require 'formula' class Mathomatic < Formula homepage 'http://www.mathomatic.org/math/' url 'http://mathomatic.org/mathomatic-16.0.5.tar.bz2' sha1 'aaaf4df4aa3dc9ea748211278e657c2195858c24' def install ENV['prefix'] = prefix system "make READLINE=1" system "make m4install" cd 'primes' do system 'make' system 'make install' end end end