Log Message:
Set the CC variable to .../bin/gcc (not .../bin/cc):  on some systems,
there exists a 'cc', leading to buildlink creating a 'cc' wrapper pointing
to the original 'cc', which then won't work with the gcc flags, while the
'gcc' wrapper does work (since packages simply call 'cc' (or 'gcc') and
rely on buildlink having prepended the path to the right wrapper).