# intl.m4 serial 8 (gettext-0.17)

dnl Copyright (C) 1995-2007 Free Software Foundation, Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

dnl

dnl This file can can be used in projects which are not available under

dnl the GNU General Public License or the GNU Library General Public

dnl License but which still want to provide support for the GNU gettext

dnl functionality.

dnl Please note that the actual code of the GNU gettext library is covered

dnl by the GNU Library General Public License, and the rest of the GNU

dnl gettext package package is covered by the GNU General Public License.

dnl They are *not* in the public domain.

dnl Authors:

dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.

dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2006.

AC_PREREQ(2.52)

dnl Checks for all prerequisites of the intl subdirectory,

dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,

dnl            USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.

AC_DEFUN([AM_INTL_SUBDIR],

[

  AC_REQUIRE([AC_PROG_INSTALL])dnl

  AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake

  AC_REQUIRE([AC_PROG_CC])dnl

  AC_REQUIRE([AC_CANONICAL_HOST])dnl

  AC_REQUIRE([gt_GLIBC2])dnl

  AC_REQUIRE([AC_PROG_RANLIB])dnl

  AC_REQUIRE([gl_VISIBILITY])dnl

  AC_REQUIRE([gt_INTL_SUBDIR_CORE])dnl

  AC_REQUIRE([AC_TYPE_LONG_LONG_INT])dnl

  AC_REQUIRE([gt_TYPE_WCHAR_T])dnl

  AC_REQUIRE([gt_TYPE_WINT_T])dnl

  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])

  AC_REQUIRE([gt_TYPE_INTMAX_T])

  AC_REQUIRE([gt_PRINTF_POSIX])

  AC_REQUIRE([gl_GLIBC21])dnl

  AC_REQUIRE([gl_XSIZE])dnl

  AC_REQUIRE([gt_INTL_MACOSX])dnl

  AC_CHECK_TYPE([ptrdiff_t], ,

    [AC_DEFINE([ptrdiff_t], [long],

       [Define as the type of the result of subtracting two pointers, if the system doesn't define it.])

    ])

  AC_CHECK_HEADERS([stddef.h stdlib.h string.h])

  AC_CHECK_FUNCS([asprintf fwprintf putenv setenv setlocale snprintf wcslen])

  dnl Use the _snprintf function only if it is declared (because on NetBSD it

  dnl is defined as a weak alias of snprintf; we prefer to use the latter).

  gt_CHECK_DECL(_snprintf, [#include <stdio.h>])

  gt_CHECK_DECL(_snwprintf, [#include <stdio.h>])

  dnl Use the *_unlocked functions only if they are declared.

  dnl (because some of them were defined without being declared in Solaris

  dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built

  dnl on Solaris 2.5.1 to run on Solaris 2.6).

  dnl Don't use AC_CHECK_DECLS because it isn't supported in autoconf-2.13.

  gt_CHECK_DECL(getc_unlocked, [#include <stdio.h>])

  case $gt_cv_func_printf_posix in

    *yes) HAVE_POSIX_PRINTF=1 ;;

    *) HAVE_POSIX_PRINTF=0 ;;

  esac

  AC_SUBST([HAVE_POSIX_PRINTF])

  if test "$ac_cv_func_asprintf" = yes; then

    HAVE_ASPRINTF=1

  else

    HAVE_ASPRINTF=0

  fi

  AC_SUBST([HAVE_ASPRINTF])

  if test "$ac_cv_func_snprintf" = yes; then

    HAVE_SNPRINTF=1

  else

    HAVE_SNPRINTF=0

  fi

  AC_SUBST([HAVE_SNPRINTF])

  if test "$ac_cv_func_wprintf" = yes; then

    HAVE_WPRINTF=1

  else

    HAVE_WPRINTF=0

  fi

  AC_SUBST([HAVE_WPRINTF])

  AM_LANGINFO_CODESET

  gt_LC_MESSAGES

  dnl Compilation on mingw and Cygwin needs special Makefile rules, because

  dnl 1. when we install a shared library, we must arrange to export

  dnl    auxiliary pointer variables for every exported variable,

  dnl 2. when we install a shared library and a static library simultaneously,

  dnl    the include file specifies __declspec(dllimport) and therefore we

  dnl    must arrange to define the auxiliary pointer variables for the

  dnl    exported variables _also_ in the static library.

