我正在尝试安装subversion 1.7.2(从默认的Lion版本升级,1.6？).
运行sudo port install subversion安装成功完成,但运行"svn --version"时收到此错误
$ svn --version
dyld: Library not loaded: /opt/local/lib/libexpat.1.dylib
Referenced from: /opt/local/bin/svn
Reason: Incompatible library version: svn requires version 8.0.0 or later, but libexpat.1.dylib provides version 7.0.0
Trace/BPT trap: 5
如何升级libexpat库以使安抚SVN？