text: # wchar_t.m4 serial 4 (gettext-0.18.2)
  dnl Copyright (C) 2002-2003, 2008-2011 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 From Bruno Haible.
  dnl Test whether <stddef.h> has the 'wchar_t' type.
  dnl Prerequisite: AC_PROG_CC
  
  AC_DEFUN([gt_TYPE_WCHAR_T],
  [
    AC_CACHE_CHECK([for wchar_t], [gt_cv_c_wchar_t],
      [AC_COMPILE_IFELSE(
         [AC_LANG_PROGRAM(
            [[#include <stddef.h>
              wchar_t foo = (wchar_t)'\0';]],
            [[]])],
         [gt_cv_c_wchar_t=yes],
         [gt_cv_c_wchar_t=no])])
    if test $gt_cv_c_wchar_t = yes; then
      AC_DEFINE([HAVE_WCHAR_T], [1], [Define if you have the 'wchar_t' type.])
    fi
  ])
  