BUILD_CC is assigned to CC when do compile. If BUILD_CC has multi-items
such as "ccache gcc", compilation fails with:
make: *** No rule to make target `gcc'. Stop.
Double quote BUILD_CC to avoid this error.
(From OE-Core rev: 4f1fcdbea1629ebf506fb0dbd5df71a588f0372b)
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>