1 # gettext.m4 serial 60 (gettext-0.17) 2 dnl Copyright (C) 1995-2007 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. 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([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], , 64 [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT 65 ])])])]) 66 define([gt_included_intl], 67 ifelse([$1], [external], 68 ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]), 69 [yes])) 70 define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], [])) 71 gt_NEEDS_INIT 72 AM_GNU_GETTEXT_NEED([$2]) 73 74 AC_REQUIRE([AM_PO_SUBDIRS])dnl 75 ifelse(gt_included_intl, yes, [ 76 AC_REQUIRE([AM_INTL_SUBDIR])dnl 77 ]) 78 79 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. 80 AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) 81 AC_REQUIRE([AC_LIB_RPATH]) 82 83 dnl Sometimes libintl requires libiconv, so first search for libiconv. 84 dnl Ideally we would do this search only after the 85 dnl if test "$USE_NLS" = "yes"; then 86 dnl if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then 87 dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT 88 dnl the configure script would need to contain the same shell code 89 dnl again, outside any 'if'. There are two solutions: 90 dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'. 91 dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE. 92 dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not 93 dnl documented, we avoid it. 94 ifelse(gt_included_intl, yes, , [ 95 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) 96 ]) 97 98 dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation. 99 gt_INTL_MACOSX 100 101 dnl Set USE_NLS. 102 AC_REQUIRE([AM_NLS]) 103 104 ifelse(gt_included_intl, yes, [ 105 BUILD_INCLUDED_LIBINTL=no 106 USE_INCLUDED_LIBINTL=no 107 ]) 108 LIBINTL= 109 LTLIBINTL= 110 POSUB= 111 112 dnl Add a version number to the cache macros. 113 case " $gt_needs " in 114 *" need-formatstring-macros "*) gt_api_version=3 ;; 115 *" need-ngettext "*) gt_api_version=2 ;; 116 *) gt_api_version=1 ;; 117 esac 118 gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc" 119 gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl" 120 121 dnl If we use NLS figure out what method 122 if test "$USE_NLS" = "yes"; then 123 gt_use_preinstalled_gnugettext=no 124 ifelse(gt_included_intl, yes, [ 125 AC_MSG_CHECKING([whether included gettext is requested]) 126 AC_ARG_WITH(included-gettext, 127 [ --with-included-gettext use the GNU gettext library included here], 128 nls_cv_force_use_gnu_gettext=$withval, 129 nls_cv_force_use_gnu_gettext=no) 130 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext) 131 132 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" 133 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then 134 ]) 135 dnl User does not insist on using GNU NLS library. Figure out what 136 dnl to use. If GNU gettext is available we use this. Else we have 137 dnl to fall back to GNU NLS library. 138 139 if test $gt_api_version -ge 3; then 140 gt_revision_test_code=' 141 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION 142 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) 143 #endif 144 changequote(,)dnl 145 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; 146 changequote([,])dnl 147 ' 148 else 149 gt_revision_test_code= 150 fi 151 if test $gt_api_version -ge 2; then 152 gt_expression_test_code=' + * ngettext ("", "", 0)' 153 else 154 gt_expression_test_code= 155 fi 156 157 AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc], 158 [AC_TRY_LINK([#include <libintl.h> 159 $gt_revision_test_code 160 extern int _nl_msg_cat_cntr; 161 extern int *_nl_domain_bindings;], 162 [bindtextdomain ("", ""); 163 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings], 164 [eval "$gt_func_gnugettext_libc=yes"], 165 [eval "$gt_func_gnugettext_libc=no"])]) 166 167 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then 168 dnl Sometimes libintl requires libiconv, so first search for libiconv. 169 ifelse(gt_included_intl, yes, , [ 170 AM_ICONV_LINK 171 ]) 172 dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL 173 dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) 174 dnl because that would add "-liconv" to LIBINTL and LTLIBINTL 175 dnl even if libiconv doesn't exist. 176 AC_LIB_LINKFLAGS_BODY([intl]) 177 AC_CACHE_CHECK([for GNU gettext in libintl], 178 [$gt_func_gnugettext_libintl], 179 [gt_save_CPPFLAGS="$CPPFLAGS" 180 CPPFLAGS="$CPPFLAGS $INCINTL" 181 gt_save_LIBS="$LIBS" 182 LIBS="$LIBS $LIBINTL" 183 dnl Now see whether libintl exists and does not depend on libiconv. 184 AC_TRY_LINK([#include <libintl.h> 185 $gt_revision_test_code 186 extern int _nl_msg_cat_cntr; 187 extern 188 #ifdef __cplusplus 189 "C" 190 #endif 191 const char *_nl_expand_alias (const char *);], 192 [bindtextdomain ("", ""); 193 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")], 194 [eval "$gt_func_gnugettext_libintl=yes"], 195 [eval "$gt_func_gnugettext_libintl=no"]) 196 dnl Now see whether libintl exists and depends on libiconv. 