It was passing "None" to bjam, which then parsed it as unknown build target.
(From OE-Core rev: 0a323abab1961caa334035f4f263f1787b3d7cc7)
Signed-off-by: Marko Lindqvist <cazfi74@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>