Edit: gettext.m4
# gettext.m4 serial 68 (gettext-0.19.8) dnl Copyright (C) 1995-2014, 2016 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 can be one of 'external', 'no-libtool', 'use-libtool'. The dnl default (if it is not specified or empty) is 'no-libtool'. dnl INTLSYMBOL should be 'external' for packages with no intl directory, dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory. 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). If INTLSYMBOL is 'no-libtool', a static library dnl $(top_builddir)/intl/libintl.a will be created. dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext dnl implementations (in libc or libintl) without the ngettext() function dnl will be ignored. If NEEDSYMBOL is specified and is dnl 'need-formatstring-macros', then GNU gettext implementations that don't dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored. dnl INTLDIR is used to find the intl libraries. If empty, dnl the value '$(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], [no-libtool], , [ifelse([$1], [use-libtool], , [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT ])])])])]) ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old], [AC_DIAGNOSE([obsolete], [Use of AM_GNU_GETTEXT without [external] argument is deprecated.])]) 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], ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]), [yes])) define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], [])) 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 only in autoconf >= 2.52 and not dnl 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.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD" LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $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], [$INCINTL]) fi dnl For backward compatibility. Some packages may be using this. AC_DEFINE([HAVE_GETTEXT], [1], [Define if the GNU gettext() function is already present or preinstalled.]) AC_DEFINE([HAVE_DCGETTEXT], [1], [Define if the GNU dcgettext() function is already present or preinstalled.]) fi dnl We need to process the po/ directory. POSUB=po fi ifelse(gt_included_intl, yes, [ dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL dnl to 'yes' because some of the testsuite requires it. if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then BUILD_INCLUDED_LIBINTL=yes fi dnl Make all variables we use known to autoconf. AC_SUBST([BUILD_INCLUDED_LIBINTL]) AC_SUBST([USE_INCLUDED_LIBINTL]) AC_SUBST([CATOBJEXT]) dnl For backward compatibility. Some configure.ins may be using this. nls_cv_header_intl= nls_cv_header_libgt= dnl For backward compatibility. Some Makefiles may be using this. DATADIRNAME=share AC_SUBST([DATADIRNAME]) dnl For backward compatibility. Some Makefiles may be using this. INSTOBJEXT=.mo AC_SUBST([INSTOBJEXT]) dnl For backward compatibility. Some Makefiles may be using this. GENCAT=gencat AC_SUBST([GENCAT]) dnl For backward compatibility. Some Makefiles may be using this. INTLOBJS= if test "$USE_INCLUDED_LIBINTL" = yes; then INTLOBJS="\$(GETTOBJS)" fi AC_SUBST([INTLOBJS]) dnl Enable libtool support if the surrounding package wishes it. INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX]) ]) 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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