Get the latest gtk and glib tarballs. If it complains about something missing, get tarballs for that too.

unpack glib and go into it's directory.
do:

./configure
make install

unpack gtk and go into it's directory.
do:

export LD_LIBRARY_PATH=/usr/local/lib
ldconfig
./configure
make install

unpack gtk-gnutella's tar file and go into it's directory.
do:

ldconfig
./configure
make install-strip