Problem with compiling hello.c

from [1]:

Configured with: /root/buildroot/toolchain_build_nios2/gcc-3.4.6/configure --prefix=/opt/nios2 --build=i386-pc-linux-gnu --host=i386-pc-linux-gnu --target=nios2-linux-uclibc --enable-languages=c,c++ --disable-__cxa_atexit --enable-target-optspace --with-gnu-ld --disable-shared --disable-nls --enable-threads --enable-multilib
Thread model: posix

the prefix seems to offer a clue:

--prefix=/opt/nios2

maybe the prefix should be in your /home/working/... directory. is the prefix is defined in:

Reading specs from /home/working/nios2/bin/../lib/gcc/nios2-linux-uclibc/3.4.6/specs

note: i haven't tinkered with this, just took a look at your outputs