gettext.m4 (15859B)
1 # gettext.m4 serial 68 (gettext-0.19.8) 2 dnl Copyright (C) 1995-2014, 2016 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 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 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 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 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION 165 extern int _nl_msg_cat_cntr; 166 extern int *_nl_domain_bindings; 167 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings) 168 #else 169 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 170 #endif 171 $gt_revision_test_code 172 ]], 173 [[ 174 bindtextdomain ("", ""); 175 return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION 176 ]])], 177 [eval "$gt_func_gnugettext_libc=yes"], 178 [eval "$gt_func_gnugettext_libc=no"])]) 179 180 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then 181 dnl Sometimes libintl requires libiconv, so first search for libiconv. 182 ifelse(gt_included_intl, yes, , [ 183 AM_ICONV_LINK 184 ]) 185 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL 186 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) 187 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL 188 dnl even if libiconv doesn't exist. 189 AC_LIB_LINKFLAGS_BODY([intl]) 190 AC_CACHE_CHECK([for GNU gettext in libintl], 191 [$gt_func_gnugettext_libintl], 192 [gt_save_CPPFLAGS="$CPPFLAGS" 193 CPPFLAGS="$CPPFLAGS $INCINTL" 194 gt_save_LIBS="$LIBS" 195 LIBS="$LIBS $LIBINTL" 196 dnl Now see whether libintl exists and does not depend on libiconv. 197 AC_LINK_IFELSE( 198 [AC_LANG_PROGRAM( 199 [[ 200 #include <libintl.h> 201 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION 202 extern int _nl_msg_cat_cntr; 203 extern 204 #ifdef __cplusplus 205 "C" 206 #endif 207 const char *_nl_expand_alias (const char *); 208 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) 209 #else 210 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 211 #endif 212 $gt_revision_test_code 213 ]], 214 [[ 215 bindtextdomain ("", ""); 216 return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION 217 ]])], 218 [eval "$gt_func_gnugettext_libintl=yes"], 219 [eval "$gt_func_gnugettext_libintl=no"]) 220 dnl Now see whether libintl exists and depends on libiconv. 221 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then 222 LIBS="$LIBS $LIBICONV" 223 AC_LINK_IFELSE( 224 [AC_LANG_PROGRAM( 225 [[ 226 #include <libintl.h> 227 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION 228 extern int _nl_msg_cat_cntr; 229 extern 230 #ifdef __cplusplus 231 "C" 232 #endif 233 const char *_nl_expand_alias (const char *); 234 #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) 235 #else 236 #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 237 #endif 238 $gt_revision_test_code 239 ]], 240 [[ 241 bindtextdomain ("", ""); 242 return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION 243 ]])], 244 [LIBINTL="$LIBINTL $LIBICONV" 245 LTLIBINTL="$LTLIBINTL $LTLIBICONV" 246 eval "$gt_func_gnugettext_libintl=yes" 247 ]) 248 fi 249 CPPFLAGS="$gt_save_CPPFLAGS" 250 LIBS="$gt_save_LIBS"]) 251 fi 252 253 dnl If an already present or preinstalled GNU gettext() is found, 254 dnl use it. But if this macro is used in GNU gettext, and GNU 255 dnl gettext is already preinstalled in libintl, we update this 256 dnl libintl. (Cf. the install rule in intl/Makefile.in.) 257 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ 258 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ 259 && test "$PACKAGE" != gettext-runtime \ 260 && test "$PACKAGE" != gettext-tools; }; then 261 gt_use_preinstalled_gnugettext=yes 262 else 263 dnl Reset the values set by searching for libintl. 264 LIBINTL= 265 LTLIBINTL= 266 INCINTL= 267 fi 268 269 ifelse(gt_included_intl, yes, [ 270 if test "$gt_use_preinstalled_gnugettext" != "yes"; then 271 dnl GNU gettext is not found in the C library. 272 dnl Fall back on included GNU gettext library. 273 nls_cv_use_gnu_gettext=yes 274 fi 275 fi 276 277 if test "$nls_cv_use_gnu_gettext" = "yes"; then 278 dnl Mark actions used to generate GNU NLS library. 