1 # mbstate_t.m4 serial 9 2 dnl Copyright (C) 2000, 2001, 2002 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]) 31
