guile/m4/wint_t.m4
Ludovic Courtès f240aacb41 Add Gnulib portability modules; update Gnulib files.
* m4/gnulib-cache.m4 (gl_MODULES): Add `flock' (provides flock(2)
  declaration and implementation), `fpieee' (fixes floating point
  behavior on Alpha and SH), `stdlib' (provides an unsetenv(3)
  declaration, among others), `putenv' (provides a putenv(3) declaration
  and implementation with the semantics we need).
2009-05-21 01:00:41 +02:00

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# wint_t.m4 serial 4 (gettext-0.18)
dnl Copyright (C) 2003, 2007-2009 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 <wchar.h> has the 'wint_t' type.
dnl Prerequisite: AC_PROG_CC
AC_DEFUN([gt_TYPE_WINT_T],
[
AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t],
[AC_TRY_COMPILE([
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
<wchar.h>.
BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
before <wchar.h>. */
#include <stddef.h>
#include <stdio.h>
#include <time.h>
#include <wchar.h>
wint_t foo = (wchar_t)'\0';], ,
[gt_cv_c_wint_t=yes], [gt_cv_c_wint_t=no])])
if test $gt_cv_c_wint_t = yes; then
AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.])
fi
])