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| 1 # mbstate_t.m4 serial 10 |
| 2 dnl Copyright (C) 2000-2002, 2008 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 [AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t, |
| 17 [AC_COMPILE_IFELSE( |
| 18 [AC_LANG_PROGRAM( |
| 19 [AC_INCLUDES_DEFAULT[ |
| 20 # include <wchar.h>]], |
| 21 [[mbstate_t x; return sizeof x;]])], |
| 22 [ac_cv_type_mbstate_t=yes], |
| 23 [ac_cv_type_mbstate_t=no])]) |
| 24 if test $ac_cv_type_mbstate_t = yes; then |
| 25 AC_DEFINE([HAVE_MBSTATE_T], 1, |
| 26 [Define to 1 if <wchar.h> declares mbstate_t.]) |
| 27 else |
| 28 AC_DEFINE([mbstate_t], int, |
| 29 [Define to a type if <wchar.h> does not define.]) |
| 30 fi]) |
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