  if test "$enable_shared" = yes; then

    case "$host_os" in

      mingw* | cygwin*) is_woe32dll=yes ;;

      *) is_woe32dll=no ;;

    esac

  else

    is_woe32dll=no

  fi

  WOE32DLL=$is_woe32dll

  AC_SUBST([WOE32DLL])

  dnl On mingw and Cygwin, we can activate special Makefile rules which add

  dnl version information to the shared libraries and executables.

  case "$host_os" in

    mingw* | cygwin*) is_woe32=yes ;;

    *) is_woe32=no ;;

  esac

  WOE32=$is_woe32

  AC_SUBST([WOE32])

  if test $WOE32 = yes; then

    dnl Check for a program that compiles Windows resource files.

    AC_CHECK_TOOL([WINDRES], [windres])

  fi

  dnl Determine whether when creating a library, "-lc" should be passed to

  dnl libtool or not. On many platforms, it is required for the libtool option

  dnl -no-undefined to work. On HP-UX, however, the -lc - stored by libtool

  dnl in the *.la files - makes it impossible to create multithreaded programs,

  dnl because libtool also reorders the -lc to come before the -pthread, and

  dnl this disables pthread_create() <http://docs.hp.com/en/1896/pthreads.html>.

  case "$host_os" in

    hpux*) LTLIBC="" ;;

    *)     LTLIBC="-lc" ;;

  esac

  AC_SUBST([LTLIBC])

  dnl Rename some macros and functions used for locking.

  AH_BOTTOM([

#define __libc_lock_t                   gl_lock_t

#define __libc_lock_define              gl_lock_define

#define __libc_lock_define_initialized  gl_lock_define_initialized

#define __libc_lock_init                gl_lock_init

#define __libc_lock_lock                gl_lock_lock

#define __libc_lock_unlock              gl_lock_unlock

#define __libc_lock_recursive_t                   gl_recursive_lock_t

#define __libc_lock_define_recursive              gl_recursive_lock_define

#define __libc_lock_define_initialized_recursive  gl_recursive_lock_define_initialized

#define __libc_lock_init_recursive                gl_recursive_lock_init

#define __libc_lock_lock_recursive                gl_recursive_lock_lock

#define __libc_lock_unlock_recursive              gl_recursive_lock_unlock

#define glthread_in_use  libintl_thread_in_use

#define glthread_lock_init     libintl_lock_init

#define glthread_lock_lock     libintl_lock_lock

#define glthread_lock_unlock   libintl_lock_unlock

#define glthread_lock_destroy  libintl_lock_destroy

#define glthread_rwlock_init     libintl_rwlock_init

#define glthread_rwlock_rdlock   libintl_rwlock_rdlock

#define glthread_rwlock_wrlock   libintl_rwlock_wrlock

#define glthread_rwlock_unlock   libintl_rwlock_unlock

#define glthread_rwlock_destroy  libintl_rwlock_destroy

#define glthread_recursive_lock_init     libintl_recursive_lock_init

#define glthread_recursive_lock_lock     libintl_recursive_lock_lock

#define glthread_recursive_lock_unlock   libintl_recursive_lock_unlock

#define glthread_recursive_lock_destroy  libintl_recursive_lock_destroy

#define glthread_once                 libintl_once

#define glthread_once_call            libintl_once_call

#define glthread_once_singlethreaded  libintl_once_singlethreaded

])

])

dnl Checks for the core files of the intl subdirectory:

dnl   dcigettext.c

dnl   eval-plural.h

dnl   explodename.c

dnl   finddomain.c

dnl   gettextP.h

dnl   gmo.h

dnl   hash-string.h hash-string.c

dnl   l10nflist.c

dnl   libgnuintl.h.in (except the *printf stuff)

dnl   loadinfo.h

dnl   loadmsgcat.c

dnl   localealias.c

dnl   log.c

dnl   plural-exp.h plural-exp.c

dnl   plural.y

dnl Used by libglocale.

