Blame m4/gettext.m4

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# gettext.m4 serial 68 (gettext-0.19.8)
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dnl Copyright (C) 1995-2014, 2016 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl
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dnl This file can be used in projects which are not available under
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dnl the GNU General Public License or the GNU Library General Public
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dnl License but which still want to provide support for the GNU gettext
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dnl functionality.
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dnl Please note that the actual code of the GNU gettext library is covered
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dnl by the GNU Library General Public License, and the rest of the GNU
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dnl gettext package is covered by the GNU General Public License.
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dnl They are *not* in the public domain.
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dnl Authors:
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dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
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dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010.
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dnl Macro to add for using GNU gettext.
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dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
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dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
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dnl    default (if it is not specified or empty) is 'no-libtool'.
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dnl    INTLSYMBOL should be 'external' for packages with no intl directory,
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dnl    and 'no-libtool' or 'use-libtool' for packages with an intl directory.
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dnl    If INTLSYMBOL is 'use-libtool', then a libtool library
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dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
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dnl    depending on --{enable,disable}-{shared,static} and on the presence of
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dnl    AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
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dnl    $(top_builddir)/intl/libintl.a will be created.
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dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
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dnl    implementations (in libc or libintl) without the ngettext() function
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dnl    will be ignored.  If NEEDSYMBOL is specified and is
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dnl    'need-formatstring-macros', then GNU gettext implementations that don't
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dnl    support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
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dnl INTLDIR is used to find the intl libraries.  If empty,
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dnl    the value '$(top_builddir)/intl/' is used.
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dnl
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dnl The result of the configuration is one of three cases:
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dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
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dnl    and used.
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dnl    Catalog format: GNU --> install in $(datadir)
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dnl    Catalog extension: .mo after installation, .gmo in source tree
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dnl 2) GNU gettext has been found in the system's C library.
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dnl    Catalog format: GNU --> install in $(datadir)
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dnl    Catalog extension: .mo after installation, .gmo in source tree
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dnl 3) No internationalization, always use English msgid.
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dnl    Catalog format: none
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dnl    Catalog extension: none
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dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
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dnl The use of .gmo is historical (it was needed to avoid overwriting the
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dnl GNU format catalogs when building on a platform with an X/Open gettext),
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dnl but we keep it in order not to force irrelevant filename changes on the
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dnl maintainers.
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dnl
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AC_DEFUN([AM_GNU_GETTEXT],
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[
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  dnl Argument checking.
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  ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
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    [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
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])])])])])
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  ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old],
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    [AC_DIAGNOSE([obsolete], [Use of AM_GNU_GETTEXT without [external] argument is deprecated.])])
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  ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
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    [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
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])])])])
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  define([gt_included_intl],
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    ifelse([$1], [external],
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      ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]),
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      [yes]))
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  define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
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  gt_NEEDS_INIT
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  AM_GNU_GETTEXT_NEED([$2])
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  AC_REQUIRE([AM_PO_SUBDIRS])dnl
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  ifelse(gt_included_intl, yes, [
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    AC_REQUIRE([AM_INTL_SUBDIR])dnl
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  ])
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  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
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  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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  AC_REQUIRE([AC_LIB_RPATH])
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  dnl Sometimes libintl requires libiconv, so first search for libiconv.
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  dnl Ideally we would do this search only after the
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  dnl      if test "$USE_NLS" = "yes"; then
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  dnl        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
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  dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
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  dnl the configure script would need to contain the same shell code
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  dnl again, outside any 'if'. There are two solutions:
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  dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
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  dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
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  dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
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  dnl documented, we avoid it.
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  ifelse(gt_included_intl, yes, , [
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    AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
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  ])
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  dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation.
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  gt_INTL_MACOSX
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  dnl Set USE_NLS.
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  AC_REQUIRE([AM_NLS])
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  ifelse(gt_included_intl, yes, [
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    BUILD_INCLUDED_LIBINTL=no
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    USE_INCLUDED_LIBINTL=no
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  ])
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  LIBINTL=
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  LTLIBINTL=
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  POSUB=
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  dnl Add a version number to the cache macros.
