1# serial 9 2 3# From Paul Eggert. 4 5# BeOS 5 has <wchar.h> but does not define mbstate_t, 6# so you can't declare an object of that type. 7# Check for this incompatibility with Standard C. 8 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. 12 13AC_DEFUN([AC_MBSTATE_T], 14 [ 15 AC_CHECK_HEADERS(stdlib.h) 16 17 AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t, 18 [AC_TRY_COMPILE([ 19#if HAVE_STDLIB_H 20# include <stdlib.h> 21#endif 22#include <wchar.h>], 23 [mbstate_t x; return sizeof x;], 24 ac_cv_type_mbstate_t=yes, 25 ac_cv_type_mbstate_t=no)]) 26 if test $ac_cv_type_mbstate_t = no; then 27 AC_DEFINE(mbstate_t, int, 28 [Define to a type if <wchar.h> does not define.]) 29 fi]) 30