Edit File: wchar_t.m4
# wchar_t.m4 serial 4 (gettext-0.18.2) dnl Copyright (C) 2002-2003, 2008-2016 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 ])