gettext.m4 (14938B)
1 # gettext.m4 serial 63 (gettext-0.18) 2 dnl Copyright (C) 1995-2010 Free Software Foundation, Inc. 3 dnl This file is free software; the Free Software Foundation 4 dnl gives unlimited permission to copy and/or distribute it, 5 dnl with or without modifications, as long as this notice is preserved. 6 dnl 7 dnl This file can can be used in projects which are not available under 8 dnl the GNU General Public License or the GNU Library General Public 9 dnl License but which still want to provide support for the GNU gettext 10 dnl functionality. 11 dnl Please note that the actual code of the GNU gettext library is covered 12 dnl by the GNU Library General Public License, and the rest of the GNU 13 dnl gettext package package is covered by the GNU General Public License. 14 dnl They are *not* in the public domain. 15 16 dnl Authors: 17 dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000. 18 dnl Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010. 19 20 dnl Macro to add for using GNU gettext. 21 22 dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]). 23 dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The 24 dnl default (if it is not specified or empty) is 'no-libtool'. 25 dnl INTLSYMBOL should be 'external' for packages with no intl directory, 26 dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory. 27 dnl If INTLSYMBOL is 'use-libtool', then a libtool library 28 dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static, 29 dnl depending on --{enable,disable}-{shared,static} and on the presence of 30 dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library 31 dnl $(top_builddir)/intl/libintl.a will be created. 32 dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext 33 dnl implementations (in libc or libintl) without the ngettext() function 34 dnl will be ignored. If NEEDSYMBOL is specified and is 35 dnl 'need-formatstring-macros', then GNU gettext implementations that don't 36 dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored. 37 dnl INTLDIR is used to find the intl libraries. If empty, 38 dnl the value `$(top_builddir)/intl/' is used. 39 dnl 40 dnl The result of the configuration is one of three cases: 41 dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled 42 dnl and used. 43 dnl Catalog format: GNU --> install in $(datadir) 44 dnl Catalog extension: .mo after installation, .gmo in source tree 45 dnl 2) GNU gettext has been found in the system's C library. 46 dnl Catalog format: GNU --> install in $(datadir) 47 dnl Catalog extension: .mo after installation, .gmo in source tree 48 dnl 3) No internationalization, always use English msgid. 49 dnl Catalog format: none 50 dnl Catalog extension: none 51 dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur. 52 dnl The use of .gmo is historical (it was needed to avoid overwriting the 53 dnl GNU format catalogs when building on a platform with an X/Open gettext), 54 dnl but we keep it in order not to force irrelevant filename changes on the 55 dnl maintainers. 56 dnl 57 AC_DEFUN([AM_GNU_GETTEXT], 58 [ 59 dnl Argument checking. 60 ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], , 61 [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT 62 ])])])])]) 63 ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old], 64 [AC_DIAGNOSE([obsolete], [Use of AM_GNU_GETTEXT without [external] argument is deprecated.])]) 65 ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], , 66 [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT 67 ])])])]) 68 define([gt_included_intl], 69 ifelse([$1], [external], 70 ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]), 71 [yes])) 72 define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], [])) 73 gt_NEEDS_INIT 74 AM_GNU_GETTEXT_NEED([$2]) 75 76 AC_REQUIRE([AM_PO_SUBDIRS])dnl 77 ifelse(gt_included_intl, yes, [ 78 AC_REQUIRE([AM_INTL_SUBDIR])dnl 79 ]) 80 81 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. 82 AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) 83 AC_REQUIRE([AC_LIB_RPATH]) 84 85 dnl Sometimes libintl requires libiconv, so first search for libiconv. 86 dnl Ideally we would do this search only after the 87 dnl if test "$USE_NLS" = "yes"; then 88 dnl if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then 89 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT 90 dnl the configure script would need to contain the same shell code 91 dnl again, outside any 'if'. There are two solutions: 92 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'. 93 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE. 94 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not 95 dnl documented, we avoid it. 96 ifelse(gt_included_intl, yes, , [ 97 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) 98 ]) 99 100 dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation. 