I've install all the dependencies that are documented, and I'd like to get the curve fitting portion of relax working on Mac OS 10.4. When I type 'scons' in the relax directory, I get an error with some undefined symbols, as below. A brief internet search seems to suggest that I need to use something call 'distutils,' but I'm not sure how this works! Any help would be appreciated. Tyler Output: scons: Reading SConscript files ... scons: done reading SConscript files. scons: Building targets ... gcc -o maths_fns/relax_fit.so -bundle -bundle_loader /Library/Frameworks/Python.framework/Versions/2.5/bin/python -dynamic math s_fns/c_chi2.os maths_fns/exponential.os maths_fns/relax_fit.os /usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: Undefined symbols: _PyCObject_AsVoidPtr _PyCObject_Type _PyErr_Format _PyExc_RuntimeError _PyImport_ImportModule _PyObject_GetAttrString _PyArg_ParseTuple _PyArg_ParseTupleAndKeywords _PyErr_Print _PyErr_SetString _PyExc_ImportError _PyList_New _PyList_SetItem _PyList_Type _PyType_IsSubtype _Py_BuildValue _Py_InitModule4 __Py_NoneStruct collect2: ld returned 1 exit status scons: *** [maths_fns/relax_fit.so] Error 1 scons: building terminated because of errors.