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      1 # gettext.m4 serial 37 (gettext-0.14.4)
      2 dnl Copyright (C) 1995-2005 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 (a] cygnus.com>, 1995-2000.
     18 dnl   Bruno Haible <haible (a] clisp.cons.org>, 2000-2003.
     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([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
     64     [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
     65 ])])])])
     66   define([gt_included_intl], ifelse([$1], [external], [no], [yes]))
     67   define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
     68 
     69   AC_REQUIRE([AM_PO_SUBDIRS])dnl
     70   ifelse(gt_included_intl, yes, [
     71     AC_REQUIRE([AM_INTL_SUBDIR])dnl
     72   ])
     73 
     74   dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
     75   AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
     76   AC_REQUIRE([AC_LIB_RPATH])
     77 
     78   dnl Sometimes libintl requires libiconv, so first search for libiconv.
     79   dnl Ideally we would do this search only after the
     80   dnl      if test "$USE_NLS" = "yes"; then
     81   dnl        if test "$gt_cv_func_gnugettext_libc" != "yes"; then
     82   dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
     83   dnl the configure script would need to contain the same shell code
     84   dnl again, outside any 'if'. There are two solutions:
     85   dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
     86   dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
     87   dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
     88   dnl documented, we avoid it.
     89   ifelse(gt_included_intl, yes, , [
     90     AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
     91   ])
     92 
     93   dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
     94   gt_INTL_MACOSX
     95 
     96   dnl Set USE_NLS.
     97   AM_NLS
     98 
     99   ifelse(gt_included_intl, yes, [
    100     BUILD_INCLUDED_LIBINTL=no
    101     USE_INCLUDED_LIBINTL=no
    102   ])
    103   LIBINTL=
    104   LTLIBINTL=
    105   POSUB=
    106 
    107   dnl If we use NLS figure out what method
    108   if test "$USE_NLS" = "yes"; then
    109     gt_use_preinstalled_gnugettext=no
    110     ifelse(gt_included_intl, yes, [
    111       AC_MSG_CHECKING([whether included gettext is requested])
    112       AC_ARG_WITH(included-gettext,
    113         [  --with-included-gettext use the GNU gettext library included here],
    114         nls_cv_force_use_gnu_gettext=$withval,
    115         nls_cv_force_use_gnu_gettext=no)
    116       AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
    117 
    118       nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
    119       if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
    120     ])
    121         dnl User does not insist on using GNU NLS library.  Figure out what
    122         dnl to use.  If GNU gettext is available we use this.  Else we have
    123         dnl to fall back to GNU NLS library.
    124 
    125         dnl Add a version number to the cache macros.
    126         define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
    127         define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
    128         define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
    129 
    130         AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
    131          [AC_TRY_LINK([#include <libintl.h>
    132 ]ifelse([$2], [need-formatstring-macros],
    133 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
    134 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
    135 #endif
    136 changequote(,)dnl
    137 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
    138 changequote([,])dnl
    139 ], [])[extern int _nl_msg_cat_cntr;
    140 extern int *_nl_domain_bindings;],
    141             [bindtextdomain ("", "");
    142 return * 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
    168 changequote(,)dnl
    169 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
    170 changequote([,])dnl
    171 ], [])[extern int _nl_msg_cat_cntr;
    172 extern
    173 #ifdef __cplusplus
    174 "C"
    175 #endif
    176 const char *_nl_expand_alias (const char *);],
    177               [bindtextdomain ("", "");
    178 return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
    179               gt_cv_func_gnugettext_libintl=yes,
    180               gt_cv_func_gnugettext_libintl=no)
    181             dnl Now see whether libintl exists and depends on libiconv.
