FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/gettext.m4

     # gettext.m4 serial 70 (gettext-0.20)
     dnl Copyright (C) 1995-2014, 2016, 2018 Free Software Foundation, Inc.
     dnl This file is free software; the Free Software Foundation
     dnl gives unlimited permission to copy and/or distribute it,
     dnl with or without modifications, as long as this notice is preserved.
     dnl
     dnl This file can be used in projects which are not available under
     dnl the GNU General Public License or the GNU Library General Public
     dnl License but which still want to provide support for the GNU gettext
    dnl functionality.
    dnl Please note that the actual code of the GNU gettext library is covered
    dnl by the GNU Library General Public License, and the rest of the GNU
    dnl gettext package is covered by the GNU General Public License.
    dnl They are *not* in the public domain.
    
    dnl Authors:
    dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
    dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010.
    
    dnl Macro to add for using GNU gettext.
    
    dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
    dnl INTLSYMBOL must be one of 'external', 'use-libtool'.
    dnl    INTLSYMBOL should be 'external' for packages other than GNU gettext, and
    dnl    'use-libtool' for the packages 'gettext-runtime' and 'gettext-tools'.
    dnl    If INTLSYMBOL is 'use-libtool', then a libtool library
    dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
    dnl    depending on --{enable,disable}-{shared,static} and on the presence of
    dnl    AM-DISABLE-SHARED).
    dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
    dnl    implementations (in libc or libintl) without the ngettext() function
    dnl    will be ignored.  If NEEDSYMBOL is specified and is
    dnl    'need-formatstring-macros', then GNU gettext implementations that don't
    dnl    support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
    dnl INTLDIR is used to find the intl libraries.  If empty,
    dnl    the value '$(top_builddir)/intl/' is used.
    dnl
    dnl The result of the configuration is one of three cases:
    dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
    dnl    and used.
    dnl    Catalog format: GNU --> install in $(datadir)
    dnl    Catalog extension: .mo after installation, .gmo in source tree
    dnl 2) GNU gettext has been found in the system's C library.
    dnl    Catalog format: GNU --> install in $(datadir)
    dnl    Catalog extension: .mo after installation, .gmo in source tree
    dnl 3) No internationalization, always use English msgid.
    dnl    Catalog format: none
    dnl    Catalog extension: none
    dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
    dnl The use of .gmo is historical (it was needed to avoid overwriting the
    dnl GNU format catalogs when building on a platform with an X/Open gettext),
    dnl but we keep it in order not to force irrelevant filename changes on the
    dnl maintainers.
    dnl
    AC_DEFUN([AM_GNU_GETTEXT],
    [
      dnl Argument checking.
      ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [use-libtool], ,
        [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
    ])])])])
      ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old],
        [errprint([ERROR: Use of AM_GNU_GETTEXT without [external] argument is no longer supported.
    ])])
      ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
        [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
    ])])])])
      define([gt_included_intl],
        ifelse([$1], [external], [no], [yes]))
      gt_NEEDS_INIT
      AM_GNU_GETTEXT_NEED([$2])
    
      AC_REQUIRE([AM_PO_SUBDIRS])dnl
      ifelse(gt_included_intl, yes, [
        AC_REQUIRE([AM_INTL_SUBDIR])dnl
      ])
    
      dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
      AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
      AC_REQUIRE([AC_LIB_RPATH])
    
      dnl Sometimes libintl requires libiconv, so first search for libiconv.
      dnl Ideally we would do this search only after the
      dnl      if test "$USE_NLS" = "yes"; then
      dnl        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
      dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
      dnl the configure script would need to contain the same shell code
      dnl again, outside any 'if'. There are two solutions:
      dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
      dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
      dnl Since AC_PROVIDE_IFELSE is not documented, we avoid it.
      ifelse(gt_included_intl, yes, , [
        AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
      ])
    
      dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation.
      gt_INTL_MACOSX
    
      dnl Set USE_NLS.
      AC_REQUIRE([AM_NLS])
   
     ifelse(gt_included_intl, yes, [
       BUILD_INCLUDED_LIBINTL=no
       USE_INCLUDED_LIBINTL=no
     ])
     LIBINTL=
     LTLIBINTL=
     POSUB=
   
