* in addition to the -march=foobar, we also need to pass -DFOOBAR to
gf-complete sources' cflags, so that the SIMD instructions can be
generated as expected.
* also extract the compiler support for instruction extensions detections
into SIMDExt.cmake.
* and only check the compiler support if CMAKE_SYSTEM_PROCESSOR matches
with the instruction-set/arch to be checked.
Signed-off-by: tone.zhang <tone.zhang@linaro.org>
Signed-off-by: Kefu Chai <kchai@redhat.com>
