aarch64--musl--stable-2021.11-1 This is a toolchain provided by the https://toolchains.bootlin.com/ service. This toolchain was built using Buildroot. The complete source code for all components of the toolchain can be found at http://toolchains.bootlin.com/downloads/releases/sources/. The complete license text of all components of the toolchain can be found at http://toolchains.bootlin.com/downloads/releases/licenses/. This toolchain is based on: gcc version 10.3.0 binutils version 2.36.1 gdb version 10.2 musl version 1.2.2 For those who would like to reproduce the toolchain, you can just follow these steps: git clone https://github.com/bootlin/buildroot-toolchains.git buildroot cd buildroot git checkout toolchains.bootlin.com-2021.11-1 curl http://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/build_fragments/aarch64--musl--stable-2021.11-1.defconfig > .config make olddefconfig make make sdk