# mbstate_t.m4 serial 9 dnl Copyright (C) 2000, 2001, 2002 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. # From Paul Eggert. # BeOS 5 has <wchar.h> but does not define mbstate_t, # so you can't declare an object of that type. # Check for this incompatibility with Standard C. # AC_TYPE_MBSTATE_T # ----------------- AC_DEFUN([AC_TYPE_MBSTATE_T], [AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t, [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [AC_INCLUDES_DEFAULT # include <wchar.h>], [mbstate_t x; return sizeof x;])], [ac_cv_type_mbstate_t=yes], [ac_cv_type_mbstate_t=no])]) if test $ac_cv_type_mbstate_t = yes; then AC_DEFINE([HAVE_MBSTATE_T], 1, [Define to 1 if <wchar.h> declares mbstate_t.]) else AC_DEFINE([mbstate_t], int, [Define to a type if <wchar.h> does not define.]) fi])