Ouch.  It looks like something is causing the LXC building code to
be run, even on OSX where there's no chance it would work. :(

For good measure, I just tried it with the 1.0.4 tarball and had
the same problem (when enabling qemu after modifying configure).

Someone (not me) would have to investigate why the LXC stuff is
trying to compile.  It's probably just something in the configure.ac
or maybe some ifdef statements needed in the right places in the
code. (no idea)

Don't suppose that's your kind of thing? :)