    182             if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
    183               LIBS="$LIBS $LIBICONV"
    184               AC_TRY_LINK([#include <libintl.h>
    185 ]ifelse([$2], [need-formatstring-macros],
    186 [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
    187 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
    188 #endif
    189 changequote(,)dnl
    190 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
    191 changequote([,])dnl
    192 ], [])[extern int _nl_msg_cat_cntr;
    193 extern
    194 #ifdef __cplusplus
    195 "C"
    196 #endif
    197 const char *_nl_expand_alias (const char *);],
    198                 [bindtextdomain ("", "");
    199 return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
    200                [LIBINTL="$LIBINTL $LIBICONV"
    201                 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
    202                 gt_cv_func_gnugettext_libintl=yes
    203                ])
    204             fi
    205             CPPFLAGS="$gt_save_CPPFLAGS"
    206             LIBS="$gt_save_LIBS"])
    207         fi
    208 
    209         dnl If an already present or preinstalled GNU gettext() is found,
    210         dnl use it.  But if this macro is used in GNU gettext, and GNU
    211         dnl gettext is already preinstalled in libintl, we update this
    212         dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
    213         if test "$gt_cv_func_gnugettext_libc" = "yes" \
    214            || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
    215                 && test "$PACKAGE" != gettext-runtime \
    216                 && test "$PACKAGE" != gettext-tools; }; then
    217           gt_use_preinstalled_gnugettext=yes
    218         else
    219           dnl Reset the values set by searching for libintl.
    220           LIBINTL=
    221           LTLIBINTL=
    222           INCINTL=
    223         fi
    224 
    225     ifelse(gt_included_intl, yes, [
    226         if test "$gt_use_preinstalled_gnugettext" != "yes"; then
    227           dnl GNU gettext is not found in the C library.
    228           dnl Fall back on included GNU gettext library.
    229           nls_cv_use_gnu_gettext=yes
    230         fi
    231       fi
    232 
    233       if test "$nls_cv_use_gnu_gettext" = "yes"; then
    234         dnl Mark actions used to generate GNU NLS library.
    235         BUILD_INCLUDED_LIBINTL=yes
    236         USE_INCLUDED_LIBINTL=yes
    237         LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV"
    238         LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV"
    239         LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
    240       fi
    241 
    242       CATOBJEXT=
    243       if test "$gt_use_preinstalled_gnugettext" = "yes" \
    244          || test "$nls_cv_use_gnu_gettext" = "yes"; then
    245         dnl Mark actions to use GNU gettext tools.
    246         CATOBJEXT=.gmo
    247       fi
    248     ])
    249 
    250     if test -n "$INTL_MACOSX_LIBS"; then
    251       if test "$gt_use_preinstalled_gnugettext" = "yes" \
    252          || test "$nls_cv_use_gnu_gettext" = "yes"; then
    253         dnl Some extra flags are needed during linking.
    254         LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
    255         LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
    256       fi
    257     fi
    258 
    259     if test "$gt_use_preinstalled_gnugettext" = "yes" \
    260        || test "$nls_cv_use_gnu_gettext" = "yes"; then
    261       AC_DEFINE(ENABLE_NLS, 1,
    262         [Define to 1 if translation of program messages to the user's native language
    263    is requested.])
    264     else
    265       USE_NLS=no
    266     fi
    267   fi
    268 
    269   AC_MSG_CHECKING([whether to use NLS])
    270   AC_MSG_RESULT([$USE_NLS])
    271   if test "$USE_NLS" = "yes"; then
    272     AC_MSG_CHECKING([where the gettext function comes from])
    273     if test "$gt_use_preinstalled_gnugettext" = "yes"; then
    274       if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
    275         gt_source="external libintl"
    276       else
    277         gt_source="libc"
    278       fi
    279     else
    280       gt_source="included intl directory"
    281     fi
    282     AC_MSG_RESULT([$gt_source])
    283   fi
    284 
    285   if test "$USE_NLS" = "yes"; then
    286 
    287     if test "$gt_use_preinstalled_gnugettext" = "yes"; then
    288       if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
    289         AC_MSG_CHECKING([how to link with libintl])
    290         AC_MSG_RESULT([$LIBINTL])
    291         AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
    292       fi
    293 
    294       dnl For backward compatibility. Some packages may be using this.
    295       AC_DEFINE(HAVE_GETTEXT, 1,
    296        [Define if the GNU gettext() function is already present or preinstalled.])
