Every tutorial I find about Android Kernel compilation (like this: https://gist.github.com/P1N2O/b9b2604c58aa4d7486e2fc0d327d23dc) does things like this:
make O=out ARCH=arm64 <defconfig>
PATH="<path to clang folder>/bin:<path to gcc folder>/bin:${PATH}" \
make -j$(nproc --all) O=out \
ARCH=arm64 \
CC=clang \
CLANG_TRIPLE=aarch64-linux-gnu- \
CROSS_COMPILE=aarch64-linux-android-
where CLANG_TRIPLE are things from GCC's bin folder. Why is GCC still needed? By the way, what does CLANG_TRIPLE and CROSS_COMPILE mean?