1 # gettext.m4 serial 66 (gettext-0.18.2) 2 dnl Copyright (C) 1995-2012 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 (a] cygnus.com>, 1995-2000. 18 dnl Bruno Haible <haible (a] 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 Mac OS 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_LINK_IFELSE( 161 [AC_LANG_PROGRAM( 162 [[ 163 #include <libintl.h> 164 $gt_revision_test_code 165 extern int _nl_msg_cat_cntr; 166 extern int *_nl_domain_bindings; 167 ]], 168 [[ 169 bindtextdomain ("", ""); 170 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings 171 ]])], 172 [eval "$gt_func_gnugettext_libc=yes"], 173 [eval "$gt_func_gnugettext_libc=no"])]) 174 175 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then 176 dnl Sometimes libintl requires libiconv, so first search for libiconv. 177 ifelse(gt_included_intl, yes, , [ 178 AM_ICONV_LINK 179 ]) 180 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL 181 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) 182 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL 183 dnl even if libiconv doesn't exist. 184 AC_LIB_LINKFLAGS_BODY([intl]) 185 AC_CACHE_CHECK([for GNU gettext in libintl], 186 [$gt_func_gnugettext_libintl], 187 [gt_save_CPPFLAGS="$CPPFLAGS" 188 CPPFLAGS="$CPPFLAGS $INCINTL" 189 gt_save_LIBS="$LIBS" 190 LIBS="$LIBS $LIBINTL" 191 dnl Now see whether libintl exists and does not depend on libiconv. 192 AC_LINK_IFELSE( 193 [AC_LANG_PROGRAM( 194 [[ 195 #include <libintl.h> 196 $gt_revision_test_code 197 extern int _nl_msg_cat_cntr; 198 extern 199 #ifdef __cplusplus 200 "C" 201 #endif 202 const char *_nl_expand_alias (const char *); 203 ]], 204 [[ 205 bindtextdomain ("", ""); 206 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("") 207 ]])], 208 [eval "$gt_func_gnugettext_libintl=yes"], 209 [eval "$gt_func_gnugettext_libintl=no"]) 210 dnl Now see whether libintl exists and depends on libiconv. 211 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then 212 LIBS="$LIBS $LIBICONV" 213 AC_LINK_IFELSE( 214 [AC_LANG_PROGRAM( 215 [[ 216 #include <libintl.h> 217 $gt_revision_test_code 218 extern int _nl_msg_cat_cntr; 219 extern 220 #ifdef __cplusplus 221 "C" 222 #endif 223 const char *_nl_expand_alias (const char *); 224 ]], 225 [[ 226 bindtextdomain ("", ""); 227 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("") 228 ]])], 229 [LIBINTL="$LIBINTL $LIBICONV" 230 LTLIBINTL="$LTLIBINTL $LTLIBICONV" 231 eval "$gt_func_gnugettext_libintl=yes" 232 ]) 233 fi 234 CPPFLAGS="$gt_save_CPPFLAGS" 235 LIBS="$gt_save_LIBS"]) 236 fi 237 238 dnl If an already present or preinstalled GNU gettext() is found, 239 dnl use it. But if this macro is used in GNU gettext, and GNU 240 dnl gettext is already preinstalled in libintl, we update this 241 dnl libintl. (Cf. the install rule in intl/Makefile.in.) 242 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ 243 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ 244 && test "$PACKAGE" != gettext-runtime \ 245 && test "$PACKAGE" != gettext-tools; }; then 246 gt_use_preinstalled_gnugettext=yes 247 else 248 dnl Reset the values set by searching for libintl. 249 LIBINTL= 250 LTLIBINTL= 251 INCINTL= 252 fi 253 254 ifelse(gt_included_intl, yes, [ 255 if test "$gt_use_preinstalled_gnugettext" != "yes"; then 256 dnl GNU gettext is not found in the C library. 257 dnl Fall back on included GNU gettext library. 258 nls_cv_use_gnu_gettext=yes 259 fi 260 fi 261 262 if test "$nls_cv_use_gnu_gettext" = "yes"; then 263 dnl Mark actions used to generate GNU NLS library. 264 BUILD_INCLUDED_LIBINTL=yes 265 USE_INCLUDED_LIBINTL=yes 266 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD" 267 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD" 268 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` 269 fi 270 271 CATOBJEXT= 272 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 273 || test "$nls_cv_use_gnu_gettext" = "yes"; then 274 dnl Mark actions to use GNU gettext tools. 