With the patch, the zlib extension wasn't built at all.
Without the patch, it gets build just fine.
(From OE-Core rev: 59870a852cf88ecef094db0a2adec168a8997626)
Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>