Missing libgcc_s

When I try to build numpy on a x86_64 machne using openSUSE10.2 I get

....
C compiler: gcc -pthread -fno-strict-aliasing -DNDEBUG -O2
-fmessage-length=0 -Wall -D_FORTIFY_SOURCE=2 -g -fPIC

creating build/temp.linux-x86_64-2.5/numpy/core/blasdot
compile options: '-DNO_ATLAS_INFO=1 -Inumpy/core/blasdot
-Inumpy/core/include -Ibuild/src.linux-x86_64-2.5/numpy/core
-Inumpy/core/src -Inumpy/core/include -I/usr/include/python2.5 -c'
gcc: numpy/core/blasdot/_dotblas.c
/usr/bin/g77 -g -Wall -shared
build/temp.linux-x86_64-2.5/numpy/core/blasdot/_dotblas.o -L/usr/lib64
-L/usr/lib/python2.5/config -lblas -lpython2.5 -lg2c -o
build/lib.linux-x86_64-2.5/numpy/core/_dotblas.so
/usr/lib64/gcc-lib/x86_64-suse-linux/3.3.5/../../../../x86_64-suse-linux/bin/ld:
cannot find -lgcc_s
/usr/lib64/gcc-lib/x86_64-suse-linux/3.3.5/../../../../x86_64-suse-linux/bin/ld:
cannot find -lgcc_s
error: Command "/usr/bin/g77 -g -Wall -shared
build/temp.linux-x86_64-2.5/numpy/core/blasdot/_dotblas.o -L/usr/lib64
-L/usr/lib/python2.5/config -lblas -lpython2.5 -lg2c -o
build/lib.linux-x86_64-2.5/numpy/core/_dotblas.so" failed with exit status 1

Any pointer how to resolve this problem is appreciated.

Nils

nwagner@iam.uni-stuttgart.de wrote:

> When I try to build numpy on a x86_64 machne using openSUSE10.2 I get
>
> ...
> C compiler: gcc -pthread -fno-strict-aliasing -DNDEBUG -O2
> -fmessage-length=0 -Wall -D_FORTIFY_SOURCE=2 -g -fPIC
>
> creating build/temp.linux-x86_64-2.5/numpy/core/blasdot
> compile options: '-DNO_ATLAS_INFO=1 -Inumpy/core/blasdot
> -Inumpy/core/include -Ibuild/src.linux-x86_64-2.5/numpy/core
> -Inumpy/core/src -Inumpy/core/include -I/usr/include/python2.5 -c'
> gcc: numpy/core/blasdot/_dotblas.c
> /usr/bin/g77 -g -Wall -shared
> build/temp.linux-x86_64-2.5/numpy/core/blasdot/_dotblas.o -L/usr/lib64
> -L/usr/lib/python2.5/config -lblas -lpython2.5 -lg2c -o
> build/lib.linux-x86_64-2.5/numpy/core/_dotblas.so
> /usr/lib64/gcc-lib/x86_64-suse-linux/3.3.5/../../../../x86_64-suse-linux/bin/ld:
> cannot find -lgcc_s
> /usr/lib64/gcc-lib/x86_64-suse-linux/3.3.5/../../../../x86_64-suse-linux/bin/ld:
> cannot find -lgcc_s
> error: Command "/usr/bin/g77 -g -Wall -shared
> build/temp.linux-x86_64-2.5/numpy/core/blasdot/_dotblas.o -L/usr/lib64
> -L/usr/lib/python2.5/config -lblas -lpython2.5 -lg2c -o
> build/lib.linux-x86_64-2.5/numpy/core/_dotblas.so" failed with exit status
> 1
>
> Any pointer how to resolve this problem is appreciated.
The problem is that there is no g77 coming with gcc-4.1.3. Gcc-4.x has
switched to gfortran. The g77 package coming with SUSE is based on
gcc-3.3.5 and SUSE missed to pack the libgcc_s from gcc-3.3.5 into the g77
package.
The best solution would be to make numpy using gfortran instead of g77.
But that may need a lot of porting work.
The other workaround is to get a libgcc_s from a complete gcc-3.3.5
installation ( IIRC SUSE-9.3 used gcc-3.3.5 as system compiler) an copy it
into /usr/lib64/gcc-lib/x86_64-suse-linux/3.3.5