%otool -L /opt/local/lib/python2.7/site-packages/howto/_howto_swig.so/opt/local/lib/python2.7/site-packages/howto/_howto_swig.so:
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/Python (compatibility version 2.7.0, current version 2.7.0)
libgnuradio-howto.dylib (compatibility version 0.0.0, current version 0.0.0)
/opt/local/lib/libboost_filesystem-mt.dylib (compatibility version 0.0.0, current version 0.0.0)
/opt/local/lib/libboost_system-mt.dylib (compatibility version 0.0.0, current version 0.0.0)
/opt/local/lib/libgruel.3.6.4git.dylib (compatibility version 3.6.4, current version 0.0.0)
/opt/local/lib/libgnuradio-core.3.6.4git.dylib (compatibility version 3.6.4, current version 0.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.9.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.11)