    297       AC_DEFINE(HAVE_DCGETTEXT, 1,
    298        [Define if the GNU dcgettext() function is already present or preinstalled.])
    299     fi
    300 
    301     dnl We need to process the po/ directory.
    302     POSUB=po
    303   fi
    304 
    305   ifelse(gt_included_intl, yes, [
    306     dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
    307     dnl to 'yes' because some of the testsuite requires it.
    308     if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
    309       BUILD_INCLUDED_LIBINTL=yes
    310     fi
    311 
    312     dnl Make all variables we use known to autoconf.
    313     AC_SUBST(BUILD_INCLUDED_LIBINTL)
    314     AC_SUBST(USE_INCLUDED_LIBINTL)
    315     AC_SUBST(CATOBJEXT)
    316 
    317     dnl For backward compatibility. Some configure.ins may be using this.
    318     nls_cv_header_intl=
    319     nls_cv_header_libgt=
    320 
    321     dnl For backward compatibility. Some Makefiles may be using this.
    322     DATADIRNAME=share
    323     AC_SUBST(DATADIRNAME)
    324 
    325     dnl For backward compatibility. Some Makefiles may be using this.
    326     INSTOBJEXT=.mo
    327     AC_SUBST(INSTOBJEXT)
    328 
    329     dnl For backward compatibility. Some Makefiles may be using this.
    330     GENCAT=gencat
    331     AC_SUBST(GENCAT)
    332 
    333     dnl For backward compatibility. Some Makefiles may be using this.
    334     INTLOBJS=
    335     if test "$USE_INCLUDED_LIBINTL" = yes; then
    336       INTLOBJS="\$(GETTOBJS)"
    337     fi
    338     AC_SUBST(INTLOBJS)
    339 
    340     dnl Enable libtool support if the surrounding package wishes it.
    341     INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
    342     AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
    343   ])
    344 
    345   dnl For backward compatibility. Some Makefiles may be using this.
    346   INTLLIBS="$LIBINTL"
    347   AC_SUBST(INTLLIBS)
    348 
    349   dnl Make all documented variables known to autoconf.
    350   AC_SUBST(LIBINTL)
    351   AC_SUBST(LTLIBINTL)
    352   AC_SUBST(POSUB)
    353 ])
    354 
    355 
    356 dnl Checks for all prerequisites of the intl subdirectory,
    357 dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
    358 dnl            USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
    359 AC_DEFUN([AM_INTL_SUBDIR],
    360 [
    361   AC_REQUIRE([AC_PROG_INSTALL])dnl
    362   AC_REQUIRE([AM_MKINSTALLDIRS])dnl
    363   AC_REQUIRE([AC_PROG_CC])dnl
    364   AC_REQUIRE([AC_CANONICAL_HOST])dnl
    365   AC_REQUIRE([gt_GLIBC2])dnl
    366   AC_REQUIRE([AC_PROG_RANLIB])dnl
    367   AC_REQUIRE([AC_ISC_POSIX])dnl
    368   AC_REQUIRE([AC_HEADER_STDC])dnl
    369   AC_REQUIRE([AC_C_CONST])dnl
    370   AC_REQUIRE([bh_C_SIGNED])dnl
    371   AC_REQUIRE([AC_C_INLINE])dnl
    372   AC_REQUIRE([AC_TYPE_OFF_T])dnl
    373   AC_REQUIRE([AC_TYPE_SIZE_T])dnl
    374   AC_REQUIRE([gl_AC_TYPE_LONG_LONG])dnl
    375   AC_REQUIRE([gt_TYPE_LONGDOUBLE])dnl
    376   AC_REQUIRE([gt_TYPE_WCHAR_T])dnl
    377   AC_REQUIRE([gt_TYPE_WINT_T])dnl
    378   AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
    379   AC_REQUIRE([gl_AC_HEADER_STDINT_H])
    380   AC_REQUIRE([gt_TYPE_INTMAX_T])
    381   AC_REQUIRE([gt_PRINTF_POSIX])
    382   AC_REQUIRE([AC_FUNC_ALLOCA])dnl
    383   AC_REQUIRE([AC_FUNC_MMAP])dnl
    384   AC_REQUIRE([gl_GLIBC21])dnl
    385   AC_REQUIRE([gt_INTDIV0])dnl
    386   AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])dnl
    387   AC_REQUIRE([gt_HEADER_INTTYPES_H])dnl
    388   AC_REQUIRE([gt_INTTYPES_PRI])dnl
    389   AC_REQUIRE([gl_XSIZE])dnl
    390   AC_REQUIRE([gt_INTL_MACOSX])dnl
    391 
    392   AC_CHECK_TYPE([ptrdiff_t], ,
    393     [AC_DEFINE([ptrdiff_t], [long],
    394        [Define as the type of the result of subtracting two pointers, if the system doesn't define it.])
