m4/wint_t.m4

   1 # wint_t.m4 serial 5 (gettext-0.18.2)
   2 dnl Copyright (C) 2003, 2007-2014 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
   7 dnl From Bruno Haible.
   8 dnl Test whether <wchar.h> has the 'wint_t' type.
   9 dnl Prerequisite: AC_PROG_CC
  10
  11 AC_DEFUN([gt_TYPE_WINT_T],
  12 [
  13   AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t],
  14     [AC_COMPILE_IFELSE(
  15        [AC_LANG_PROGRAM(
  16           [[
  17 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
  18    <wchar.h>.
  19    BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
  20    before <wchar.h>.  */
  21 #include <stddef.h>
  22 #include <stdio.h>
  23 #include <time.h>
  24 #include <wchar.h>
  25             wint_t foo = (wchar_t)'\0';]],
  26           [[]])],
  27        [gt_cv_c_wint_t=yes],
  28        [gt_cv_c_wint_t=no])])
  29   if test $gt_cv_c_wint_t = yes; then
  30     AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.])
  31   fi
  32 ])