Hi all, I just built numarray with atlas on Fedora core 4 Linux. I used the copy of atlas in extras (yum install atlas-sse2). To get it to build, I edited cfg_packages.py this way: elif os.path.exists('/usr/local/lib/atlas'): # uses atlas, installed in /usr/local/lib lapack_dirs = ['/usr/local/lib/atlas'] lapack_include_dirs += ["/usr/local/include/atlas"] lapack_libs = ['lapack', 'cblas', 'f77blas', 'atlas', 'g2c', 'm'] elif os.path.exists('/usr/lib/sse2/'): # uses atlas, installed in /usr/lib/sse2 ( Fedora Core4 extras ) lapack_dirs = ['/usr/lib/sse2'] lapack_include_dirs += ["/usr/include/atlas"] lapack_libs = ['lapack_atlas','lapack', 'blas'] Did I do that right? would you like to add that stanza to the distribution? I do think it's a good idea to check for the existence of the atlas dir before assuming that it's there. Maybe an exception could be raised if nothing is found? I did find it odd that I couldn't find instructions for how to do this. did I miss something? -Chris -- Christopher Barker, Ph.D. Oceanographer NOAA/OR&R/HAZMAT (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@noaa.gov