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- # mbstate_t.m4 serial 12
- dnl Copyright (C) 2000-2002, 2008, 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.
- # 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_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11
- 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
- ])
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