AMD64 build doesn't pass -fPIC when building library modules

[egelmex]

/usr/bin/ld: cfile.o: relocation R_X86_64_PC32 against undefined symbol `select@@GLIBC_2.2.5' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Bad value
collect2: error: ld returned 1 exit status
occbuild: Command failed: gcc -L/home/me92/src/kroc-git/kroc-git/modules/inmoslibs/libsrc/forall -L/home/me92/src/kroc-git/kroc-git/tvm/posix -shared -o liboccam_tvm_file.so cfile.o

[atsampson]

Objects that are going to be included in a shared library on AMD64 have to be built with -fPIC. occbuild could probably take care of this by returning -fPIC in --cflags on AMD64.

[jadudm]

Because I'm trying to learn things, I'll take a stab at this:

Where do I look to make this change? occbuild.in, or m4/occbuild, or somewhere else?

[egelmex]

I had a look at this a couple of weeks ago but forgot to reply.
I think all you need to edit is occbuild.in

There is a variable target_cpu which the build system injects which can be used for the test to see if we are on x86_64.
So I think it's just a case of finding there the gcc flags are inserted and adding the check there... Someone please correct me if I am wrong about this.

Thats's as far as a I got.