Pedro F. Giffuni
2011-06-20 01:41:26 UTC
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:
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?
This is not copyleft but still keeps the patent
thanks in advance,