Hi Paul, > I ran configure ./configure --prefix=/usr/local/gnu/gcc-4.1.2 --enable-threads=posix --enable-languages=c,c++ --with-system-zlib Running ./configure is not supported, as per the documentation... http://gcc.gnu.org/install/configure.html On the systems I've tried, I have never been able to get ./configure to work. So I've configured as per the instructions. HTH, --Eljay