HI all, I decided I want to try to get this working on my gentoo linux box. I started by emerging the gentoo atlas package. Now I've gone into the Numeric setup.py, and have gotten confused. These seem to be the relevant lines (unchanged from how they came with Numeric 23.3): # delete all but the first one in this list if using your own LAPACK/BLAS sourcelist = [os.path.join('Src', 'lapack_litemodule.c'), # os.path.join('Src', 'blas_lite.c'), # os.path.join('Src', 'f2c_lite.c'), # os.path.join('Src', 'zlapack_lite.c'), # os.path.join('Src', 'dlapack_lite.c') That's all well and good, except that they are all deleted except the first one. And it looks like I don't want that one either. ] # set these to use your own BLAS; library_dirs_list = ['/usr/lib/atlas'] libraries_list = ['lapack', 'cblas', 'f77blas', 'atlas', 'g2c'] # if you also set `use_dotblas` (see below), you'll need: # ['lapack', 'cblas', 'f77blas', 'atlas', 'g2c'] This also seems to be set already. I don't have a '/usr/lib/atlas', so I set: library_dirs_list = [] All the libraries in libraries_list are in /usr/lib/ include_dirs = ['/usr/include/atlas'] # You may need to set this to find cblas.h cblas.h is in : /usr/include/, so I set this to: include_dirs = [] Now everything compiled and installed just fine, but when I try to use it, I get: File "/usr/lib/python2.3/site-packages/Numeric/LinearAlgebra.py", line 8, in ? import lapack_lite ImportError: dynamic module does not define init function (initlapack_lite) SO I tried adding sourcelist = [os.path.join('Src', 'lapack_litemodule.c')] back in. Now I can build and install, but get: Traceback (most recent call last): File "./TestBlas.py", line 4, in ? from LinearAlgebra import * File "/usr/lib/python2.3/site-packages/Numeric/LinearAlgebra.py", line 8, in ? import lapack_lite ImportError: /usr/lib/python2.3/site-packages/Numeric/lapack_lite.so: undefined symbol: dgesdd_ Now I'm stuck. -CHB -- 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