| # mbstate_t.m4 serial 9 (fileutils-4.1.3) |
| dnl Copyright (C) 2000-2002 Free Software Foundation, Inc. |
| dnl This file is free software, distributed under the terms of the GNU |
| dnl General Public License. As a special exception to the GNU General |
| dnl Public License, this file may be distributed as part of a program |
| dnl that contains a configuration script generated by Autoconf, under |
| dnl the same distribution terms as the rest of that program. |
| |
| # 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. |
| |
| # Include stdlib.h first, because otherwise this test would fail on Linux |
| # (at least glibc-2.1.3) because the "_XOPEN_SOURCE 500" definition elicits |
| # a syntax error in wchar.h due to the use of undefined __int32_t. |
| |
| AC_DEFUN([AC_MBSTATE_T], |
| [ |
| AC_CHECK_HEADERS(stdlib.h) |
| |
| AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t, |
| [AC_TRY_COMPILE([ |
| #if HAVE_STDLIB_H |
| # include <stdlib.h> |
| #endif |
| #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 = no; then |
| AC_DEFINE(mbstate_t, int, |
| [Define to a type if <wchar.h> does not define.]) |
| fi]) |
