| # mbstate_t.m4 serial 13 |
| dnl Copyright (C) 2000-2002, 2008-2013 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[ |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #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 |
| ]) |
