m4/mbrtowc.m4

   1 # mbrtowc.m4 serial 5
   2 dnl Copyright (C) 2001-2002 Free Software Foundation, Inc.
   3 dnl This file is free software, distributed under the terms of the GNU
   4 dnl General Public License.  As a special exception to the GNU General
   5 dnl Public License, this file may be distributed as part of a program
   6 dnl that contains a configuration script generated by Autoconf, under
   7 dnl the same distribution terms as the rest of that program.
   8
   9 dnl From Paul Eggert
  10
  11 dnl This file can be removed, and jm_FUNC_MBRTOWC replaced with
  12 dnl AC_FUNC_MBRTOWC, when autoconf 2.57 can be assumed everywhere.
  13
  14 AC_DEFUN([jm_FUNC_MBRTOWC],
  15 [
  16   AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],
  17     jm_cv_func_mbrtowc,
  18     [AC_TRY_LINK(
  19        [#include <wchar.h>],
  20        [mbstate_t state; return ! (sizeof state && mbrtowc);],
  21        jm_cv_func_mbrtowc=yes,
  22        jm_cv_func_mbrtowc=no)])
  23   if test $jm_cv_func_mbrtowc = yes; then
  24     AC_DEFINE(HAVE_MBRTOWC, 1,
  25       [Define to 1 if mbrtowc and mbstate_t are properly declared.])
  26   fi
  27 ])