| 1 | # mbstate_t.m4 serial 13 |
| 2 | dnl Copyright (C) 2000-2002, 2008-2013 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. |
| 6 | |
| 7 | # From Paul Eggert. |
| 8 | |
| 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. |
| 12 | |
| 13 | # AC_TYPE_MBSTATE_T |
| 14 | # ----------------- |
| 15 | AC_DEFUN([AC_TYPE_MBSTATE_T], |
| 16 | [ |
| 17 | AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11 |
| 18 | |
| 19 | AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t], |
| 20 | [AC_COMPILE_IFELSE( |
| 21 | [AC_LANG_PROGRAM( |
| 22 | [AC_INCLUDES_DEFAULT[ |
| 23 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| 24 | <wchar.h>. |
| 25 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| 26 | included before <wchar.h>. */ |
| 27 | #include <stddef.h> |
| 28 | #include <stdio.h> |
| 29 | #include <time.h> |
| 30 | #include <wchar.h>]], |
| 31 | [[mbstate_t x; return sizeof x;]])], |
| 32 | [ac_cv_type_mbstate_t=yes], |
| 33 | [ac_cv_type_mbstate_t=no])]) |
| 34 | if test $ac_cv_type_mbstate_t = yes; then |
| 35 | AC_DEFINE([HAVE_MBSTATE_T], [1], |
| 36 | [Define to 1 if <wchar.h> declares mbstate_t.]) |
| 37 | else |
| 38 | AC_DEFINE([mbstate_t], [int], |
| 39 | [Define to a type if <wchar.h> does not define.]) |
| 40 | fi |
| 41 | ]) |