279 BUILD_INCLUDED_LIBINTL=yes 280 USE_INCLUDED_LIBINTL=yes 281 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD" 282 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD" 283 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` 284 fi 285 286 CATOBJEXT= 287 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 288 || test "$nls_cv_use_gnu_gettext" = "yes"; then 289 dnl Mark actions to use GNU gettext tools. 290 CATOBJEXT=.gmo 291 fi 292 ]) 293 294 if test -n "$INTL_MACOSX_LIBS"; then 295 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 296 || test "$nls_cv_use_gnu_gettext" = "yes"; then 297 dnl Some extra flags are needed during linking. 298 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" 299 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" 300 fi 301 fi 302 303 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 304 || test "$nls_cv_use_gnu_gettext" = "yes"; then 305 AC_DEFINE([ENABLE_NLS], [1], 306 [Define to 1 if translation of program messages to the user's native language 307 is requested.]) 308 else 309 USE_NLS=no 310 fi 311 fi 312 313 AC_MSG_CHECKING([whether to use NLS]) 314 AC_MSG_RESULT([$USE_NLS]) 315 if test "$USE_NLS" = "yes"; then 316 AC_MSG_CHECKING([where the gettext function comes from]) 317 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 318 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 319 gt_source="external libintl" 320 else 321 gt_source="libc" 322 fi 323 else 324 gt_source="included intl directory" 325 fi 326 AC_MSG_RESULT([$gt_source]) 327 fi 328 329 if test "$USE_NLS" = "yes"; then 330 331 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 332 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 333 AC_MSG_CHECKING([how to link with libintl]) 334 AC_MSG_RESULT([$LIBINTL]) 335 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) 336 fi 337 338 dnl For backward compatibility. Some packages may be using this. 339 AC_DEFINE([HAVE_GETTEXT], [1], 340 [Define if the GNU gettext() function is already present or preinstalled.]) 341 AC_DEFINE([HAVE_DCGETTEXT], [1], 342 [Define if the GNU dcgettext() function is already present or preinstalled.]) 343 fi 344 345 dnl We need to process the po/ directory. 346 POSUB=po 347 fi 348 349 ifelse(gt_included_intl, yes, [ 350 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL 351 dnl to 'yes' because some of the testsuite requires it. 352 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then 353 BUILD_INCLUDED_LIBINTL=yes 354 fi 355 356 dnl Make all variables we use known to autoconf. 357 AC_SUBST([BUILD_INCLUDED_LIBINTL]) 358 AC_SUBST([USE_INCLUDED_LIBINTL]) 359 AC_SUBST([CATOBJEXT]) 360 361 dnl For backward compatibility. Some configure.ins may be using this. 362 nls_cv_header_intl= 363 nls_cv_header_libgt= 364 365 dnl For backward compatibility. Some Makefiles may be using this. 366 DATADIRNAME=share 367 AC_SUBST([DATADIRNAME]) 368 369 dnl For backward compatibility. Some Makefiles may be using this. 370 INSTOBJEXT=.mo 371 AC_SUBST([INSTOBJEXT]) 372 373 dnl For backward compatibility. Some Makefiles may be using this. 374 GENCAT=gencat 375 AC_SUBST([GENCAT]) 376 377 dnl For backward compatibility. Some Makefiles may be using this. 378 INTLOBJS= 379 if test "$USE_INCLUDED_LIBINTL" = yes; then 380 INTLOBJS="\$(GETTOBJS)" 381 fi 382 AC_SUBST([INTLOBJS]) 383 384 dnl Enable libtool support if the surrounding package wishes it. 385 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix 386 AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX]) 387 ]) 388 389 dnl For backward compatibility. Some Makefiles may be using this. 390 INTLLIBS="$LIBINTL" 391 AC_SUBST([INTLLIBS]) 392 393 dnl Make all documented variables known to autoconf. 394 AC_SUBST([LIBINTL]) 395 AC_SUBST([LTLIBINTL]) 396 AC_SUBST([POSUB]) 397 ]) 398 399 400 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. 401 m4_define([gt_NEEDS_INIT], 402 [ 403 m4_divert_text([DEFAULTS], [gt_needs=]) 404 m4_define([gt_NEEDS_INIT], []) 405 ]) 406 407 408 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) 409 AC_DEFUN([AM_GNU_GETTEXT_NEED], 410 [ 411 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) 412 ]) 413 414 415 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) 416 AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) 417 418 419 dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version]) 420 AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], [])