5 # Some versions of BeOS define mbstate_t to be an incomplete type,
6 # so you can't declare an object of that type.
7 # Check for this incompatibility with Standard C.
9 # Include stdlib.h first, because otherwise this test would fail on Linux
10 # (at least glibc-2.1.3) because the `_XOPEN_SOURCE 500' definition elicits
11 # a syntax error in wchar.h due to the use of undefined __int32_t.
13 AC_DEFUN(AC_MBSTATE_T_OBJECT,
15 # Check for the mbstate_t type.
16 ac_mbs_tmp=$ac_includes_default
23 AC_CHECK_TYPE(mbstate_t, int)
24 # Restore the default value.
25 ac_includes_default=$ac_mbs_tmp
27 AC_CACHE_CHECK([for mbstate_t object type], ac_cv_type_mbstate_t_object,
33 [mbstate_t x; return sizeof x;],
34 ac_cv_type_mbstate_t_object=yes,
35 ac_cv_type_mbstate_t_object=no)])
36 if test $ac_cv_type_mbstate_t_object = yes; then
37 AC_DEFINE(HAVE_MBSTATE_T_OBJECT, 1,
38 [Define if mbstate_t is an object type.])