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  case " $gt_needs " in
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    *" need-formatstring-macros "*) gt_api_version=3 ;;
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    *" need-ngettext "*) gt_api_version=2 ;;
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    *) gt_api_version=1 ;;
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  esac
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  gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
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  gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
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  dnl If we use NLS figure out what method
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  if test "$USE_NLS" = "yes"; then
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    gt_use_preinstalled_gnugettext=no
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    ifelse(gt_included_intl, yes, [
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      AC_MSG_CHECKING([whether included gettext is requested])
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      AC_ARG_WITH([included-gettext],
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        [  --with-included-gettext use the GNU gettext library included here],
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        nls_cv_force_use_gnu_gettext=$withval,
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        nls_cv_force_use_gnu_gettext=no)
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      AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext])
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      nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
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      if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
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    ])
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        dnl User does not insist on using GNU NLS library.  Figure out what
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        dnl to use.  If GNU gettext is available we use this.  Else we have
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        dnl to fall back to GNU NLS library.
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        if test $gt_api_version -ge 3; then
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          gt_revision_test_code='
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#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
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#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
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#endif
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changequote(,)dnl
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typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
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changequote([,])dnl
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'
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        else
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          gt_revision_test_code=
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        fi
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        if test $gt_api_version -ge 2; then
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          gt_expression_test_code=' + * ngettext ("", "", 0)'
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        else
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          gt_expression_test_code=
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        fi
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        AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
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         [AC_LINK_IFELSE(
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            [AC_LANG_PROGRAM(
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               [[
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#include <libintl.h>
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#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
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extern int _nl_msg_cat_cntr;
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extern int *_nl_domain_bindings;
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#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings)
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#else
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#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
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#endif
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$gt_revision_test_code
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               ]],
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               [[
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bindtextdomain ("", "");
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return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
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               ]])],
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            [eval "$gt_func_gnugettext_libc=yes"],
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            [eval "$gt_func_gnugettext_libc=no"])])
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        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
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          dnl Sometimes libintl requires libiconv, so first search for libiconv.
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          ifelse(gt_included_intl, yes, , [
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            AM_ICONV_LINK
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          ])
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          dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
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          dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
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          dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
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          dnl even if libiconv doesn't exist.
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          AC_LIB_LINKFLAGS_BODY([intl])
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          AC_CACHE_CHECK([for GNU gettext in libintl],
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            [$gt_func_gnugettext_libintl],
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           [gt_save_CPPFLAGS="$CPPFLAGS"
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            CPPFLAGS="$CPPFLAGS $INCINTL"
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            gt_save_LIBS="$LIBS"
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            LIBS="$LIBS $LIBINTL"
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            dnl Now see whether libintl exists and does not depend on libiconv.
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            AC_LINK_IFELSE(
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              [AC_LANG_PROGRAM(
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                 [[
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#include <libintl.h>
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#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
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extern int _nl_msg_cat_cntr;
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extern
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#ifdef __cplusplus
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"C"
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#endif
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const char *_nl_expand_alias (const char *);
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#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
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#else
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#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
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#endif
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$gt_revision_test_code
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                 ]],
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                 [[
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bindtextdomain ("", "");
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return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
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                 ]])],
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              [eval "$gt_func_gnugettext_libintl=yes"],
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              [eval "$gt_func_gnugettext_libintl=no"])
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            dnl Now see whether libintl exists and depends on libiconv.
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            if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
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              LIBS="$LIBS $LIBICONV"
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              AC_LINK_IFELSE(
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                [AC_LANG_PROGRAM(
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                   [[
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#include <libintl.h>
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#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
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extern int _nl_msg_cat_cntr;
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extern
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#ifdef __cplusplus
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"C"
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#endif
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const char *_nl_expand_alias (const char *);
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#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
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#else
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#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
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#endif
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$gt_revision_test_code
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                   ]],
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                   [[
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bindtextdomain ("", "");
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return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
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                   ]])],
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                [LIBINTL="$LIBINTL $LIBICONV"
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                 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
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                 eval "$gt_func_gnugettext_libintl=yes"
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                ])
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            fi
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            CPPFLAGS="$gt_save_CPPFLAGS"
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            LIBS="$gt_save_LIBS"])
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        fi
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        dnl If an already present or preinstalled GNU gettext() is found,
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        dnl use it.  But if this macro is used in GNU gettext, and GNU
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        dnl gettext is already preinstalled in libintl, we update this
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        dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
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        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
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           || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
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                && test "$PACKAGE" != gettext-runtime \
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                && test "$PACKAGE" != gettext-tools; }; then
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          gt_use_preinstalled_gnugettext=yes
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        else
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          dnl Reset the values set by searching for libintl.
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          LIBINTL=
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          LTLIBINTL=
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          INCINTL=
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        fi
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    ifelse(gt_included_intl, yes, [
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        if test "$gt_use_preinstalled_gnugettext" != "yes"; then
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          dnl GNU gettext is not found in the C library.
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          dnl Fall back on included GNU gettext library.