275 CATOBJEXT=.gmo 276 fi 277 ]) 278 279 if test -n "$INTL_MACOSX_LIBS"; then 280 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 281 || test "$nls_cv_use_gnu_gettext" = "yes"; then 282 dnl Some extra flags are needed during linking. 283 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" 284 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" 285 fi 286 fi 287 288 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 289 || test "$nls_cv_use_gnu_gettext" = "yes"; then 290 AC_DEFINE([ENABLE_NLS], [1], 291 [Define to 1 if translation of program messages to the user's native language 292 is requested.]) 293 else 294 USE_NLS=no 295 fi 296 fi 297 298 AC_MSG_CHECKING([whether to use NLS]) 299 AC_MSG_RESULT([$USE_NLS]) 300 if test "$USE_NLS" = "yes"; then 301 AC_MSG_CHECKING([where the gettext function comes from]) 302 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 303 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 304 gt_source="external libintl" 305 else 306 gt_source="libc" 307 fi 308 else 309 gt_source="included intl directory" 310 fi 311 AC_MSG_RESULT([$gt_source]) 312 fi 313 314 if test "$USE_NLS" = "yes"; then 315 316 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 317 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 318 AC_MSG_CHECKING([how to link with libintl]) 319 AC_MSG_RESULT([$LIBINTL]) 320 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) 321 fi 322 323 dnl For backward compatibility. Some packages may be using this. 324 AC_DEFINE([HAVE_GETTEXT], [1], 325 [Define if the GNU gettext() function is already present or preinstalled.]) 326 AC_DEFINE([HAVE_DCGETTEXT], [1], 327 [Define if the GNU dcgettext() function is already present or preinstalled.]) 328 fi 329 330 dnl We need to process the po/ directory. 331 POSUB=po 332 fi 333 334 ifelse(gt_included_intl, yes, [ 335 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL 336 dnl to 'yes' because some of the testsuite requires it. 337 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then 338 BUILD_INCLUDED_LIBINTL=yes 339 fi 340 341 dnl Make all variables we use known to autoconf. 342 AC_SUBST([BUILD_INCLUDED_LIBINTL]) 343 AC_SUBST([USE_INCLUDED_LIBINTL]) 344 AC_SUBST([CATOBJEXT]) 345 346 dnl For backward compatibility. Some configure.ins may be using this. 347 nls_cv_header_intl= 348 nls_cv_header_libgt= 349 350 dnl For backward compatibility. Some Makefiles may be using this. 351 DATADIRNAME=share 352 AC_SUBST([DATADIRNAME]) 353 354 dnl For backward compatibility. Some Makefiles may be using this. 355 INSTOBJEXT=.mo 356 AC_SUBST([INSTOBJEXT]) 357 358 dnl For backward compatibility. Some Makefiles may be using this. 359 GENCAT=gencat 360 AC_SUBST([GENCAT]) 361 362 dnl For backward compatibility. Some Makefiles may be using this. 363 INTLOBJS= 364 if test "$USE_INCLUDED_LIBINTL" = yes; then 365 INTLOBJS="\$(GETTOBJS)" 366 fi 367 AC_SUBST([INTLOBJS]) 368 369 dnl Enable libtool support if the surrounding package wishes it. 370 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix 371 AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX]) 372 ]) 373 374 dnl For backward compatibility. Some Makefiles may be using this. 375 INTLLIBS="$LIBINTL" 376 AC_SUBST([INTLLIBS]) 377 378 dnl Make all documented variables known to autoconf. 379 AC_SUBST([LIBINTL]) 380 AC_SUBST([LTLIBINTL]) 381 AC_SUBST([POSUB]) 382 ]) 383 384 385 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. 386 m4_define([gt_NEEDS_INIT], 387 [ 388 m4_divert_text([DEFAULTS], [gt_needs=]) 389 m4_define([gt_NEEDS_INIT], []) 390 ]) 391 392 393 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) 394 AC_DEFUN([AM_GNU_GETTEXT_NEED], 395 [ 396 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) 397 ]) 398 399 400 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) 401 AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) 402
