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thodg/libiconv/m4/mbstate_t.m4

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  • Author : Bruno Haible
    Date : 2002-04-29 13:10:06
    Hash : 70b9eb6d
    Message : Make autoconfiguration independent of clisp.

  • m4/mbstate_t.m4
  • # mbstate_t.m4 serial 9 (fileutils-4.1.3)
    dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
    dnl This file is free software, distributed under the terms of the GNU
    dnl General Public License.  As a special exception to the GNU General
    dnl Public License, this file may be distributed as part of a program
    dnl that contains a configuration script generated by Autoconf, under
    dnl the same distribution terms as the rest of that program.
    
    # From Paul Eggert.
    
    # BeOS 5 has <wchar.h> but does not define mbstate_t,
    # so you can't declare an object of that type.
    # Check for this incompatibility with Standard C.
    
    # Include stdlib.h first, because otherwise this test would fail on Linux
    # (at least glibc-2.1.3) because the "_XOPEN_SOURCE 500" definition elicits
    # a syntax error in wchar.h due to the use of undefined __int32_t.
    
    AC_DEFUN([AC_MBSTATE_T],
      [
       AC_CHECK_HEADERS(stdlib.h)
    
       AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t,
        [AC_TRY_COMPILE([
    #if HAVE_STDLIB_H
    # include <stdlib.h>
    #endif
    #include <wchar.h>],
          [mbstate_t x; return sizeof x;],
          ac_cv_type_mbstate_t=yes,
          ac_cv_type_mbstate_t=no)])
       if test $ac_cv_type_mbstate_t = no; then
         AC_DEFINE(mbstate_t, int,
    	       [Define to a type if <wchar.h> does not define.])
       fi])