+echo "$as_me:23630: checking if MB_LEN_MAX is usable" >&5
+echo $ECHO_N "checking if MB_LEN_MAX is usable... $ECHO_C" >&6
+if test "${cf_cv_mb_len_max+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+cat >"conftest.$ac_ext" <<_ACEOF
+#line 23637 "configure"
+#include "confdefs.h"
+
+$ac_includes_default
+#include <limits.h>
+int
+main (void)
+{
+
+#if defined(MB_LEN_MAX) && MB_LEN_MAX >= 6
+ ${cf_cv_main_return:-return}(0);
+#else
+#error MB_LEN_MAX is not usable
+#endif
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f "conftest.$ac_objext"
+if { (eval echo "$as_me:23657: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:23660: \$? = $ac_status" >&5
+ (exit "$ac_status"); } &&
+ { ac_try='test -s "conftest.$ac_objext"'
+ { (eval echo "$as_me:23663: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:23666: \$? = $ac_status" >&5
+ (exit "$ac_status"); }; }; then
+ cf_cv_mb_len_max=yes
+else
+ echo "$as_me: failed program was:" >&5
+cat "conftest.$ac_ext" >&5
+cf_cv_mb_len_max=no
+fi
+rm -f "conftest.$ac_objext" "conftest.$ac_ext"
+fi
+echo "$as_me:23676: result: $cf_cv_mb_len_max" >&5
+echo "${ECHO_T}$cf_cv_mb_len_max" >&6
+if test "$cf_cv_mb_len_max" = yes
+then
+
+cat >>confdefs.h <<\EOF
+#define HAVE_CONSISTENT_MB_LEN_MAX 1
+EOF
+
+else
+ { echo "$as_me:23686: WARNING: MB_LEN_MAX is missing/inconsistent in system headers" >&5
+echo "$as_me: WARNING: MB_LEN_MAX is missing/inconsistent in system headers" >&2;}
+fi
+
+echo "$as_me:23690: checking for va_copy" >&5