Tomcat native 无法在 Mac OS X 下使用，什么原因？

似乎 tomcat-native 1.1.20 还是无法支持 OS/X (10.6.8).
提示信息：
INFO: The APR based Apache Tomcat Native library which allows optimal
performance in production environments was not found on the
java.library.path:
.:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
Jul 13, 2011 11:02:30 AM org.apache.coyote.http11.Http11Protocol init

编译和安装
`./configure --with-apr=/usr/bin/apr-1-config
--with-java-home=/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/
make clean
make
sudo cp .libs/libtcnative-1.0.1.20.dylib /usr/lib/java
sudo ln -s /usr/lib/java/libtcnative-1.0.1.20.dylib
/usr/lib/java/libtcnative-1.dylib`
大家有什么好建议吗？