Commit | Line | Data |
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8690e634 | 1 | # mbstate_t.m4 serial 13 |
7a6dbc2f | 2 | dnl Copyright (C) 2000-2002, 2008-2018 Free Software Foundation, Inc. |
8690e634 JK |
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 | ]) |