    395     ])
    396   AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
    397 stdlib.h string.h unistd.h sys/param.h])
    398   AC_CHECK_FUNCS([asprintf fwprintf getcwd getegid geteuid getgid getuid \
    399 mempcpy munmap putenv setenv setlocale snprintf stpcpy strcasecmp strdup \
    400 strtoul tsearch wcslen __argz_count __argz_stringify __argz_next \
    401 __fsetlocking])
    402 
    403   dnl Use the _snprintf function only if it is declared (because on NetBSD it
    404   dnl is defined as a weak alias of snprintf; we prefer to use the latter).
    405   gt_CHECK_DECL(_snprintf, [#include <stdio.h>])
    406   gt_CHECK_DECL(_snwprintf, [#include <stdio.h>])
    407 
    408   dnl Use the *_unlocked functions only if they are declared.
    409   dnl (because some of them were defined without being declared in Solaris
    410   dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built
    411   dnl on Solaris 2.5.1 to run on Solaris 2.6).
    412   dnl Don't use AC_CHECK_DECLS because it isn't supported in autoconf-2.13.
    413   gt_CHECK_DECL(feof_unlocked, [#include <stdio.h>])
    414   gt_CHECK_DECL(fgets_unlocked, [#include <stdio.h>])
    415   gt_CHECK_DECL(getc_unlocked, [#include <stdio.h>])
    416 
    417   case $gt_cv_func_printf_posix in
    418     *yes) HAVE_POSIX_PRINTF=1 ;;
    419     *) HAVE_POSIX_PRINTF=0 ;;
    420   esac
    421   AC_SUBST([HAVE_POSIX_PRINTF])
    422   if test "$ac_cv_func_asprintf" = yes; then
    423     HAVE_ASPRINTF=1
    424   else
    425     HAVE_ASPRINTF=0
    426   fi
    427   AC_SUBST([HAVE_ASPRINTF])
    428   if test "$ac_cv_func_snprintf" = yes; then
    429     HAVE_SNPRINTF=1
    430   else
    431     HAVE_SNPRINTF=0
    432   fi
    433   AC_SUBST([HAVE_SNPRINTF])
    434   if test "$ac_cv_func_wprintf" = yes; then
    435     HAVE_WPRINTF=1
    436   else
    437     HAVE_WPRINTF=0
    438   fi
    439   AC_SUBST([HAVE_WPRINTF])
    440 
    441   AM_ICONV
    442   AM_LANGINFO_CODESET
    443   if test $ac_cv_header_locale_h = yes; then
    444     gt_LC_MESSAGES
    445   fi
    446 
    447   if test -n "$INTL_MACOSX_LIBS"; then
    448     CPPFLAGS="$CPPFLAGS -I/System/Library/Frameworks/CoreFoundation.framework/Headers"
    449   fi
    450 
    451   dnl intl/plural.c is generated from intl/plural.y. It requires bison,
    452   dnl because plural.y uses bison specific features. It requires at least
    453   dnl bison-1.26 because earlier versions generate a plural.c that doesn't
    454   dnl compile.
    455   dnl bison is only needed for the maintainer (who touches plural.y). But in
    456   dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
    457   dnl the rule in general Makefile. Now, some people carelessly touch the
    458   dnl files or have a broken "make" program, hence the plural.c rule will
    459   dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
    460   dnl present or too old.
