Hi Using MacPorts, the gfortran compiler, from gcc-4.2.x, is installed as gfortran-mp-4.2. I have been trying to build scipy with this compiler and found that that numpy I need to build and install with $ python setup.py config_fc --fcompiler gnu95 \ --f77exec /opt/local/bin/gfortran-mp-4.2 \ --f90exec /opt/local/bin/gfortran-mp-4.2 build $ python setup.py install --prefix=${NUMPY_LOCATION} however using the above for scipy fails on the install phase with it being unable to locate a fortran compiler. I therefore need to install scipy with $ python setup.py config_fc --fcompiler gnu95 \ --f77exec /opt/local/bin/gfortran-mp-4.2 \ --f90exec /opt/local/bin/gfortran-mp-4.2 install --prefix=${SCIPY_LOCATION} Is this expected, as I would have expected install to inherit the options that where used during the build phase? Cheers Adam PS: I'm using numpy-1.0.4 and scipy-0.6.0