Make disabling DYNAMIC_ARCH on unsupported systems work
Make disabling DYNAMIC_ARCH on unsupported systems work

needs to be unset in the cache for the change to have any effect
xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS