git.m6w6.name Git - m6w6/libmemcached/blob - m4/gettext.m4

   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@cygnus.com>, 1995-2000.
  18 dnl   Bruno Haible <haible@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   dnl Hardcode this, because the previous ifdef just wasn't working
  67   define([gt_included_intl],[no])
  68   define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
  69   gt_NEEDS_INIT
  70   AM_GNU_GETTEXT_NEED([$2])
  71
  72   AC_REQUIRE([AM_PO_SUBDIRS])dnl
  73   dnl ifelse(gt_included_intl, yes, [
  74   dnl   AC_REQUIRE([AM_INTL_SUBDIR])dnl
  75   dnl ])
  76
  77   dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
  78   AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
  79   AC_REQUIRE([AC_LIB_RPATH])
  80
  81   dnl Sometimes libintl requires libiconv, so first search for libiconv.
  82   dnl Ideally we would do this search only after the
  83   dnl      if test "$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 only in autoconf >= 2.52 and not
  91   dnl documented, we avoid it.
  92   ifelse(gt_included_intl, yes, , [
  93     AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
  94   ])
  95
  96   dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
  97   gt_INTL_MACOSX
  98
  99   dnl Set USE_NLS.
 100   AC_REQUIRE([AM_NLS])
 101
 102   ifelse(gt_included_intl, yes, [
 103     BUILD_INCLUDED_LIBINTL=no
 104     USE_INCLUDED_LIBINTL=no
 105   ])
 106   LIBINTL=
 107   LTLIBINTL=
 108   POSUB=
 109
 110   dnl Add a version number to the cache macros.
 111   case " $gt_needs " in
 112     *" need-formatstring-macros "*) gt_api_version=3 ;;
 113     *" need-ngettext "*) gt_api_version=2 ;;
 114     *) gt_api_version=1 ;;
 115   esac
 116   gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
 117   gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
 118
 119   dnl If we use NLS figure out what method
 120   if test "$USE_NLS" = "yes"; then
 121     gt_use_preinstalled_gnugettext=no
 122     ifelse(gt_included_intl, yes, [
 123       AC_MSG_CHECKING([whether included gettext is requested])
 124       AC_ARG_WITH(included-gettext,
 125         [  --with-included-gettext use the GNU gettext library included here],
 126         nls_cv_force_use_gnu_gettext=$withval,
 127         nls_cv_force_use_gnu_gettext=no)
 128       AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
 129
 130       nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
 131       if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
 132     ])
 133         dnl User does not insist on using GNU NLS library.  Figure out what
 134         dnl to use.  If GNU gettext is available we use this.  Else we have
 135         dnl to fall back to GNU NLS library.
 136
 137         if test $gt_api_version -ge 3; then
 138           gt_revision_test_code='
 139 #ifndef __GNU_GETTEXT_SUPPORTED_REVISION
 140 #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
 141 #endif
 142 changequote(,)dnl
 143 typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
 144 changequote([,])dnl
 145 '
 146         else
 147           gt_revision_test_code=
 148         fi
 149         if test $gt_api_version -ge 2; then
 150           gt_expression_test_code=' + * ngettext ("", "", 0)'
 151         else
 152           gt_expression_test_code=
 153         fi
 154
 155         AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
 156          [AC_TRY_LINK([#include <libintl.h>
 157 $gt_revision_test_code
 158 extern int _nl_msg_cat_cntr;
 159 extern int *_nl_domain_bindings;],
 160             [bindtextdomain ("", "");
 161 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_domain_bindings],
 162             [eval "$gt_func_gnugettext_libc=yes"],
 163             [eval "$gt_func_gnugettext_libc=no"])])
 164
 165         if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
 166           dnl Sometimes libintl requires libiconv, so first search for libiconv.
 167           ifelse(gt_included_intl, yes, , [
 168             AM_ICONV_LINK
 169           ])
 170           dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
 171           dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
 172           dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
 173           dnl even if libiconv doesn't exist.
