xref: /openbsd-src/gnu/usr.bin/texinfo/m4/wchar_t.m4 (revision a1acfa9b69ad64eb720639240c8438f11107dc85)
1*a1acfa9bSespie# wchar_t.m4 serial 1 (gettext-0.12)
2*a1acfa9bSespiednl Copyright (C) 2002-2003 Free Software Foundation, Inc.
3*a1acfa9bSespiednl This file is free software, distributed under the terms of the GNU
4*a1acfa9bSespiednl General Public License.  As a special exception to the GNU General
5*a1acfa9bSespiednl Public License, this file may be distributed as part of a program
6*a1acfa9bSespiednl that contains a configuration script generated by Autoconf, under
7*a1acfa9bSespiednl the same distribution terms as the rest of that program.
8*a1acfa9bSespie
9*a1acfa9bSespiednl From Bruno Haible.
10*a1acfa9bSespiednl Test whether <stddef.h> has the 'wchar_t' type.
11*a1acfa9bSespiednl Prerequisite: AC_PROG_CC
12*a1acfa9bSespie
13*a1acfa9bSespieAC_DEFUN([gt_TYPE_WCHAR_T],
14*a1acfa9bSespie[
15*a1acfa9bSespie  AC_CACHE_CHECK([for wchar_t], gt_cv_c_wchar_t,
16*a1acfa9bSespie    [AC_TRY_COMPILE([#include <stddef.h>
17*a1acfa9bSespie       wchar_t foo = (wchar_t)'\0';], ,
18*a1acfa9bSespie       gt_cv_c_wchar_t=yes, gt_cv_c_wchar_t=no)])
19*a1acfa9bSespie  if test $gt_cv_c_wchar_t = yes; then
20*a1acfa9bSespie    AC_DEFINE(HAVE_WCHAR_T, 1, [Define if you have the 'wchar_t' type.])
21*a1acfa9bSespie  fi
22*a1acfa9bSespie])
23