arm-cmake-toolchains

CMake toolchain files for bare-metal ARM Cortex development.

Available Toolchains

File	Toolchain
arm_none_eabi_gcc.cmake	ARM GNU Toolchain (GCC)
arm_none_eabi_llvm.cmake	LLVM/Clang with arm-none-eabi target

Both toolchains configure all standard CMake tools (compiler, linker, objcopy, size, etc.) and set up proper sysroot detection.

Usage

Copy the toolchain file you need into your project, then pass it to CMake:

cmake -B build -DCMAKE_TOOLCHAIN_FILE=arm_none_eabi_gcc.cmake
cmake --build build

Or with a preset:

{
    "configurePresets": [
        {
            "name": "arm-gcc",
            "toolchainFile": "${sourceDir}/arm_none_eabi_gcc.cmake"
        }
    ]
}

Customisation

All tool paths can be overridden before including the toolchain file. For example, to use a specific GCC version:

cmake -B build \
    -DCMAKE_C_COMPILER=/opt/arm-gnu-toolchain-13/bin/arm-none-eabi-gcc \
    -DCMAKE_CXX_COMPILER=/opt/arm-gnu-toolchain-13/bin/arm-none-eabi-g++ \
    -DCMAKE_TOOLCHAIN_FILE=arm_none_eabi_gcc.cmake

Licence

This project is licensed under the Apache License Version 2.0.
Copyright (C) 2025 The Embedded Society https://github.com/embedded-society/arm-cmake-toolchains.
See the attached LICENCE file for more info.