* build/apr_hints.m4: Reenable kqueue on current versions of Mac OS X,

  as it seems to work now that we've fixed the bug in our kqueue code.


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@386202 13f79535-47bb-0310-9956-ffa450edef68

build/apr_hints.m4

@@ -187,11 +187,21 @@ dnl	       # Not a problem in 10.20.  Otherwise, who knows?
 	APR_ADDTO(CPPFLAGS, [-DRHAPSODY])
 	;;
     *-apple-darwin*)
+        if test -x /usr/sbin/sysctl; then
+            os_version=`/usr/sbin/sysctl -n kern.osrelease | sed 's/\.//g'`
+        else
+            os_version=000
+        fi
+
 	APR_ADDTO(CPPFLAGS, [-DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK -no-cpp-precomp])
 	APR_SETIFNULL(apr_posixsem_is_global, [yes])
         APR_SETIFNULL(ac_cv_func_poll, [no]) # See issue 34332
-        # Broken in 10.4.x
-        APR_SETIFNULL(ac_cv_func_kqueue, [no]) 
+
+        # kqueue has been confirmed to work in OS X 10.4.5, its status in
+        # earlier OS X releases is not currently known, so it is disabled.
+        if test $os_version -lt "850"; then
+          APR_SETIFNULL(ac_cv_func_kqueue, [no]) 
+        fi
 	;;
     *-dec-osf*)
 	APR_ADDTO(CPPFLAGS, [-DOSF1])