101 gt_INTL_MACOSX 102 103 dnl Set USE_NLS. 104 AC_REQUIRE([AM_NLS]) 105 106 ifelse(gt_included_intl, yes, [ 107 BUILD_INCLUDED_LIBINTL=no 108 USE_INCLUDED_LIBINTL=no 109 ]) 110 LIBINTL= 111 LTLIBINTL= 112 POSUB= 113 114 dnl Add a version number to the cache macros. 115 case " $gt_needs " in 116 *" need-formatstring-macros "*) gt_api_version=3 ;; 117 *" need-ngettext "*) gt_api_version=2 ;; 118 *) gt_api_version=1 ;; 119 esac 120 gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc" 121 gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl" 122 123 dnl If we use NLS figure out what method 124 if test "$USE_NLS" = "yes"; then 125 gt_use_preinstalled_gnugettext=no 126 ifelse(gt_included_intl, yes, [ 127 AC_MSG_CHECKING([whether included gettext is requested]) 128 AC_ARG_WITH([included-gettext], 129 [ --with-included-gettext use the GNU gettext library included here], 130 nls_cv_force_use_gnu_gettext=$withval, 131 nls_cv_force_use_gnu_gettext=no) 132 AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext]) 133 134 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" 135 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then 136 ]) 137 dnl User does not insist on using GNU NLS library. Figure out what 138 dnl to use. If GNU gettext is available we use this. Else we have 139 dnl to fall back to GNU NLS library. 140 141 if test $gt_api_version -ge 3; then 142 gt_revision_test_code=' 143 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION 144 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) 145 #endif 146 changequote(,)dnl 147 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; 148 changequote([,])dnl 149 ' 150 else 151 gt_revision_test_code= 152 fi 153 if test $gt_api_version -ge 2; then 154 gt_expression_test_code=' + * ngettext ("", "", 0)' 155 else 156 gt_expression_test_code= 157 fi 158 159 AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc], 160 [AC_TRY_LINK([#include <libintl.h> 161 $gt_revision_test_code 162 extern int _nl_msg_cat_cntr; 163 extern int *_nl_domain_bindings;], 164 [bindtextdomain ("", ""); 165 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings], 166 [eval "$gt_func_gnugettext_libc=yes"], 167 [eval "$gt_func_gnugettext_libc=no"])]) 168 169 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then 170 dnl Sometimes libintl requires libiconv, so first search for libiconv. 171 ifelse(gt_included_intl, yes, , [ 172 AM_ICONV_LINK 173 ]) 174 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL 175 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) 176 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL 177 dnl even if libiconv doesn't exist. 178 AC_LIB_LINKFLAGS_BODY([intl]) 179 AC_CACHE_CHECK([for GNU gettext in libintl], 180 [$gt_func_gnugettext_libintl], 181 [gt_save_CPPFLAGS="$CPPFLAGS" 182 CPPFLAGS="$CPPFLAGS $INCINTL" 183 gt_save_LIBS="$LIBS" 184 LIBS="$LIBS $LIBINTL" 185 dnl Now see whether libintl exists and does not depend on libiconv. 186 AC_TRY_LINK([#include <libintl.h> 187 $gt_revision_test_code 188 extern int _nl_msg_cat_cntr; 189 extern 190 #ifdef __cplusplus 191 "C" 192 #endif 193 const char *_nl_expand_alias (const char *);], 194 [bindtextdomain ("", ""); 195 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")], 196 [eval "$gt_func_gnugettext_libintl=yes"], 197 [eval "$gt_func_gnugettext_libintl=no"]) 198 dnl Now see whether libintl exists and depends on libiconv. 199 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then 200 LIBS="$LIBS $LIBICONV" 201 AC_TRY_LINK([#include <libintl.h> 202 $gt_revision_test_code 203 extern int _nl_msg_cat_cntr; 204 extern 205 #ifdef __cplusplus 206 "C" 207 #endif 208 const char *_nl_expand_alias (const char *);], 209 [bindtextdomain ("", ""); 210 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")], 211 [LIBINTL="$LIBINTL $LIBICONV" 212 LTLIBINTL="$LTLIBINTL $LTLIBICONV" 213 eval "$gt_func_gnugettext_libintl=yes" 214 ]) 215 fi 216 CPPFLAGS="$gt_save_CPPFLAGS" 217 LIBS="$gt_save_LIBS"]) 218 fi 219 220 dnl If an already present or preinstalled GNU gettext() is found, 221 dnl use it. But if this macro is used in GNU gettext, and GNU 222 dnl gettext is already preinstalled in libintl, we update this 223 dnl libintl. (Cf. the install rule in intl/Makefile.in.) 224 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ 225 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ 226 && test "$PACKAGE" != gettext-runtime \ 227 && test "$PACKAGE" != gettext-tools; }; then 228 gt_use_preinstalled_gnugettext=yes 229 else 230 dnl Reset the values set by searching for libintl. 