[Numpy-discussion] build errors

[David Cournapeau]

On Tue, Oct 4, 2011 at 11:54 AM, Miah Wadud Dr (ITCS) <W.Miah at uea.ac.uk> wrote:
> Hello numpy users,
>
> I am trying to build numpy 1.6.1 and am having problems. It prints the following error message:
>
> gcc -pthread -shared build/temp.linux-x86_64-2.4/numpy/core/blasdot/_dotblas.o -L/usr/lib64/atlas -Lbuild/temp.linux-x86_64-2.4 -lptf77blas -lptcblas -latlas -o build/lib.linux-x86_64-2.4/numpy/core/_dotblas.so
> /usr/bin/ld: /usr/lib64/atlas/libptcblas.a(cblas_dptgemm.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC
> /usr/lib64/atlas/libptcblas.a: could not read symbols: Bad value
> collect2: ld returned 1 exit status
> /usr/bin/ld: /usr/lib64/atlas/libptcblas.a(cblas_dptgemm.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC
> /usr/lib64/atlas/libptcblas.a: could not read symbols: Bad value
> collect2: ld returned 1 exit status
> error: Command "gcc -pthread -shared build/temp.linux-x86_64-2.4/numpy/core/blasdot/_dotblas.o -L/usr/lib64/atlas -Lbuild/temp.linux-x86_64-2.4 -lptf77blas -lptcblas -latlas -o build/lib.linux-x86_64-2.4/numpy/core/_dotblas.so" failed with exit status 1

Did you build Atlas by yourself ? If so, it is most likely not usable
for shared libraries (mandatory for any python extension, including
bumpy). You need to configure atlas with the option "-Fa alg -fPIC".

David