Hi list, I searched the archives and found various threads regarding this issue and I have not found a solution there. software versions: gfortran 4.0.1 atlas 3.6.0 lapack 3.0 Basically numpy spits out this message when I try to compile it: gcc: numpy/linalg/lapack_litemodule.c /usr/bin/gfortran -shared build/temp.linux-x86_64-2.4/numpy/linalg/lapack_litemodule.o -L/usr/local/lib/atlas -llapack -lptf77blas -lptcblas -latlas -lgfortran -o build/lib.linux-x86_64-2.4/numpy/linalg/lapack_lite.so /usr/bin/ld: /usr/local/lib/atlas/liblapack.a(dlamch.o): relocation R_X86_64_32S against `a local symbol' can not be used when making a shared object; recompile with -fPIC /usr/local/lib/atlas/liblapack.a: could not read symbols: Bad value collect2: ld returned 1 exit status /usr/bin/ld: /usr/local/lib/atlas/liblapack.a(dlamch.o): relocation R_X86_64_32S against `a local symbol' can not be used when making a shared object; recompile with -fPIC /usr/local/lib/atlas/liblapack.a: could not read symbols: Bad value collect2: ld returned 1 exit status error: Command "/usr/bin/gfortran -shared build/temp.linux-x86_64-2.4/numpy/linalg/lapack_litemodule.o -L/usr/local/lib/atlas -llapack -lptf77blas -lptcblas -latlas -lgfortran -o build/lib.linux-x86_64-2.4/numpy/linalg/lapack_lite.so" failed with exit status 1 However I have compiled all the software explicitly with the -fPIC flag on. Attached is my make.inc for LAPACK and my Makefile for ATLAS. I followed these instructions to create a hybrid LAPACK/ATLAS archive: http://math-atlas.sourceforge.net/errata.html#completelp Interestingly enough, if I just use the bare version of ATLAS, numpy compiles fine. If I use the bare version of LAPACK, numpy compiles fine . Any help would be greatly appreciated. -Yi