Le Max2 Kernel Build mini-Howto

1. Build

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• get toolchain From android git server, codesourcery etc.

  • aarch64-linux-android-4.9

• Unpack kernel source Suppose kernel source has been unpacked to <kernel> dir.

• export env variables export correct CROSS_COMPILE to use the toolchain path you have downloaded.

$ export CROSS_COMPILE="<android_platform_dir>/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-"

$ export JOBS=16    # Can be CPU core # x 2

• build kernel

$ cd <kernel>

$ make -C $PWD O=$PWD/out ARCH=arm64 msm-perf_defconfig

$ make -j$JOBS -C $PWD O=$PWD/out ARCH=arm64 KCFLAGS=-mno-android

$ make -j$JOBS -C $PWD O=$PWD/out ARCH=arm64 KCFLAGS=-mno-android modules

2. Output files

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• Kernel: out/arch/arm64/boot/Image
• Kernel modules: out/drivers/*/*.ko

3. Clean up

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$ rm -rf out