 174           AC_LIB_LINKFLAGS_BODY([intl])
 175           AC_CACHE_CHECK([for GNU gettext in libintl],
 176             [$gt_func_gnugettext_libintl],
 177            [gt_save_CPPFLAGS="$CPPFLAGS"
 178             CPPFLAGS="$CPPFLAGS $INCINTL"
 179             gt_save_LIBS="$LIBS"
 180             LIBS="$LIBS $LIBINTL"
 181             dnl Now see whether libintl exists and does not depend on libiconv.
 182             AC_TRY_LINK([#include <libintl.h>
 183 $gt_revision_test_code
 184 extern int _nl_msg_cat_cntr;
 185 extern
 186 #ifdef __cplusplus
 187 "C"
 188 #endif
 189 const char *_nl_expand_alias (const char *);],
 190               [bindtextdomain ("", "");
 191 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
 192               [eval "$gt_func_gnugettext_libintl=yes"],
 193               [eval "$gt_func_gnugettext_libintl=no"])
 194             dnl Now see whether libintl exists and depends on libiconv.
 195             if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
 196               LIBS="$LIBS $LIBICONV"
 197               AC_TRY_LINK([#include <libintl.h>
 198 $gt_revision_test_code
 199 extern int _nl_msg_cat_cntr;
 200 extern
 201 #ifdef __cplusplus
 202 "C"
 203 #endif
 204 const char *_nl_expand_alias (const char *);],
 205                 [bindtextdomain ("", "");
 206 return * gettext ("")$gt_expression_test_code + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
 207                [LIBINTL="$LIBINTL $LIBICONV"
 208                 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
 209                 eval "$gt_func_gnugettext_libintl=yes"
 210                ])
 211             fi
 212             CPPFLAGS="$gt_save_CPPFLAGS"
 213             LIBS="$gt_save_LIBS"])
 214         fi
 215
 216         dnl If an already present or preinstalled GNU gettext() is found,
 217         dnl use it.  But if this macro is used in GNU gettext, and GNU
 218         dnl gettext is already preinstalled in libintl, we update this
 219         dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
 220         if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
 221            || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
 222                 && test "$PACKAGE" != gettext-runtime \
 223                 && test "$PACKAGE" != gettext-tools; }; then
 224           gt_use_preinstalled_gnugettext=yes
 225         else
 226           dnl Reset the values set by searching for libintl.
 227           LIBINTL=
 228           LTLIBINTL=
 229           INCINTL=
 230         fi
 231
 232     ifelse(gt_included_intl, yes, [
 233         if test "$gt_use_preinstalled_gnugettext" != "yes"; then
 234           dnl GNU gettext is not found in the C library.
 235           dnl Fall back on included GNU gettext library.
 236           nls_cv_use_gnu_gettext=yes
 237         fi
 238       fi
 239
 240       if test "$nls_cv_use_gnu_gettext" = "yes"; then
 241         dnl Mark actions used to generate GNU NLS library.
 242         BUILD_INCLUDED_LIBINTL=yes
 243         USE_INCLUDED_LIBINTL=yes
 244         LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
 245         LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
 246         LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
 247       fi
 248
 249       CATOBJEXT=
 250       if test "$gt_use_preinstalled_gnugettext" = "yes" \
 251          || test "$nls_cv_use_gnu_gettext" = "yes"; then
 252         dnl Mark actions to use GNU gettext tools.
 253         CATOBJEXT=.gmo
 254       fi
 255     ])
 256
 257     if test -n "$INTL_MACOSX_LIBS"; then
 258       if test "$gt_use_preinstalled_gnugettext" = "yes" \
 259          || test "$nls_cv_use_gnu_gettext" = "yes"; then
 260         dnl Some extra flags are needed during linking.
 261         LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
 262         LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
 263       fi
 264     fi
 265
 266     if test "$gt_use_preinstalled_gnugettext" = "yes" \
 267        || test "$nls_cv_use_gnu_gettext" = "yes"; then
 268       AC_DEFINE(ENABLE_NLS, 1,
 269         [Define to 1 if translation of program messages to the user's native language
 270    is requested.])
