Andrew Geissler | 4ed12e1 | 2020-06-05 18:00:41 -0500 | [diff] [blame] | 1 | # gettext.m4 serial 71 (gettext-0.20.2) |
| 2 | dnl Copyright (C) 1995-2014, 2016, 2018-2020 Free Software Foundation, Inc. |
Andrew Geissler | 82c905d | 2020-04-13 13:39:40 -0500 | [diff] [blame] | 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 |
Andrew Geissler | 4ed12e1 | 2020-06-05 18:00:41 -0500 | [diff] [blame] | 8 | dnl the GNU General Public License or the GNU Lesser General Public |
Andrew Geissler | 82c905d | 2020-04-13 13:39:40 -0500 | [diff] [blame] | 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 |
Andrew Geissler | 4ed12e1 | 2020-06-05 18:00:41 -0500 | [diff] [blame] | 12 | dnl by the GNU Lesser General Public License, and the rest of the GNU |
Andrew Geissler | 82c905d | 2020-04-13 13:39:40 -0500 | [diff] [blame] | 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 must be one of 'external', 'use-libtool'. |
| 24 | dnl INTLSYMBOL should be 'external' for packages other than GNU gettext, and |
| 25 | dnl 'use-libtool' for the packages 'gettext-runtime' and 'gettext-tools'. |
| 26 | dnl If INTLSYMBOL is 'use-libtool', then a libtool library |
| 27 | dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static, |
| 28 | dnl depending on --{enable,disable}-{shared,static} and on the presence of |
| 29 | dnl AM-DISABLE-SHARED). |
| 30 | dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext |
| 31 | dnl implementations (in libc or libintl) without the ngettext() function |
| 32 | dnl will be ignored. If NEEDSYMBOL is specified and is |
| 33 | dnl 'need-formatstring-macros', then GNU gettext implementations that don't |
| 34 | dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored. |
| 35 | dnl INTLDIR is used to find the intl libraries. If empty, |
| 36 | dnl the value '$(top_builddir)/intl/' is used. |
| 37 | dnl |
| 38 | dnl The result of the configuration is one of three cases: |
| 39 | dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled |
| 40 | dnl and used. |
| 41 | dnl Catalog format: GNU --> install in $(datadir) |
| 42 | dnl Catalog extension: .mo after installation, .gmo in source tree |
| 43 | dnl 2) GNU gettext has been found in the system's C library. |
| 44 | dnl Catalog format: GNU --> install in $(datadir) |
| 45 | dnl Catalog extension: .mo after installation, .gmo in source tree |
| 46 | dnl 3) No internationalization, always use English msgid. |
| 47 | dnl Catalog format: none |
| 48 | dnl Catalog extension: none |
| 49 | dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur. |
| 50 | dnl The use of .gmo is historical (it was needed to avoid overwriting the |
| 51 | dnl GNU format catalogs when building on a platform with an X/Open gettext), |
| 52 | dnl but we keep it in order not to force irrelevant filename changes on the |
| 53 | dnl maintainers. |
| 54 | dnl |
| 55 | AC_DEFUN([AM_GNU_GETTEXT], |
| 56 | [ |
| 57 | dnl Argument checking. |
| 58 | ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [use-libtool], , |
| 59 | [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT |
| 60 | ])])])]) |
| 61 | ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old], |
| 62 | [errprint([ERROR: Use of AM_GNU_GETTEXT without [external] argument is no longer supported. |
| 63 | ])]) |
| 64 | ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], , |
| 65 | [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT |
| 66 | ])])])]) |
| 67 | define([gt_included_intl], |
| 68 | ifelse([$1], [external], [no], [yes])) |
| 69 | gt_NEEDS_INIT |
| 70 | AM_GNU_GETTEXT_NEED([$2]) |
| 71 | |
| 72 | AC_REQUIRE([AM_PO_SUBDIRS])dnl |
| 73 | ifelse(gt_included_intl, yes, [ |
