1PLATFORM=x86 2O=b/c_$(PLATFORM) 3IS_X64= 4IS_X86=1 5IS_ARM64= 6CROSS_COMPILE= 7MY_ARCH=-m32 8USE_ASM=1 9CC=$(CROSS_COMPILE)clang 10CXX=$(CROSS_COMPILE)clang++ 11USE_CLANG=1 12