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          nls_cv_use_gnu_gettext=yes
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        fi
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      fi
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      if test "$nls_cv_use_gnu_gettext" = "yes"; then
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        dnl Mark actions used to generate GNU NLS library.
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        BUILD_INCLUDED_LIBINTL=yes
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        USE_INCLUDED_LIBINTL=yes
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        LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
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        LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
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        LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
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      fi
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      CATOBJEXT=
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      if test "$gt_use_preinstalled_gnugettext" = "yes" \
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         || test "$nls_cv_use_gnu_gettext" = "yes"; then
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        dnl Mark actions to use GNU gettext tools.
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        CATOBJEXT=.gmo
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      fi
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    ])
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    if test -n "$INTL_MACOSX_LIBS"; then
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      if test "$gt_use_preinstalled_gnugettext" = "yes" \
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         || test "$nls_cv_use_gnu_gettext" = "yes"; then
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        dnl Some extra flags are needed during linking.
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        LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
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        LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
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      fi
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    fi
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    if test "$gt_use_preinstalled_gnugettext" = "yes" \
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       || test "$nls_cv_use_gnu_gettext" = "yes"; then
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      AC_DEFINE([ENABLE_NLS], [1],
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        [Define to 1 if translation of program messages to the user's native language
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   is requested.])
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    else
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      USE_NLS=no
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    fi
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  fi
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  AC_MSG_CHECKING([whether to use NLS])
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  AC_MSG_RESULT([$USE_NLS])
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  if test "$USE_NLS" = "yes"; then
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    AC_MSG_CHECKING([where the gettext function comes from])
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    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
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      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
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        gt_source="external libintl"
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      else
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        gt_source="libc"
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      fi
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    else
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      gt_source="included intl directory"
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    fi
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    AC_MSG_RESULT([$gt_source])
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  fi
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  if test "$USE_NLS" = "yes"; then
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    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
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      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
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        AC_MSG_CHECKING([how to link with libintl])
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        AC_MSG_RESULT([$LIBINTL])
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        AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
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      fi
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      dnl For backward compatibility. Some packages may be using this.
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      AC_DEFINE([HAVE_GETTEXT], [1],
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       [Define if the GNU gettext() function is already present or preinstalled.])
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      AC_DEFINE([HAVE_DCGETTEXT], [1],
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       [Define if the GNU dcgettext() function is already present or preinstalled.])
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    fi
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    dnl We need to process the po/ directory.
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    POSUB=po
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  fi
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  ifelse(gt_included_intl, yes, [
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    dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
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    dnl to 'yes' because some of the testsuite requires it.
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    if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
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      BUILD_INCLUDED_LIBINTL=yes
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    fi
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    dnl Make all variables we use known to autoconf.
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    AC_SUBST([BUILD_INCLUDED_LIBINTL])
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    AC_SUBST([USE_INCLUDED_LIBINTL])
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    AC_SUBST([CATOBJEXT])
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    dnl For backward compatibility. Some configure.ins may be using this.
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    nls_cv_header_intl=
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    nls_cv_header_libgt=
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    dnl For backward compatibility. Some Makefiles may be using this.
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    DATADIRNAME=share
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    AC_SUBST([DATADIRNAME])
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    dnl For backward compatibility. Some Makefiles may be using this.
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    INSTOBJEXT=.mo
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    AC_SUBST([INSTOBJEXT])
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    dnl For backward compatibility. Some Makefiles may be using this.
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    GENCAT=gencat
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    AC_SUBST([GENCAT])
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    dnl For backward compatibility. Some Makefiles may be using this.
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    INTLOBJS=
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    if test "$USE_INCLUDED_LIBINTL" = yes; then
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      INTLOBJS="\$(GETTOBJS)"
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    fi
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    AC_SUBST([INTLOBJS])
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    dnl Enable libtool support if the surrounding package wishes it.
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    INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
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    AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX])
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  ])
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  dnl For backward compatibility. Some Makefiles may be using this.
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  INTLLIBS="$LIBINTL"
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  AC_SUBST([INTLLIBS])
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  dnl Make all documented variables known to autoconf.
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  AC_SUBST([LIBINTL])
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  AC_SUBST([LTLIBINTL])
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  AC_SUBST([POSUB])
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])
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dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
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m4_define([gt_NEEDS_INIT],
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[
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  m4_divert_text([DEFAULTS], [gt_needs=])
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  m4_define([gt_NEEDS_INIT], [])
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])
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dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
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AC_DEFUN([AM_GNU_GETTEXT_NEED],
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[
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  m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
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])
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dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
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AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
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dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version])
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AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], [])