
For gcc 2.5.8 I had to setup the following, after installing my gcc 1.3.7 floppy:

cp /usr/local/bin/gas /usr/local/bin/as
install gmake
install texinfo
install fileutils (or at least copy ginstall to /usr/local/gnu/bin/install)

unpack 2.5.8 in /u/tmp
copy libgcc*.a to /usr/local/lib
make install ought to work now