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crosstool-ng/m4/gettext.m4
Bryan Hundven 59b664806c Update copied m4 files and README 
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
2022-10-27 21:28:42 +13:00

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# gettext.m4 serial 71 (gettext-0.20.2)
dnl Copyright (C) 1995-2014, 2016, 2018-2020 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 Lesser 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 Lesser 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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