    461   AC_CHECK_PROGS([INTLBISON], [bison])
    462   if test -z "$INTLBISON"; then
    463     ac_verc_fail=yes
    464   else
    465     dnl Found it, now check the version.
    466     AC_MSG_CHECKING([version of bison])
    467 changequote(<<,>>)dnl
    468     ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
    469     case $ac_prog_version in
    470       '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
    471       1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
    472 changequote([,])dnl
    473          ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
    474       *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
    475     esac
    476     AC_MSG_RESULT([$ac_prog_version])
    477   fi
    478   if test $ac_verc_fail = yes; then
    479     INTLBISON=:
    480   fi
    481 ])
    482 
    483 
    484 dnl Checks for special options needed on MacOS X.
    485 dnl Defines INTL_MACOSX_LIBS.
    486 AC_DEFUN([gt_INTL_MACOSX],
    487 [
    488   dnl Check for API introduced in MacOS X 10.2.
    489   AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
    490     gt_cv_func_CFPreferencesCopyAppValue,
    491     [gt_save_CPPFLAGS="$CPPFLAGS"
    492      CPPFLAGS="$CPPFLAGS -I/System/Library/Frameworks/CoreFoundation.framework/Headers"
    493      gt_save_LIBS="$LIBS"
    494      LIBS="$LIBS -framework CoreFoundation"
    495      AC_TRY_LINK([#include <CFPreferences.h>],
    496        [CFPreferencesCopyAppValue(NULL, NULL)],
    497        [gt_cv_func_CFPreferencesCopyAppValue=yes],
    498        [gt_cv_func_CFPreferencesCopyAppValue=no])
    499      CPPFLAGS="$gt_save_CPPFLAGS"
    500      LIBS="$gt_save_LIBS"])
    501   if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
    502     AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], 1,
    503       [Define to 1 if you have the MacOS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
    504   fi
    505   dnl Check for API introduced in MacOS X 10.3.
    506   AC_CACHE_CHECK([for CFLocaleCopyCurrent], gt_cv_func_CFLocaleCopyCurrent,
    507     [gt_save_CPPFLAGS="$CPPFLAGS"
    508      CPPFLAGS="$CPPFLAGS -I/System/Library/Frameworks/CoreFoundation.framework/Headers"
    509      gt_save_LIBS="$LIBS"
    510      LIBS="$LIBS -framework CoreFoundation"
    511      AC_TRY_LINK([#include <CFLocale.h>], [CFLocaleCopyCurrent();],
    512        [gt_cv_func_CFLocaleCopyCurrent=yes],
    513        [gt_cv_func_CFLocaleCopyCurrent=no])
    514      CPPFLAGS="$gt_save_CPPFLAGS"
    515      LIBS="$gt_save_LIBS"])
    516   if test $gt_cv_func_CFLocaleCopyCurrent = yes; then
    517     AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], 1,
    518       [Define to 1 if you have the MacOS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
    519   fi
    520   INTL_MACOSX_LIBS=
    521   if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then
    522     INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
    523   fi
    524   AC_SUBST([INTL_MACOSX_LIBS])
    525 ])
    526 
    527 
    528 dnl gt_CHECK_DECL(FUNC, INCLUDES)
    529 dnl Check whether a function is declared.
    530 AC_DEFUN([gt_CHECK_DECL],
    531 [
    532   AC_CACHE_CHECK([whether $1 is declared], ac_cv_have_decl_$1,
    533     [AC_TRY_COMPILE([$2], [
    534 #ifndef $1
    535   char *p = (char *) $1;
    536 #endif
    537 ], ac_cv_have_decl_$1=yes, ac_cv_have_decl_$1=no)])
    538   if test $ac_cv_have_decl_$1 = yes; then
    539     gt_value=1
    540   else
    541     gt_value=0
    542   fi
    543   AC_DEFINE_UNQUOTED([HAVE_DECL_]translit($1, [a-z], [A-Z]), [$gt_value],
    544     [Define to 1 if you have the declaration of `$1', and to 0 if you don't.])
    545 ])
    546 
    547 
    548 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
    549 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
    550