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diff --git a/m4/gettext.m4 b/m4/gettext.m4
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+++ b/m4/gettext.m4
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+# Macro to add for using GNU gettext.
+# Ulrich Drepper <drepper@cygnus.com>, 1995.
+#
+# This file can be copied and used freely without restrictions.  It can
+# be used in projects which are not available under the GNU General Public
+# License or the GNU Library General Public License but which still want
+# to provide support for the GNU gettext functionality.
+# Please note that the actual code of the GNU gettext library is covered
+# by the GNU Library General Public License, and the rest of the GNU
+# gettext package package is covered by the GNU General Public License.
+# They are *not* in the public domain.
+
+# serial 10
+
+dnl Usage: AM_WITH_NLS([TOOLSYMBOL], [NEEDSYMBOL], [LIBDIR]).
+dnl If TOOLSYMBOL is specified and 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). Otherwise, a static library
+dnl    $(top_builddir)/intl/libintl.a will be created.
+dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
+dnl    implementations (in libc or libintl) without the ngettext() function
+dnl    will be ignored.
+dnl LIBDIR is used to find the intl libraries.  If empty,
+dnl    the value `$(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 $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 3) No internationalization, always use English msgid.
+dnl    Catalog format: none
+dnl    Catalog extension: none
+dnl The use of .gmo is historical (it was needed to avoid overwriting the
+dnl GNU format catalogs when building on a platform with an X/Open gettext),
+dnl but we keep it in order not to force irrelevant filename changes on the
+dnl maintainers.
+dnl
+AC_DEFUN([AM_WITH_NLS],
+  [AC_MSG_CHECKING([whether NLS is requested])
+    dnl Default is enabled NLS
+    AC_ARG_ENABLE(nls,
+      [  --disable-nls           do not use Native Language Support],
+      USE_NLS=$enableval, USE_NLS=yes)
+    AC_MSG_RESULT($USE_NLS)
+    AC_SUBST(USE_NLS)
+
+    BUILD_INCLUDED_LIBINTL=no
+    USE_INCLUDED_LIBINTL=no
+    INTLLIBS=
+
+    dnl If we use NLS figure out what method
+    if test "$USE_NLS" = "yes"; then
+      AC_DEFINE(ENABLE_NLS, 1,
+        [Define to 1 if translation of program messages to the user's native language
+   is requested.])
+      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.
+	CATOBJEXT=NONE
+
+        dnl Add a version number to the cache macros.
+        define(gt_cv_func_gnugettext_libc, [gt_cv_func_gnugettext]ifelse([$2], need-ngettext, 2, 1)[_libc])
+        define(gt_cv_func_gnugettext_libintl, [gt_cv_func_gnugettext]ifelse([$2], need-ngettext, 2, 1)[_libintl])
+
+	AC_CHECK_HEADER(libintl.h,
+	  [AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
+	    [AC_TRY_LINK([#include <libintl.h>
+extern int _nl_msg_cat_cntr;],
+	       [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], need-ngettext, [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr],
+	       gt_cv_func_gnugettext_libc=yes,
+	       gt_cv_func_gnugettext_libc=no)])
+
+	   if test "$gt_cv_func_gnugettext_libc" != "yes"; then
+	     AC_CACHE_CHECK([for GNU gettext in libintl],
+	       gt_cv_func_gnugettext_libintl,
+	       [gt_save_LIBS="$LIBS"
+		LIBS="$LIBS -lintl $LIBICONV"
+		AC_TRY_LINK([#include <libintl.h>
+extern int _nl_msg_cat_cntr;],
+		  [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], need-ngettext, [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr],
+		  gt_cv_func_gnugettext_libintl=yes,
+		  gt_cv_func_gnugettext_libintl=no)
+		LIBS="$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 test "$gt_cv_func_gnugettext_libc" = "yes" \
+	      || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
+		   && test "$PACKAGE" != gettext; }; then
+	     AC_DEFINE(HAVE_GETTEXT, 1,
+               [Define if the GNU gettext() function is already present or preinstalled.])
+
+	     if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
+	       dnl If iconv() is in a separate libiconv library, then anyone
+	       dnl linking with libintl{.a,.so} also needs to link with
+	       dnl libiconv.
+	       INTLLIBS="-lintl $LIBICONV"
+	     fi
+
+	     gt_save_LIBS="$LIBS"
+	     LIBS="$LIBS $INTLLIBS"
+	     AC_CHECK_FUNCS(dcgettext)
+	     LIBS="$gt_save_LIBS"
+
+	     dnl Search for GNU msgfmt in the PATH.
+	     AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
+	       [$ac_dir/$ac_word --statistics /dev/null >/dev/null 2>&1], :)
+	     AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
+
+	     dnl Search for GNU xgettext in the PATH.
