1 # mbstate_t.m4 serial 14
2 dnl Copyright (C) 2000-2002, 2008-2022 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.
9 # BeOS 5 has <wchar.h> but does not define mbstate_t,
10 # so you can't declare an object of that type.
11 # Check for this incompatibility with Standard C.
15 AC_DEFUN([AC_TYPE_MBSTATE_T],
17 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11
19 AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t],
24 [[mbstate_t x; return sizeof x;]])],
25 [ac_cv_type_mbstate_t=yes],
26 [ac_cv_type_mbstate_t=no])])
27 if test $ac_cv_type_mbstate_t = yes; then
28 AC_DEFINE([HAVE_MBSTATE_T], [1],
29 [Define to 1 if <wchar.h> declares mbstate_t.])
31 AC_DEFINE([mbstate_t], [int],
32 [Define to a type if <wchar.h> does not define.])