1PLATFORM=arm64 2O=b/g_$(PLATFORM) 3IS_X64= 4IS_X86= 5IS_ARM64=1 6CROSS_COMPILE= 7MY_ARCH=-mtune=cortex-a53 8USE_ASM=1 9CC=$(CROSS_COMPILE)gcc 10CXX=$(CROSS_COMPILE)g++ 11 12# -march=armv8-a+crc+crypto 13