+	     AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
+	       [$ac_dir/$ac_word --omit-header /dev/null >/dev/null 2>&1], :)
+
+	     CATOBJEXT=.gmo
+	   fi
+	])
+
+        if test "$CATOBJEXT" = "NONE"; then
+	  dnl GNU gettext is not found in the C library.
+	  dnl Fall back on GNU gettext library.
+	  nls_cv_use_gnu_gettext=yes
+        fi
+      fi
+
+      if test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions used to generate GNU NLS library.
+        INTLOBJS="\$(GETTOBJS)"
+        AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
+	  [$ac_dir/$ac_word --statistics /dev/null >/dev/null 2>&1], :)
+        AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
+        AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
+	  [$ac_dir/$ac_word --omit-header /dev/null >/dev/null 2>&1], :)
+        AC_SUBST(MSGFMT)
+	BUILD_INCLUDED_LIBINTL=yes
+	USE_INCLUDED_LIBINTL=yes
+        CATOBJEXT=.gmo
+	INTLLIBS="ifelse([$3],[],\$(top_builddir)/intl,[$3])/libintl.ifelse([$1], use-libtool, [l], [])a $LIBICONV"
+	LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
+      fi
+
+      dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+      dnl Test whether we really found GNU msgfmt.
+      if test "$GMSGFMT" != ":"; then
+	dnl If it is no GNU msgfmt we define it as : so that the
+	dnl Makefiles still can work.
+	if $GMSGFMT --statistics /dev/null >/dev/null 2>&1; then
+	  : ;
+	else
+	  AC_MSG_RESULT(
+	    [found msgfmt program is not GNU msgfmt; ignore it])
+	  GMSGFMT=":"
+	fi
+      fi
+
+      dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+      dnl Test whether we really found GNU xgettext.
+      if test "$XGETTEXT" != ":"; then
+	dnl If it is no GNU xgettext we define it as : so that the
+	dnl Makefiles still can work.
+	if $XGETTEXT --omit-header /dev/null >/dev/null 2>&1; then
+	  : ;
+	else
+	  AC_MSG_RESULT(
+	    [found xgettext program is not GNU xgettext; ignore it])
+	  XGETTEXT=":"
+	fi
+      fi
+
+      dnl We need to process the po/ directory.
+      POSUB=po
+    fi
+    AC_OUTPUT_COMMANDS(
+     [for ac_file in $CONFIG_FILES; do
+        # Support "outfile[:infile[:infile...]]"
+        case "$ac_file" in
+          *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+        esac
+        # PO directories have a Makefile.in generated from Makefile.in.in.
+        case "$ac_file" in */Makefile.in)
+          # Adjust a relative srcdir.
+          ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+          ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
+          ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+          # In autoconf-2.13 it is called $ac_given_srcdir.
+          # In autoconf-2.50 it is called $srcdir.
+          test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+          case "$ac_given_srcdir" in
+            .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+            /*) top_srcdir="$ac_given_srcdir" ;;
+            *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+          esac
+          if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+            rm -f "$ac_dir/POTFILES"
+            test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+            sed -e "/^#/d" -e "/^[ 	]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," -e "\$s/\(.*\) \\\\/\1/" < "$ac_given_srcdir/$ac_dir/POTFILES.in" > "$ac_dir/POTFILES"
+            test -n "$as_me" && echo "$as_me: creating $ac_dir/Makefile" || echo "creating $ac_dir/Makefile"
+            sed -e "/POTFILES =/r $ac_dir/POTFILES" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
+          fi
+          ;;
+        esac
+      done])
+
+
+    dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
+    dnl to 'yes' because some of the testsuite requires it.
+    if test "$PACKAGE" = gettext; then
+      BUILD_INCLUDED_LIBINTL=yes
+    fi
+
+    dnl intl/plural.c is generated from intl/plural.y. It requires bison,
+    dnl because plural.y uses bison specific features. It requires at least
+    dnl bison-1.26 because earlier versions generate a plural.c that doesn't
+    dnl compile.
+    dnl bison is only needed for the maintainer (who touches plural.y). But in
+    dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
+    dnl the rule in general Makefile. Now, some people carelessly touch the
+    dnl files or have a broken "make" program, hence the plural.c rule will
+    dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
+    dnl present or too old.
+    AC_CHECK_PROGS([INTLBISON], [bison])
+    if test -z "$INTLBISON"; then
+      ac_verc_fail=yes
+    else
+      dnl Found it, now check the version.
+      AC_MSG_CHECKING([version of bison])
+changequote(<<,>>)dnl
+      ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
+      case $ac_prog_version in
+        '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+        1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
+changequote([,])dnl
+           ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+        *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+      esac
+      AC_MSG_RESULT([$ac_prog_version])
+    fi
+    if test $ac_verc_fail = yes; then
+      INTLBISON=:
+    fi
+
+    dnl These rules are solely for the distribution goal.  While doing this
+    dnl we only have to keep exactly one list of the available catalogs
+    dnl in configure.in.
