Ubuntu18.04安裝arm-linux-gnueabi-gcc，版本為7.5.0，編譯4.0.0 Linux內核時出現

linux/compiler-gcc7.h: No such file or directory

臨時解決方法：

find "linux/compiler-gcc*.h" in your project, "*" maybe 3 or 5 or others

cp "linux/compiler-gcc*.h" "linux/compiler-gcc7.h".

參考：

https://askubuntu.com/questions/1157084/fatal-error-linux-compiler-gcc7-h-no-such-file-or-directory#:~:text=include/linux/compiler-gcc.h:121:1:%20fatal%20error:%20linux/compiler-gcc7.h,%20this%20basically