AC_DEFUN([gt_INTL_SUBDIR_CORE],

[

  AC_REQUIRE([AC_C_INLINE])dnl

  AC_REQUIRE([AC_TYPE_SIZE_T])dnl

  AC_REQUIRE([gl_AC_HEADER_STDINT_H])

  AC_REQUIRE([AC_FUNC_ALLOCA])dnl

  AC_REQUIRE([AC_FUNC_MMAP])dnl

  AC_REQUIRE([gt_INTDIV0])dnl

  AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])dnl

  AC_REQUIRE([gt_INTTYPES_PRI])dnl

  AC_REQUIRE([gl_LOCK])dnl

  AC_TRY_LINK(

    [int foo (int a) { a = __builtin_expect (a, 10); return a == 10 ? 0 : 1; }],

    [],

    [AC_DEFINE([HAVE_BUILTIN_EXPECT], 1,

       [Define to 1 if the compiler understands __builtin_expect.])])

  AC_CHECK_HEADERS([argz.h inttypes.h limits.h unistd.h sys/param.h])

  AC_CHECK_FUNCS([getcwd getegid geteuid getgid getuid mempcpy munmap \

    stpcpy strcasecmp strdup strtoul tsearch argz_count argz_stringify \

    argz_next __fsetlocking])

  dnl Use the *_unlocked functions only if they are declared.

  dnl (because some of them were defined without being declared in Solaris

  dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built

  dnl on Solaris 2.5.1 to run on Solaris 2.6).

  dnl Don't use AC_CHECK_DECLS because it isn't supported in autoconf-2.13.

  gt_CHECK_DECL(feof_unlocked, [#include <stdio.h>])

  gt_CHECK_DECL(fgets_unlocked, [#include <stdio.h>])

  AM_ICONV

  dnl glibc >= 2.4 has a NL_LOCALE_NAME macro when _GNU_SOURCE is defined,

  dnl and a _NL_LOCALE_NAME macro always.

  AC_CACHE_CHECK([for NL_LOCALE_NAME macro], gt_cv_nl_locale_name,

    [AC_TRY_LINK([#include <langinfo.h>

#include <locale.h>],

      [char* cs = nl_langinfo(_NL_LOCALE_NAME(LC_MESSAGES));

       return !cs;

      ],

      gt_cv_nl_locale_name=yes,

      gt_cv_nl_locale_name=no)

    ])

  if test $gt_cv_nl_locale_name = yes; then

    AC_DEFINE(HAVE_NL_LOCALE_NAME, 1,

      [Define if you have <langinfo.h> and it defines the NL_LOCALE_NAME macro if _GNU_SOURCE is defined.])

  fi

  dnl intl/plural.c is generated from intl/plural.y. It requires bison,

  dnl because plural.y uses bison specific features. It requires at least

  dnl bison-1.26 because earlier versions generate a plural.c that doesn't

  dnl compile.

  dnl bison is only needed for the maintainer (who touches plural.y). But in

  dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put

  dnl the rule in general Makefile. Now, some people carelessly touch the

  dnl files or have a broken "make" program, hence the plural.c rule will

  dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not

  dnl present or too old.

  AC_CHECK_PROGS([INTLBISON], [bison])

  if test -z "$INTLBISON"; then

    ac_verc_fail=yes

  else

    dnl Found it, now check the version.

    AC_MSG_CHECKING([version of bison])

changequote(<<,>>)dnl

    ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`

    case $ac_prog_version in

      '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;

      1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)

changequote([,])dnl

         ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;

      *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;

    esac

    AC_MSG_RESULT([$ac_prog_version])

  fi

  if test $ac_verc_fail = yes; then

    INTLBISON=:

  fi

])

dnl gt_CHECK_DECL(FUNC, INCLUDES)

dnl Check whether a function is declared.

AC_DEFUN([gt_CHECK_DECL],

[

  AC_CACHE_CHECK([whether $1 is declared], ac_cv_have_decl_$1,

    [AC_TRY_COMPILE([$2], [

#ifndef $1

  char *p = (char *) $1;

#endif

], ac_cv_have_decl_$1=yes, ac_cv_have_decl_$1=no)])

  if test $ac_cv_have_decl_$1 = yes; then

    gt_value=1

  else

    gt_value=0

  fi

  AC_DEFINE_UNQUOTED([HAVE_DECL_]translit($1, [a-z], [A-Z]), [$gt_value],

    [Define to 1 if you have the declaration of `$1', and to 0 if you don't.])

])