| 74 | AC_REQUIRE([AM_INTL_SUBDIR])dnl |
| 75 | ]) |
| 76 | |
| 77 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. |
| 78 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
| 79 | AC_REQUIRE([AC_LIB_RPATH]) |
| 80 | |
| 81 | dnl Sometimes libintl requires libiconv, so first search for libiconv. |
| 82 | dnl Ideally we would do this search only after the |
| 83 | dnl if test "$USE_NLS" = "yes"; then |
| 84 | dnl if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then |
| 85 | dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT |
| 86 | dnl the configure script would need to contain the same shell code |
| 87 | dnl again, outside any 'if'. There are two solutions: |
| 88 | dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'. |
| 89 | dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE. |
| 90 | dnl Since AC_PROVIDE_IFELSE is not documented, we avoid it. |
| 91 | ifelse(gt_included_intl, yes, , [ |
| 92 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) |
| 93 | ]) |
| 94 | |
| 95 | dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation. |
| 96 | gt_INTL_MACOSX |
| 97 | |
| 98 | dnl Set USE_NLS. |
| 99 | AC_REQUIRE([AM_NLS]) |
| 100 | |
| 101 | ifelse(gt_included_intl, yes, [ |
| 102 | BUILD_INCLUDED_LIBINTL=no |
| 103 | USE_INCLUDED_LIBINTL=no |
| 104 | ]) |
| 105 | LIBINTL= |
| 106 | LTLIBINTL= |
| 107 | POSUB= |
| 108 | |
| 109 | dnl Add a version number to the cache macros. |
| 110 | case " $gt_needs " in |
| 111 | *" need-formatstring-macros "*) gt_api_version=3 ;; |
| 112 | *" need-ngettext "*) gt_api_version=2 ;; |
| 113 | *) gt_api_version=1 ;; |
| 114 | esac |
| 115 | gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc" |
| 116 | gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl" |
| 117 | |
| 118 | dnl If we use NLS figure out what method |
| 119 | if test "$USE_NLS" = "yes"; then |
| 120 | gt_use_preinstalled_gnugettext=no |
| 121 | ifelse(gt_included_intl, yes, [ |
| 122 | AC_MSG_CHECKING([whether included gettext is requested]) |
| 123 | AC_ARG_WITH([included-gettext], |
| 124 | [ --with-included-gettext use the GNU gettext library included here], |
| 125 | nls_cv_force_use_gnu_gettext=$withval, |
| 126 | nls_cv_force_use_gnu_gettext=no) |
| 127 | AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext]) |
| 128 | |
| 129 | nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" |
| 130 | if test "$nls_cv_force_use_gnu_gettext" != "yes"; then |
| 131 | ]) |
| 132 | dnl User does not insist on using GNU NLS library. Figure out what |
| 133 | dnl to use. If GNU gettext is available we use this. Else we have |
| 134 | dnl to fall back to GNU NLS library. |
| 135 | |
| 136 | if test $gt_api_version -ge 3; then |
| 137 | gt_revision_test_code=' |
| 138 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION |
| 139 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) |
| 140 | #endif |
| 141 | changequote(,)dnl |
| 142 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; |
| 143 | changequote([,])dnl |
| 144 | ' |
| 145 | else |
| 146 | gt_revision_test_code= |
| 147 | fi |
| 148 | if test $gt_api_version -ge 2; then |
| 149 | gt_expression_test_code=' + * ngettext ("", "", 0)' |
| 150 | else |
| 151 | gt_expression_test_code= |
| 152 | fi |
| 153 | |
| 154 | AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc], |
| 155 | [AC_LINK_IFELSE( |
| 156 | [AC_LANG_PROGRAM( |
| 157 | [[ |
| 158 | #include <libintl.h> |
| 159 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION |
| 160 | extern int _nl_msg_cat_cntr; |
| 161 | extern int *_nl_domain_bindings; |
| 162 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings) |
