Hi,
I'm returning to sabotage :), I got fedora 22 to build it. The version of gcc is 5.1.1 (I couldn't get an older), and I installed glibc-static.
It fails to build stage0_musl (in the moment of linking), the error message on the log is:
...
rm -f lib/libc.a
ar rc lib/libc.a src/aio/aio.o src/aio/aio_suspend.o src/aio/lio_listio.o src/complex/__cexp.o src/complex/__cexpf.o src/complex/cabs.o src/complex/cabsf.o src/comp$
ranlib lib/libc.a
/bin/ld: src/env/__init_tls.lo: relocation R_X86_64_PC32 against symbol `__libc' can not be used when making a shared object; recompile with -fPIC
/bin/ld: final link failed: Bad value
collect2: ld returned 1 exit status
Makefile:149: recipe for target 'lib/libc.so' failed
make: *** [lib/libc.so] Error 1
make: *** Waiting for unfinished jobs....

I would like to solve this problem before trying to build in another distro, I couldn't figure why its showing up. Could you guys help?