On 25 July 2012 at 14:30, Jim Kusznir wrote: | Yep, r-base-dev is installed Then I can't help. To check, I installed igraph on my box without a hitch. Takes a moment to build, many sublibraries, but builds fine. So you may be missing something else. Dirk -- Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com