| 163 | #else |
| 164 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 |
| 165 | #endif |
| 166 | $gt_revision_test_code |
| 167 | ]], |
| 168 | [[ |
| 169 | bindtextdomain ("", ""); |
| 170 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION |
| 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 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION |
| 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 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) |
| 204 | #else |
| 205 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 |
| 206 | #endif |
| 207 | $gt_revision_test_code |
| 208 | ]], |
| 209 | [[ |
| 210 | bindtextdomain ("", ""); |
| 211 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION |
| 212 | ]])], |
| 213 | [eval "$gt_func_gnugettext_libintl=yes"], |
| 214 | [eval "$gt_func_gnugettext_libintl=no"]) |
| 215 | dnl Now see whether libintl exists and depends on libiconv. |
| 216 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then |
| 217 | LIBS="$LIBS $LIBICONV" |
| 218 | AC_LINK_IFELSE( |
| 219 | [AC_LANG_PROGRAM( |
| 220 | [[ |
| 221 | #include <libintl.h> |
| 222 | #ifndef __GNU_GETTEXT_SUPPORTED_REVISION |
| 223 | extern int _nl_msg_cat_cntr; |
| 224 | extern |
| 225 | #ifdef __cplusplus |
| 226 | "C" |
| 227 | #endif |
| 228 | const char *_nl_expand_alias (const char *); |
| 229 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) |
| 230 | #else |
| 231 | #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 |
| 232 | #endif |
| 233 | $gt_revision_test_code |
| 234 | ]], |
| 235 | [[ |
| 236 | bindtextdomain ("", ""); |
| 237 | return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION |
| 238 | ]])], |
| 239 | [LIBINTL="$LIBINTL $LIBICONV" |
| 240 | LTLIBINTL="$LTLIBINTL $LTLIBICONV" |
| 241 | eval "$gt_func_gnugettext_libintl=yes" |
| 242 | ]) |
| 243 | fi |
| 244 | CPPFLAGS="$gt_save_CPPFLAGS" |
| 245 | LIBS="$gt_save_LIBS"]) |
| 246 | fi |
| 247 | |
| 248 | dnl If an already present or preinstalled GNU gettext() is found, |
| 249 | dnl use it. But if this macro is used in GNU gettext, and GNU |
| 250 | dnl gettext is already preinstalled in libintl, we update this |
| 251 | dnl libintl. (Cf. the install rule in intl/Makefile.in.) |
| 252 | if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ |
| 253 | || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ |
| 254 | && test "$PACKAGE" != gettext-runtime \ |
| 255 | && test "$PACKAGE" != gettext-tools; }; then |
| 256 | gt_use_preinstalled_gnugettext=yes |
| 257 | else |
| 258 | dnl Reset the values set by searching for libintl. |
| 259 | LIBINTL= |
| 260 | LTLIBINTL= |
| 261 | INCINTL= |
| 262 | fi |
| 263 | |
| 264 | ifelse(gt_included_intl, yes, [ |
| 265 | if test "$gt_use_preinstalled_gnugettext" != "yes"; then |
| 266 | dnl GNU gettext is not found in the C library. |
| 267 | dnl Fall back on included GNU gettext library. |
| 268 | nls_cv_use_gnu_gettext=yes |
| 269 | fi |
| 270 | fi |
| 271 | |
| 272 | if test "$nls_cv_use_gnu_gettext" = "yes"; then |
| 273 | dnl Mark actions used to generate GNU NLS library. |
| 274 | BUILD_INCLUDED_LIBINTL=yes |
| 275 | USE_INCLUDED_LIBINTL=yes |
| 276 | LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LIBICONV $LIBTHREAD" |
| 277 | LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LTLIBICONV $LTLIBTHREAD" |
| 278 | LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` |
| 279 | fi |
| 280 | |
| 281 | CATOBJEXT= |
| 282 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ |
| 283 | || test "$nls_cv_use_gnu_gettext" = "yes"; then |
| 284 | dnl Mark actions to use GNU gettext tools. |
| 285 | CATOBJEXT=.gmo |