     dnl Add a version number to the cache macros.
     case " $gt_needs " in
       *" need-formatstring-macros "*) gt_api_version=3 ;;
       *" need-ngettext "*) gt_api_version=2 ;;
       *) gt_api_version=1 ;;
     esac
     gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
     gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
   
     dnl If we use NLS figure out what method
     if test "$USE_NLS" = "yes"; then
       gt_use_preinstalled_gnugettext=no
       ifelse(gt_included_intl, yes, [
         AC_MSG_CHECKING([whether included gettext is requested])
         AC_ARG_WITH([included-gettext],
           [  --with-included-gettext use the GNU gettext library included here],
           nls_cv_force_use_gnu_gettext=$withval,
           nls_cv_force_use_gnu_gettext=no)
         AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext])
   
         nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
         if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
       ])
           dnl User does not insist on using GNU NLS library.  Figure out what
           dnl to use.  If GNU gettext is available we use this.  Else we have
           dnl to fall back to GNU NLS library.
   
           if test $gt_api_version -ge 3; then
             gt_revision_test_code='
   #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
   #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
   #endif
   changequote(,)dnl
   typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
   changequote([,])dnl
   '
           else
             gt_revision_test_code=
           fi
           if test $gt_api_version -ge 2; then
             gt_expression_test_code=' + * ngettext ("", "", 0)'
           else
             gt_expression_test_code=
           fi
   
           AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
            [AC_LINK_IFELSE(
               [AC_LANG_PROGRAM(
                  [[
   #include <libintl.h>
   #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
   extern int _nl_msg_cat_cntr;
   extern int *_nl_domain_bindings;
   #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings)
   #else
   #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
   #endif
   $gt_revision_test_code
                  ]],
                  [[
   bindtextdomain ("", "");
   return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
                  ]])],
               [eval "$gt_func_gnugettext_libc=yes"],
               [eval "$gt_func_gnugettext_libc=no"])])
   
           if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
             dnl Sometimes libintl requires libiconv, so first search for libiconv.
             ifelse(gt_included_intl, yes, , [
               AM_ICONV_LINK
             ])
             dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
             dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
             dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
             dnl even if libiconv doesn't exist.
             AC_LIB_LINKFLAGS_BODY([intl])
             AC_CACHE_CHECK([for GNU gettext in libintl],
               [$gt_func_gnugettext_libintl],
              [gt_save_CPPFLAGS="$CPPFLAGS"
               CPPFLAGS="$CPPFLAGS $INCINTL"
               gt_save_LIBS="$LIBS"
               LIBS="$LIBS $LIBINTL"
               dnl Now see whether libintl exists and does not depend on libiconv.
               AC_LINK_IFELSE(
                 [AC_LANG_PROGRAM(
                    [[
   #include <libintl.h>
   #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
   extern int _nl_msg_cat_cntr;
   extern
   #ifdef __cplusplus
   "C"
   #endif
   const char *_nl_expand_alias (const char *);
   #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
   #else
   #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
   #endif
   $gt_revision_test_code
                    ]],
                    [[
   bindtextdomain ("", "");
   return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
                    ]])],
                 [eval "$gt_func_gnugettext_libintl=yes"],
                 [eval "$gt_func_gnugettext_libintl=no"])
               dnl Now see whether libintl exists and depends on libiconv.
               if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
                 LIBS="$LIBS $LIBICONV"
                 AC_LINK_IFELSE(
                   [AC_LANG_PROGRAM(
                      [[
   #include <libintl.h>
   #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
   extern int _nl_msg_cat_cntr;
   extern
   #ifdef __cplusplus
   "C"
   #endif
   const char *_nl_expand_alias (const char *);
   #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
   #else
   #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
   #endif
   $gt_revision_test_code
                      ]],
                      [[
   bindtextdomain ("", "");
   return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
                      ]])],
                   [LIBINTL="$LIBINTL $LIBICONV"
                    LTLIBINTL="$LTLIBINTL $LTLIBICONV"
                    eval "$gt_func_gnugettext_libintl=yes"
                   ])
               fi
               CPPFLAGS="$gt_save_CPPFLAGS"
               LIBS="$gt_save_LIBS"])
           fi
   
