my god, it's a distutils script
distutils being invoked from scons; ld is failing with 'libhammer.a: archive has no index, run ranlib to add one'
distutils and working tests!
python bindings install target works. libhammer.so must be on LD_LIBRARY_PATH.
tidying and a README about this part of the build
Merge pull request #16 from abiggerhammer/python-bindings

Now with a proper install target!