| 286 | fi |
| 287 | ]) |
| 288 | |
| 289 | if test -n "$INTL_MACOSX_LIBS"; then |
| 290 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ |
| 291 | || test "$nls_cv_use_gnu_gettext" = "yes"; then |
| 292 | dnl Some extra flags are needed during linking. |
| 293 | LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" |
| 294 | LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" |
| 295 | fi |
| 296 | fi |
| 297 | |
| 298 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ |
| 299 | || test "$nls_cv_use_gnu_gettext" = "yes"; then |
| 300 | AC_DEFINE([ENABLE_NLS], [1], |
| 301 | [Define to 1 if translation of program messages to the user's native language |
| 302 | is requested.]) |
| 303 | else |
| 304 | USE_NLS=no |
| 305 | fi |
| 306 | fi |
| 307 | |
| 308 | AC_MSG_CHECKING([whether to use NLS]) |
| 309 | AC_MSG_RESULT([$USE_NLS]) |
| 310 | if test "$USE_NLS" = "yes"; then |
| 311 | AC_MSG_CHECKING([where the gettext function comes from]) |
| 312 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then |
| 313 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then |
| 314 | gt_source="external libintl" |
| 315 | else |
| 316 | gt_source="libc" |
| 317 | fi |
| 318 | else |
| 319 | gt_source="included intl directory" |
| 320 | fi |
| 321 | AC_MSG_RESULT([$gt_source]) |
| 322 | fi |
| 323 | |
| 324 | if test "$USE_NLS" = "yes"; then |
| 325 | |
| 326 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then |
| 327 | if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then |
| 328 | AC_MSG_CHECKING([how to link with libintl]) |
| 329 | AC_MSG_RESULT([$LIBINTL]) |
| 330 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) |
| 331 | fi |
| 332 | |
| 333 | dnl For backward compatibility. Some packages may be using this. |
| 334 | AC_DEFINE([HAVE_GETTEXT], [1], |
| 335 | [Define if the GNU gettext() function is already present or preinstalled.]) |
| 336 | AC_DEFINE([HAVE_DCGETTEXT], [1], |
| 337 | [Define if the GNU dcgettext() function is already present or preinstalled.]) |
| 338 | fi |
| 339 | |
| 340 | dnl We need to process the po/ directory. |
| 341 | POSUB=po |
| 342 | fi |
| 343 | |
| 344 | ifelse(gt_included_intl, yes, [ |
| 345 | dnl In GNU gettext we have to set BUILD_INCLUDED_LIBINTL to 'yes' |
| 346 | dnl because some of the testsuite requires it. |
| 347 | BUILD_INCLUDED_LIBINTL=yes |
| 348 | |
| 349 | dnl Make all variables we use known to autoconf. |
| 350 | AC_SUBST([BUILD_INCLUDED_LIBINTL]) |
| 351 | AC_SUBST([USE_INCLUDED_LIBINTL]) |
| 352 | AC_SUBST([CATOBJEXT]) |
| 353 | ]) |
| 354 | |
| 355 | dnl For backward compatibility. Some Makefiles may be using this. |
| 356 | INTLLIBS="$LIBINTL" |
| 357 | AC_SUBST([INTLLIBS]) |
| 358 | |
| 359 | dnl Make all documented variables known to autoconf. |
| 360 | AC_SUBST([LIBINTL]) |
| 361 | AC_SUBST([LTLIBINTL]) |
| 362 | AC_SUBST([POSUB]) |
| 363 | ]) |
| 364 | |
| 365 | |
| 366 | dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. |
| 367 | m4_define([gt_NEEDS_INIT], |
| 368 | [ |
| 369 | m4_divert_text([DEFAULTS], [gt_needs=]) |
| 370 | m4_define([gt_NEEDS_INIT], []) |
| 371 | ]) |
| 372 | |
| 373 | |
| 374 | dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) |
| 375 | AC_DEFUN([AM_GNU_GETTEXT_NEED], |
| 376 | [ |
| 377 | m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) |
| 378 | ]) |
| 379 | |
| 380 | |
| 381 | dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) |
| 382 | AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) |
| 383 | |
| 384 | |
| 385 | dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version]) |
| 386 | AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], []) |