 271     else
 272       USE_NLS=no
 273     fi
 274   fi
 275
 276   AC_MSG_CHECKING([whether to use NLS])
 277   AC_MSG_RESULT([$USE_NLS])
 278   if test "$USE_NLS" = "yes"; then
 279     AC_MSG_CHECKING([where the gettext function comes from])
 280     if test "$gt_use_preinstalled_gnugettext" = "yes"; then
 281       if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
 282         gt_source="external libintl"
 283       else
 284         gt_source="libc"
 285       fi
 286     else
 287       gt_source="included intl directory"
 288     fi
 289     AC_MSG_RESULT([$gt_source])
 290   fi
 291
 292   if test "$USE_NLS" = "yes"; then
 293
 294     if test "$gt_use_preinstalled_gnugettext" = "yes"; then
 295       if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
 296         AC_MSG_CHECKING([how to link with libintl])
 297         AC_MSG_RESULT([$LIBINTL])
 298         AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
 299       fi
 300
 301       dnl For backward compatibility. Some packages may be using this.
 302       AC_DEFINE(HAVE_GETTEXT, 1,
 303        [Define if the GNU gettext() function is already present or preinstalled.])
 304       AC_DEFINE(HAVE_DCGETTEXT, 1,
 305        [Define if the GNU dcgettext() function is already present or preinstalled.])
 306     fi
 307
 308     dnl We need to process the po/ directory.
 309     POSUB=po
 310   fi
 311
 312   ifelse(gt_included_intl, yes, [
 313     dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
 314     dnl to 'yes' because some of the testsuite requires it.
 315     if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
 316       BUILD_INCLUDED_LIBINTL=yes
 317     fi
 318
 319     dnl Make all variables we use known to autoconf.
 320     AC_SUBST(BUILD_INCLUDED_LIBINTL)
 321     AC_SUBST(USE_INCLUDED_LIBINTL)
 322     AC_SUBST(CATOBJEXT)
 323
 324     dnl For backward compatibility. Some configure.ins may be using this.
 325     nls_cv_header_intl=
 326     nls_cv_header_libgt=
 327
 328     dnl For backward compatibility. Some Makefiles may be using this.
 329     DATADIRNAME=share
 330     AC_SUBST(DATADIRNAME)
 331
 332     dnl For backward compatibility. Some Makefiles may be using this.
 333     INSTOBJEXT=.mo
 334     AC_SUBST(INSTOBJEXT)
 335
 336     dnl For backward compatibility. Some Makefiles may be using this.
 337     GENCAT=gencat
 338     AC_SUBST(GENCAT)
 339
 340     dnl For backward compatibility. Some Makefiles may be using this.
 341     INTLOBJS=
 342     if test "$USE_INCLUDED_LIBINTL" = yes; then
 343       INTLOBJS="\$(GETTOBJS)"
 344     fi
 345     AC_SUBST(INTLOBJS)
 346
 347     dnl Enable libtool support if the surrounding package wishes it.
 348     INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
 349     AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
 350   ])
 351
 352   dnl For backward compatibility. Some Makefiles may be using this.
 353   INTLLIBS="$LIBINTL"
 354   AC_SUBST(INTLLIBS)
 355
 356   dnl Make all documented variables known to autoconf.
 357   AC_SUBST(LIBINTL)
 358   AC_SUBST(LTLIBINTL)
 359   AC_SUBST(POSUB)
 360 ])
 361
 362
 363 dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
 364 m4_define([gt_NEEDS_INIT],
 365 [
 366   m4_divert_text([DEFAULTS], [gt_needs=])
 367   m4_define([gt_NEEDS_INIT], [])
 368 ])
 369
 370
 371 dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
 372 AC_DEFUN([AM_GNU_GETTEXT_NEED],
 373 [
 374   m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
 375 ])
 376
 377
 378 dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
 379 AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])