wget -c http://www.cl.cam.ac.uk/~mgk25/jbigkit/download/jbigkit-2.1.tar.gz
tar -xzf jbigkit-2.1.tar.gz
cd jbigkit-2.1
make # Doesn't mind -j#
# No 'install' make target
install libjbig/*.a /usr/lib
install libjbig/*.h /usr/include
install pbmtools/jbgtopbm /usr/bin
install pbmtools/jbgtopbm85 /usr/bin
install pbmtools/pbmtojbg /usr/bin
install pbmtools/pbmtojbg85 /usr/bin