A package suggestion (as well as a cleaned-up source tarball) is available at Mentors [1, 2]. The corresponding RFS, with more information, is bug #811073 [3]. [1] http://mentors.debian.net/debian/pool/main/l/lbfgsb/lbfgsb_3.0-1.dsc [2] https://mentors.debian.net/package/lbfgsb [3] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=811073 Best, Gard Spreemann