_intl, yes, [
237        if test "$gt_use_preinstalled_gnugettext" != "yes"; then
238          dnl GNU gettext is not found in the C library.
239          dnl Fall back on included GNU gettext library.
240          nls_cv_use_gnu_gettext=yes
241        fi
242      fi
243
244      if test "$nls_cv_use_gnu_gettext" = "yes"; then
245        dnl Mark actions used to generate GNU NLS library.
246        BUILD_INCLUDED_LIBINTL=yes
247        USE_INCLUDED_LIBINTL=yes
248        LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
249        LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
250        LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
251      fi
252
253      CATOBJEXT=
254      if test "$gt_use_preinstalled_gnugettext" = "yes" \
255         || test "$nls_cv_use_gnu_gettext" = "yes"; then
256        dnl Mark actions to use GNU gettext tools.
257        CATOBJEXT=.gmo
258      fi
259    ])
260
261    if test -n "$INTL_MACOSX_LIBS"; then
262      if test "$gt_use_preinstalled_gnugettext" = "yes" \
263         || test "$nls_cv_use_gnu_gettext" = "yes"; then
264        dnl Some extra flags are needed during linking.
265        LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
266        LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
267      fi
268    fi
269
270    if test "$gt_use_preinstalled_gnugettext" = "yes" \
271       || test "$nls_cv_use_gnu_gettext" = "yes"; then
272      AC_DEFINE([ENABLE_NLS], [1],
273        [Define to 1 if translation of program messages to the user's native language
274   is requested.])
275    else
276      USE_NLS=no
277    fi
278  fi
279
280  AC_MSG_CHECKING([whether to use NLS])
281  AC_MSG_RESULT([$USE_NLS])
282  if test "$USE_NLS" = "yes"; then
283    AC_MSG_CHECKING([where the gettext function comes from])
284    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
285      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
286        gt_source="external libintl"
287      else
288        gt_source="libc"
289      fi
290    else
291      gt_source="included intl directory"
292    fi
293    AC_MSG_RESULT([$gt_source])
294  fi
295
296  if test "$USE_NLS" = "yes"; then
297
298    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
299      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
300        AC_MSG_CHECKING([how to link with libintl])
301        AC_MSG_RESULT([$LIBINTL])
302        AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
303      fi
304
305      dnl For backward compatibility. Some packages may be using this.
306      AC_DEFINE([HAVE_GETTEXT], [1],
307       [Define if the GNU gettext() function is already present or preinstalled.])
308      AC_DEFINE([HAVE_DCGETTEXT], [1],
309       [Define if the GNU dcgettext() function is already present or preinstalled.])
310    fi
311
312    dnl We need to process the po/ directory.
313    POSUB=po
314  fi
315
316  ifelse(gt_included_intl, yes, [
317    dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
318    dnl to 'yes' because some of the testsuite requires it.
319    if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
320      BUILD_INCLUDED_LIBINTL=yes
321    fi
322
323    dnl Make all variables we use known to autoconf.
324    AC_SUBST([BUILD_INCLUDED_LIBINTL])
325    AC_SUBST([USE_INCLUDED_LIBINTL])
326    AC_SUBST([CATOBJEXT])
327
328    dnl For backward compatibility. Some configure.ins may be using this.
329    nls_cv_header_intl=
330    nls_cv_header_libgt=
331
332    dnl For backward compatibility. Some Makefiles may be using this.
333    DATADIRNAME=share
334    AC_SUBST([DATADIRNAME])
335
336    dnl For backward compatibility. Some Makefiles may be using this.
337    INSTOBJEXT=.mo
338    AC_SUBST([INSTOBJEXT])
339
340    dnl For backward compatibility. Some Makefiles may be using this.
341    GENCAT=gencat
342    AC_SUBST([GENCAT])
343
344    dnl For backward compatibility. Some Makefiles may be using this.
345    INTLOBJS=
346    if test "$USE_INCLUDED_LIBINTL" = yes; then
347      INTLOBJS="\$(GETTOBJS)"
348    fi
349    AC_SUBST([INTLOBJS])
350
351    dnl Enable libtool support if the surrounding package wishes it.
352    INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
353    AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX])
354  ])
355
356  dnl For backward compatibility. Some Makefiles may be using this.
357  INTLLIBS="$LIBINTL"
358  AC_SUBST([INTLLIBS])
359
360  dnl Make all documented variables known to autoconf.
361  AC_SUBST([LIBINTL])
362  AC_SUBST([LTLIBINTL])
363  AC_SUBST([POSUB])
364])
365
366
367dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
368m4_define([gt_NEEDS_INIT],
369[
370  m4_divert_text([DEFAULTS], [gt_needs=])
371  m4_define([gt_NEEDS_INIT], [])
372])
373
374
375dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
376AC_DEFUN([AM_GNU_GETTEXT_NEED],
377[
378  m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
379])
380
381
382dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
383AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
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