To compile dhcp_relay
  make
  make install

Note: the toolchain must be present in the parent directory, in a
sub-directory named gcc-3.4.2, and the tuple for the toochain
must be mips-linux-uclibc. That is, the cross-gcc must be
accessible as:
  ../gcc-3.4.2/bin/mips-linux-uclibc-gcc
