DBD-mysql-4.018-hYHpKY$ otool -D `mdfind libmysqlclient.16.dylib` /usr/local/mysql-5.5.9-osx10.6-x86_64/lib/libmysqlclient.16.dylib: libmysqlclient.16.dylib We can fix this with install_name_tool though: DBD-mysql-4.018-hYHpKY$ sudo install_name_tool -id /usr/local/mysql-5.5.9-osx10.6-x86_64/lib/libmysqlclient.16.dylib /usr/local/mysql-5.5.9-osx10.6-x86_64/lib/libmysqlclient.16.dylib DBD-mysql-4.018-hYHpKY$ otool -D `mdfind libmysqlclient.16.dylib` /usr/local/mysql-5.5.9-osx10.6-x86_64/lib/libmysqlclient.16.dylib: /usr/local/mysql-5.5.9-osx10.6-x86_64/lib/libmysqlclient.16.dylib