+    for lang in $ALL_LINGUAS; do
+      GMOFILES="$GMOFILES $lang.gmo"
+      POFILES="$POFILES $lang.po"
+    done
+
+    dnl Make all variables we use known to autoconf.
+    AC_SUBST(BUILD_INCLUDED_LIBINTL)
+    AC_SUBST(USE_INCLUDED_LIBINTL)
+    AC_SUBST(CATALOGS)
+    AC_SUBST(CATOBJEXT)
+    AC_SUBST(GMOFILES)
+    AC_SUBST(INTLLIBS)
+    AC_SUBST(INTLOBJS)
+    AC_SUBST(POFILES)
+    AC_SUBST(POSUB)
+
+    dnl For backward compatibility. Some configure.ins may be using this.
+    nls_cv_header_intl=
+    nls_cv_header_libgt=
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    DATADIRNAME=share
+    AC_SUBST(DATADIRNAME)
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INSTOBJEXT=.mo
+    AC_SUBST(INSTOBJEXT)
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    GENCAT=gencat
+    AC_SUBST(GENCAT)
+  ])
+
+dnl Usage: Just like AM_WITH_NLS, which see.
+AC_DEFUN([AM_GNU_GETTEXT],
+  [AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+   AC_REQUIRE([AC_PROG_CC])dnl
+   AC_REQUIRE([AC_CANONICAL_HOST])dnl
+   AC_REQUIRE([AC_PROG_RANLIB])dnl
+   AC_REQUIRE([AC_ISC_POSIX])dnl
+   AC_REQUIRE([AC_HEADER_STDC])dnl
+   AC_REQUIRE([AC_C_CONST])dnl
+   AC_REQUIRE([AC_C_INLINE])dnl
+   AC_REQUIRE([AC_TYPE_OFF_T])dnl
+   AC_REQUIRE([AC_TYPE_SIZE_T])dnl
+   AC_REQUIRE([AC_FUNC_ALLOCA])dnl
+   AC_REQUIRE([AC_FUNC_MMAP])dnl
+   AC_REQUIRE([jm_GLIBC21])dnl
+
+   AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
+stdlib.h string.h unistd.h sys/param.h])
+   AC_CHECK_FUNCS([feof_unlocked fgets_unlocked getcwd getegid geteuid \
+getgid getuid mempcpy munmap putenv setenv setlocale stpcpy strchr strcasecmp \
+strdup strtoul tsearch __argz_count __argz_stringify __argz_next])
+
+   AM_ICONV
+   AM_LANGINFO_CODESET
+   AM_LC_MESSAGES
+   AM_WITH_NLS([$1],[$2],[$3])
+
+   if test "x$CATOBJEXT" != "x"; then
+     if test "x$ALL_LINGUAS" = "x"; then
+       LINGUAS=
+     else
+       AC_MSG_CHECKING(for catalogs to be installed)
+       NEW_LINGUAS=
+       for presentlang in $ALL_LINGUAS; do
+         useit=no
+         for desiredlang in ${LINGUAS-$ALL_LINGUAS}; do
+           # Use the presentlang catalog if desiredlang is
+           #   a. equal to presentlang, or
+           #   b. a variant of presentlang (because in this case,
+           #      presentlang can be used as a fallback for messages
+           #      which are not translated in the desiredlang catalog).
+           case "$desiredlang" in
+             "$presentlang"*) useit=yes;;
+           esac
+         done
+         if test $useit = yes; then
+           NEW_LINGUAS="$NEW_LINGUAS $presentlang"
+         fi
+       done
+       LINGUAS=$NEW_LINGUAS
+       AC_MSG_RESULT($LINGUAS)
+     fi
+
+     dnl Construct list of names of catalog files to be constructed.
+     if test -n "$LINGUAS"; then
+       for lang in $LINGUAS; do CATALOGS="$CATALOGS $lang$CATOBJEXT"; done
+     fi
+   fi
+
+   dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
+   dnl find the mkinstalldirs script in another subdir but $(top_srcdir).
+   dnl Try to locate is.
+   MKINSTALLDIRS=
+   if test -n "$ac_aux_dir"; then
+     MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs"
+   fi
+   if test -z "$MKINSTALLDIRS"; then
+     MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
+   fi
+   AC_SUBST(MKINSTALLDIRS)
+
+   dnl Enable libtool support if the surrounding package wishes it.
+   INTL_LIBTOOL_SUFFIX_PREFIX=ifelse([$1], use-libtool, [l], [])
+   AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
+  ])