231 LIBINTL= 232 LTLIBINTL= 233 INCINTL= 234 fi 235 236 ifelse(gt_included_intl, yes, [ 237 if test "$gt_use_preinstalled_gnugettext" != "yes"; then 238 dnl GNU gettext is not found in the C library. 239 dnl Fall back on included GNU gettext library. 240 nls_cv_use_gnu_gettext=yes 241 fi 242 fi 243 244 if test "$nls_cv_use_gnu_gettext" = "yes"; then 245 dnl Mark actions used to generate GNU NLS library. 246 BUILD_INCLUDED_LIBINTL=yes 247 USE_INCLUDED_LIBINTL=yes 248 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD" 249 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD" 250 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` 251 fi 252 253 CATOBJEXT= 254 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 255 || test "$nls_cv_use_gnu_gettext" = "yes"; then 256 dnl Mark actions to use GNU gettext tools. 257 CATOBJEXT=.gmo 258 fi 259 ]) 260 261 if test -n "$INTL_MACOSX_LIBS"; then 262 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 263 || test "$nls_cv_use_gnu_gettext" = "yes"; then 264 dnl Some extra flags are needed during linking. 265 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" 266 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" 267 fi 268 fi 269 270 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 271 || test "$nls_cv_use_gnu_gettext" = "yes"; then 272 AC_DEFINE([ENABLE_NLS], [1], 273 [Define to 1 if translation of program messages to the user's native language 274 is requested.]) 275 else 276 USE_NLS=no 277 fi 278 fi 279 280 AC_MSG_CHECKING([whether to use NLS]) 281 AC_MSG_RESULT([$USE_NLS]) 282 if test "$USE_NLS" = "yes"; then 283 AC_MSG_CHECKING([where the gettext function comes from]) 284 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 285 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 286 gt_source="external libintl" 287 else 288 gt_source="libc" 289 fi 290 else 291 gt_source="included intl directory" 292 fi 293 AC_MSG_RESULT([$gt_source]) 294 fi 295 296 if test "$USE_NLS" = "yes"; then 297 298 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 299 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 300 AC_MSG_CHECKING([how to link with libintl]) 301 AC_MSG_RESULT([$LIBINTL]) 302 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) 303 fi 304 305 dnl For backward compatibility. Some packages may be using this. 306 AC_DEFINE([HAVE_GETTEXT], [1], 307 [Define if the GNU gettext() function is already present or preinstalled.]) 308 AC_DEFINE([HAVE_DCGETTEXT], [1], 309 [Define if the GNU dcgettext() function is already present or preinstalled.]) 310 fi 311 312 dnl We need to process the po/ directory. 313 POSUB=po 314 fi 315 316 ifelse(gt_included_intl, yes, [ 317 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL 318 dnl to 'yes' because some of the testsuite requires it. 319 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then 320 BUILD_INCLUDED_LIBINTL=yes 321 fi 322 323 dnl Make all variables we use known to autoconf. 324 AC_SUBST([BUILD_INCLUDED_LIBINTL]) 325 AC_SUBST([USE_INCLUDED_LIBINTL]) 326 AC_SUBST([CATOBJEXT]) 327 328 dnl For backward compatibility. Some configure.ins may be using this. 329 nls_cv_header_intl= 330 nls_cv_header_libgt= 331 332 dnl For backward compatibility. Some Makefiles may be using this. 333 DATADIRNAME=share 334 AC_SUBST([DATADIRNAME]) 335 336 dnl For backward compatibility. Some Makefiles may be using this. 337 INSTOBJEXT=.mo 338 AC_SUBST([INSTOBJEXT]) 339 340 dnl For backward compatibility. Some Makefiles may be using this. 341 GENCAT=gencat 342 AC_SUBST([GENCAT]) 343 344 dnl For backward compatibility. Some Makefiles may be using this. 345 INTLOBJS= 346 if test "$USE_INCLUDED_LIBINTL" = yes; then 347 INTLOBJS="\$(GETTOBJS)" 348 fi 349 AC_SUBST([INTLOBJS]) 350 351 dnl Enable libtool support if the surrounding package wishes it. 352 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix 353 AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX]) 354 ]) 355 356 dnl For backward compatibility. Some Makefiles may be using this. 357 INTLLIBS="$LIBINTL" 358 AC_SUBST([INTLLIBS]) 359 360 dnl Make all documented variables known to autoconf. 361 AC_SUBST([LIBINTL]) 362 AC_SUBST([LTLIBINTL]) 363 AC_SUBST([POSUB]) 364 ]) 365 366 367 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. 368 m4_define([gt_NEEDS_INIT], 369 [ 370 m4_divert_text([DEFAULTS], [gt_needs=]) 371 m4_define([gt_NEEDS_INIT], []) 372 ]) 373 374 375 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) 376 AC_DEFUN([AM_GNU_GETTEXT_NEED], 377 [ 378 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) 379 ]) 380 381 382 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) 383 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])