Aarch64 Prebuilt GCCs

Bleeding edge GNU/Linaro GCC toolchains built from sources using latest git version of crosstool-NG. These prebuilt toolchains are primarily for building kernels, hence only CC compiler is exist. Additionally, all toolchains are generic-optimized so it should be compatible with all ARM64 devices.

Cloning the toolchain

Run this command anywhere on your environment:

$ git clone git://github.com/krasCGQ/aarch64-linux-android -b <branch> --depth=1

Where <branch> is one of these branches:

• a53-7.x - GNU GCC 7.2.1, optimized for Cortex-A53 (deprecated)
• opt-gnu-7.x - GNU GCC 7.3.1 (deprecated)
• opt-gnu-8.x - GNU GCC 8.1.1
• opt-linaro-7.x - Linaro GCC 7.3.1

Using the toolchain

I'm assuming that you're building kernels and have all patches included in your kernel source. For that, pass CROSS_COMPILE variable as one of make parameters.

$ make ARCH=arm64 CROSS_COMPILE=</path/to/toolchain>/bin/aarch64-opt-linux-android- ...

I recommend this way since exporting CROSS_COMPILE doesn't always work.

Have something wrong? It's your own job to figure and fix all issues you may counter.

Also, to be warned: This toolchain is NOT COMPATIBLE for use with clang.

Resources

• crosstool-NG defconfig
• Script to update git projects and merge crosstool-NG patches
• ISL patch (essentialy reverts) - required if you choose to use latest ISL from git as one of your self-built toolchain components