android_kernel_toolchain/README.md

EEBBK S6 Kernel Toolchain

Build toolchain for the EEBBK S6 (SM7150 / sdmmagpie) Android kernel.

Contains:

• clang-11.0.1 (AOSP prebuilt 6443078) — matches stock firmware compiler
• binutils-2.27 (GNU) — matches stock firmware assembler/linker

The kernel source is in a separate repository: android_kernel_eebbk_sm6150 (CAF LA.UM.9.1.c25, kernel 4.14.190).

Install

git clone <this-repo>   # e.g. android_kernel_toolchain
cd android_kernel_toolchain
./setup.sh <kernel-repo-path>

Example:

git clone http://<host>:3003/huang1057/android_kernel_toolchain.git
git clone http://<host>:3003/huang1057/android_kernel_eebbk_sm6150.git

cd android_kernel_toolchain
./setup.sh ../android_kernel_eebbk_sm6150

This unpacks clang and binutils into <kernel-repo-parent>/toolchain/:

<parent>/
├── android_kernel_eebbk_sm6150/   <- kernel source
└── toolchain/
    ├── android_prebuilts_clang_host_linux-x86_clang-6443078-10.0/
    └── binutils-2.27-install/

Build the kernel

cd android_kernel_eebbk_sm6150

export TC=../toolchain
export ARCH=arm64
export CROSS_COMPILE=$TC/binutils-2.27-install/bin/aarch64-linux-gnu-
export CLANG=$TC/android_prebuilts_clang_host_linux-x86_clang-6443078-10.0
export PATH=$CLANG/bin:$PATH
export LOCALVERSION=-perf

make vendor/sdmsteppe-perf_defconfig

make -j$(nproc) \
  CC="python3 ./scripts/gcc-wrapper.py $CLANG/bin/aarch64-linux-gnu-clang" \
  HOSTCC=gcc HOSTCXX=g++

gzip -n -9 -c arch/arm64/boot/Image > Image.gz

Output

• arch/arm64/boot/Image — uncompressed kernel
• Image.gz — compressed kernel (for boot.img packing)

Notes

• LOCALVERSION=-perf keeps the vermagic at 4.14.190-perf (no trailing +), required so stock vendor kernel modules load.
• Do NOT use LLVM_IAS=1. GNU binutils 2.27 as is required (-no-integrated-as is handled by the toolchain).
• Requires Python 3 (for gcc-wrapper.py), gcc (host), on Linux x86_64.