           dnl If an already present or preinstalled GNU gettext() is found,
           dnl use it.  But if this macro is used in GNU gettext, and GNU
           dnl gettext is already preinstalled in libintl, we update this
           dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
           if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
              || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
                   && test "$PACKAGE" != gettext-runtime \
                   && test "$PACKAGE" != gettext-tools; }; then
             gt_use_preinstalled_gnugettext=yes
           else
             dnl Reset the values set by searching for libintl.
             LIBINTL=
             LTLIBINTL=
             INCINTL=
           fi
   
       ifelse(gt_included_intl, yes, [
           if test "$gt_use_preinstalled_gnugettext" != "yes"; then
             dnl GNU gettext is not found in the C library.
             dnl Fall back on included GNU gettext library.
             nls_cv_use_gnu_gettext=yes
           fi
         fi
   
         if test "$nls_cv_use_gnu_gettext" = "yes"; then
           dnl Mark actions used to generate GNU NLS library.
           BUILD_INCLUDED_LIBINTL=yes
           USE_INCLUDED_LIBINTL=yes
           LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LIBICONV $LIBTHREAD"
           LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LTLIBICONV $LTLIBTHREAD"
           LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
         fi
   
         CATOBJEXT=
         if test "$gt_use_preinstalled_gnugettext" = "yes" \
            || test "$nls_cv_use_gnu_gettext" = "yes"; then
           dnl Mark actions to use GNU gettext tools.
           CATOBJEXT=.gmo
         fi
       ])
   
       if test -n "$INTL_MACOSX_LIBS"; then
         if test "$gt_use_preinstalled_gnugettext" = "yes" \
            || test "$nls_cv_use_gnu_gettext" = "yes"; then
           dnl Some extra flags are needed during linking.
           LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
           LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
         fi
       fi
   
       if test "$gt_use_preinstalled_gnugettext" = "yes" \
          || test "$nls_cv_use_gnu_gettext" = "yes"; then
         AC_DEFINE([ENABLE_NLS], [1],
           [Define to 1 if translation of program messages to the user's native language
      is requested.])
       else
         USE_NLS=no
       fi
     fi
   
     AC_MSG_CHECKING([whether to use NLS])
     AC_MSG_RESULT([$USE_NLS])
     if test "$USE_NLS" = "yes"; then
       AC_MSG_CHECKING([where the gettext function comes from])
       if test "$gt_use_preinstalled_gnugettext" = "yes"; then
         if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
           gt_source="external libintl"
         else
           gt_source="libc"
         fi
       else
         gt_source="included intl directory"
       fi
       AC_MSG_RESULT([$gt_source])
     fi
   
     if test "$USE_NLS" = "yes"; then
   
       if test "$gt_use_preinstalled_gnugettext" = "yes"; then
         if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
           AC_MSG_CHECKING([how to link with libintl])
           AC_MSG_RESULT([$LIBINTL])
           AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
         fi
   
         dnl For backward compatibility. Some packages may be using this.
         AC_DEFINE([HAVE_GETTEXT], [1],
          [Define if the GNU gettext() function is already present or preinstalled.])
         AC_DEFINE([HAVE_DCGETTEXT], [1],
          [Define if the GNU dcgettext() function is already present or preinstalled.])
       fi
   
       dnl We need to process the po/ directory.
       POSUB=po
     fi
   
     ifelse(gt_included_intl, yes, [
       dnl In GNU gettext we have to set BUILD_INCLUDED_LIBINTL to 'yes'
       dnl because some of the testsuite requires it.
       BUILD_INCLUDED_LIBINTL=yes
   
       dnl Make all variables we use known to autoconf.
       AC_SUBST([BUILD_INCLUDED_LIBINTL])
       AC_SUBST([USE_INCLUDED_LIBINTL])
       AC_SUBST([CATOBJEXT])
     ])
   
     dnl For backward compatibility. Some Makefiles may be using this.
     INTLLIBS="$LIBINTL"
     AC_SUBST([INTLLIBS])
   
     dnl Make all documented variables known to autoconf.
     AC_SUBST([LIBINTL])
     AC_SUBST([LTLIBINTL])
     AC_SUBST([POSUB])
   ])
   
   
   dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
   m4_define([gt_NEEDS_INIT],
   [
     m4_divert_text([DEFAULTS], [gt_needs=])
     m4_define([gt_NEEDS_INIT], [])
   ])
   
   
   dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
   AC_DEFUN([AM_GNU_GETTEXT_NEED],
   [
     m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
   ])
   
   
   dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
   AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
   
   
   dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version])
   AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], [])

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