1: # gettext.m4 serial 66 (gettext-0.18.2)
2: dnl Copyright (C) 1995-2013 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 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 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 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
146: changequote(,)dnl
147: typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
148: changequote([,])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: $gt_revision_test_code
165: extern int _nl_msg_cat_cntr;
166: extern int *_nl_domain_bindings;
167: ]],
168: [[
169: bindtextdomain ("", "");
170: return * gettext ("")$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: $gt_revision_test_code
197: extern int _nl_msg_cat_cntr;
198: extern
199: #ifdef __cplusplus
200: "C"
201: #endif
202: const char *_nl_expand_alias (const char *);
203: ]],
204: [[
205: bindtextdomain ("", "");
206: return * gettext ("")$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: $gt_revision_test_code
218: extern int _nl_msg_cat_cntr;
219: extern
220: #ifdef __cplusplus
221: "C"
222: #endif
223: const char *_nl_expand_alias (const char *);
224: ]],
225: [[
226: bindtextdomain ("", "");
227: return * gettext ("")$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="$LIBINTL"
376: AC_SUBST([INTLLIBS])
377:
378: dnl Make all documented variables known to autoconf.
379: AC_SUBST([LIBINTL])
380: AC_SUBST([LTLIBINTL])
381: AC_SUBST([POSUB])
382: ])
383:
384:
385: dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
386: m4_define([gt_NEEDS_INIT],
387: [
388: m4_divert_text([DEFAULTS], [gt_needs=])
389: m4_define([gt_NEEDS_INIT], [])
390: ])
391:
392:
393: dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
394: AC_DEFUN([AM_GNU_GETTEXT_NEED],
395: [
396: m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
397: ])
398:
399:
400: dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
401: AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
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