197 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then 198 LIBS="$LIBS $LIBICONV" 199 AC_TRY_LINK([#include <libintl.h> 200 $gt_revision_test_code 201 extern int _nl_msg_cat_cntr; 202 extern 203 #ifdef __cplusplus 204 "C" 205 #endif 206 const char *_nl_expand_alias (const char *);], 207 [bindtextdomain ("", ""); 208 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")], 209 [LIBINTL="$LIBINTL $LIBICONV" 210 LTLIBINTL="$LTLIBINTL $LTLIBICONV" 211 eval "$gt_func_gnugettext_libintl=yes" 212 ]) 213 fi 214 CPPFLAGS="$gt_save_CPPFLAGS" 215 LIBS="$gt_save_LIBS"]) 216 fi 217 218 dnl If an already present or preinstalled GNU gettext() is found, 219 dnl use it. But if this macro is used in GNU gettext, and GNU 220 dnl gettext is already preinstalled in libintl, we update this 221 dnl libintl. (Cf. the install rule in intl/Makefile.in.) 222 if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ 223 || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ 224 && test "$PACKAGE" != gettext-runtime \ 225 && test "$PACKAGE" != gettext-tools; }; then 226 gt_use_preinstalled_gnugettext=yes 227 else 228 dnl Reset the values set by searching for libintl. 229 LIBINTL= 230 LTLIBINTL= 231 INCINTL= 232 fi 233 234 ifelse(gt_included_intl, yes, [ 235 if test "$gt_use_preinstalled_gnugettext" != "yes"; then 236 dnl GNU gettext is not found in the C library. 237 dnl Fall back on included GNU gettext library. 238 nls_cv_use_gnu_gettext=yes 239 fi 240 fi 241 242 if test "$nls_cv_use_gnu_gettext" = "yes"; then 243 dnl Mark actions used to generate GNU NLS library. 244 BUILD_INCLUDED_LIBINTL=yes 245 USE_INCLUDED_LIBINTL=yes 246 LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD" 247 LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD" 248 LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` 249 fi 250 251 CATOBJEXT= 252 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 253 || test "$nls_cv_use_gnu_gettext" = "yes"; then 254 dnl Mark actions to use GNU gettext tools. 255 CATOBJEXT=.gmo 256 fi 257 ]) 258 259 if test -n "$INTL_MACOSX_LIBS"; then 260 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 261 || test "$nls_cv_use_gnu_gettext" = "yes"; then 262 dnl Some extra flags are needed during linking. 263 LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" 264 LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" 265 fi 266 fi 267 268 if test "$gt_use_preinstalled_gnugettext" = "yes" \ 269 || test "$nls_cv_use_gnu_gettext" = "yes"; then 270 AC_DEFINE(ENABLE_NLS, 1, 271 [Define to 1 if translation of program messages to the user's native language 272 is requested.]) 273 else 274 USE_NLS=no 275 fi 276 fi 277 278 AC_MSG_CHECKING([whether to use NLS]) 279 AC_MSG_RESULT([$USE_NLS]) 280 if test "$USE_NLS" = "yes"; then 281 AC_MSG_CHECKING([where the gettext function comes from]) 282 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 283 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 284 gt_source="external libintl" 285 else 286 gt_source="libc" 287 fi 288 else 289 gt_source="included intl directory" 290 fi 291 AC_MSG_RESULT([$gt_source]) 292 fi 293 294 if test "$USE_NLS" = "yes"; then 295 296 if test "$gt_use_preinstalled_gnugettext" = "yes"; then 297 if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then 298 AC_MSG_CHECKING([how to link with libintl]) 299 AC_MSG_RESULT([$LIBINTL]) 300 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) 301 fi 302 303 dnl For backward compatibility. Some packages may be using this. 304 AC_DEFINE(HAVE_GETTEXT, 1, 305 [Define if the GNU gettext() function is already present or preinstalled.]) 306 AC_DEFINE(HAVE_DCGETTEXT, 1, 307 [Define if the GNU dcgettext() function is already present or preinstalled.]) 308 fi 309 310 dnl We need to process the po/ directory. 311 POSUB=po 312 fi 313 314 ifelse(gt_included_intl, yes, [ 315 dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL 316 dnl to 'yes' because some of the testsuite requires it. 317 if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then 318 BUILD_INCLUDED_LIBINTL=yes 319 fi 320 321 dnl Make all variables we use known to autoconf. 322 AC_SUBST(BUILD_INCLUDED_LIBINTL) 323 AC_SUBST(USE_INCLUDED_LIBINTL) 324 AC_SUBST(CATOBJEXT) 325 326 dnl For backward compatibility. Some configure.ins may be using this. 327 nls_cv_header_intl= 328 nls_cv_header_libgt= 329 330 dnl For backward compatibility. Some Makefiles may be using this. 331 DATADIRNAME=share 332 AC_SUBST(DATADIRNAME) 333 334 dnl For backward compatibility. Some Makefiles may be using this. 335 INSTOBJEXT=.mo 336 AC_SUBST(INSTOBJEXT) 337 338 dnl For backward compatibility. Some Makefiles may be using this. 339 GENCAT=gencat 340 AC_SUBST(GENCAT) 341 342 dnl For backward compatibility. Some Makefiles may be using this. 343 INTLOBJS= 344 if test "$USE_INCLUDED_LIBINTL" = yes; then 345 INTLOBJS="\$(GETTOBJS)" 346 fi 347 AC_SUBST(INTLOBJS) 348 349 dnl Enable libtool support if the surrounding package wishes it. 350 INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix 351 AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX) 352 ]) 353 354 dnl For backward compatibility. Some Makefiles may be using this. 355 INTLLIBS="$LIBINTL" 356 AC_SUBST(INTLLIBS) 357 358 dnl Make all documented variables known to autoconf. 359 AC_SUBST(LIBINTL) 360 AC_SUBST(LTLIBINTL) 361 AC_SUBST(POSUB) 362 ]) 363 364 365 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. 366 m4_define([gt_NEEDS_INIT], 367 [ 368 m4_divert_text([DEFAULTS], [gt_needs=]) 369 m4_define([gt_NEEDS_INIT], []) 370 ]) 371 372 373 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) 374 AC_DEFUN([AM_GNU_GETTEXT_NEED], 375 [ 376 m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) 377 ]) 378 379 380 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) 381 AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) 382
