Hello; Just thought I''d bring the old subject of FreeBSD''s Dtrace licensing issue again: According to the FreeBSD developer that ported it (RIP): "If I add CDDL code to FreeBSD''s generic kernel and ship the binary, I change the license from one that is purely BSD to include CDDL clauses. I am told by the FreeBSD community that isn''t acceptable. So I am not allowed to do it." I may be misinterpreting but it would seem like just adding a #include to CDDL code will make all the file CDDL''d too. This is the idea behind "copyleft", and while it is respectable and serves a purpose, this doesn''t really work well for headers. FreeBSD has a project proposal to try to avoid the CDDL in order to ship a working Dtrace with the kernel: http://wiki.freebsd.org/IdeasPage#head-18730945e29664d263fda697f5bc95fbe52d6271 Unfortunately this would also take FreeBSD into an obscure patent ground and it wouldn''t be acceptable for either Oracle or FreeBSD. I would like to suggest an intermediate approach: can Oracle relicense the Dtrace headers (only) under the Apache Source license? http://www.apache.org/licenses/LICENSE-2.0.html This is not copyleft but still keeps the patent protection. thanks in advance, Pedro.