Hi, I've been carrying these modifcations of the build-in compiler command line arguments for the 32-bit Intel compilers for quite some while now; maybe they are interesting for other people as well... I've been using this with ifort (IFORT) 10.1 20080801 on a Suse Linux 10.3. Rationale for individual changes: - numpy-1.3.0rc1/numpy/distutils/fcompiler/intel.py: - For pentiumM's, options are changed from '-tpp7 -xB' to '-xN': The compiler documentation says that -tpp<?> and -xB are deprecated and will be removed in future versions. - 'linker_so' gets an additional "-xN": If code is compiled with -x<?>, additional "vector math" libraries (libvml*) need to be linked in, or loading the shared objects may fail at runtime; so I added this to the link command. If other '-x<?>' options are used by the numpy distutils, the linker command should be modified accordingly - so this patch probably is not generic. - numpy-1.3.0rc1/numpy/distutils/intelccompiler.py: - A dedicated C++ compiler (icpc) is introduced and used for compiling C++ code, *and* for linking: I have found that C++ extensions require additional runtime libraries that are not linked in with the normal icc command, causing the loading of C++ extensions to fail at runtime. This used to be a problem with scipy in earlier versions, but I think currently, there's no C++ any more in scipy (but I could be wrong). Hope this is useful, Christian.