"If you want to use libtool in a regular Makefile (or Makefile.in), you are on your own." http://www.gnu.org/software/libtool/manual/libtool.html#Makefile-rules Just to get this clear, I'd love to have versioned SONAMEs with Octave, it would make transitions a lot easier. But I simply don't have the knowledge to go that deep into Octave's build process. Thomas