As I said in the irc I managed to bypass the previous error by deleting #define _EXTERN_INLINE in signal/sigsetops.c
I am now getting the error > /../build/libc_pic.os: In function `__fork': > /../source/posix/../sysdeps/mach/hurd/fork.c:71: undefined reference to > `__start__hurd_atfork_prepare_hook' > /../gcc-cross-sans-libc-i686-pc-gnu-4.8.2/libexec/gcc/i686-pc-gnu/ld: > /../build/libc_pic.os: relocation R_386_GOTOFF against undefined hidden > > symbol `__start__hurd_atfork_prepare_hook' can not be used when making a > shared object > /../gcc-cross-sans-libc-i686-pc-gnu-4.8.2/libexec/gcc/i686-pc-gnu/ld: final > link failed: Bad value > collect2: error: ld returned 1 exit status > ../Makerules:614: recipe for target '/../build/libc.so' failed > make[2]: *** > [/tmp/nix-build-glibc-hurd-cross-i686-pc-gnu-2.18.drv-38/build/libc.so] Error > 1 > make[2]: Leaving directory > '/tmp/nix-build-glibc-hurd-cross-i686-pc-gnu-2.18.drv-38/source/elf' > Makefile:233: recipe for target 'elf/subdir_lib' failed I searched the source files in posix and sysdeps/mach/hurd/ and I can't seem to find any reference to `__start__hurd_atfork_prepare_hook'. Any ideas? Manolis