The defualt compiler of android kernel is clang and I'd like to compile 
android kernel with gcc. I tried to follow the instructions on 
https://source.android.com/setup/build/building-kernels and used the 
command “*build/build.sh <build.sh> CC=gcc*”. I got the following mistake: 


Cannot use CONFIG_LTO_CLANG: requires clang 5.0 or later


It seems like something related to LTO, so I disabled LTO according to the 
instructions from the above website and tried again. Then still failed:


Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong not 
supported by compiler


By the way, I can build kernel with clang successfully. 

Please help me T.T

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