Arm GNU Toolchain vs Zephyr SDK
Arm GNU Toolchain
developer.arm.com
Zephyr SDK
zephyrproject.orgSide by side
| Figure | Arm GNU Toolchain | Zephyr SDK |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Embedded Systems Toolchains | 8.1 (#8) | 7.1 (#24) |
| Purpose | The toolchain lets partners, developers, and the community use features from recent Arm architectures and open-source projects. | Zephyr SDK provides GNU and LLVM toolchains for Zephyr-supported architectures, plus host tools including custom QEMU and OpenOCD. |
| Support | Releases are community supported on a best-effort basis, and Arm does not guarantee prompt answers on public forums or fixes in future releases. | Community support is provided through mailing lists and Discord. |
Plans
In their own words
Arm GNU Toolchain
Arm GNU Toolchain is a free, open-source set of tools for building C and C++ software for Arm processors. Its integrated, validated packages are based on GCC, Binutils, glibc, Newlib, and GDB, including a debugger. Variants cover bare-metal embedded development as well as Linux kernel and application work. Target processors include Arm A-, R-, and M-profile CPUs, such as Cortex-A, Cortex-R, Cortex-M, and Neoverse. Arm lists cross-toolchains for Windows x86, Linux x86_64 and AArch64, and macOS x86_64 hosts. Releases are published twice a year and checked with the relevant source projects' test suites for regressions. Support is community-based on a best-effort basis; Arm does not promise prompt public-forum answers or fixes in later releases. The releases come without warranty and may not suit particular use cases. From release 15.3.Rel1 onward, new releases are published only through Arm's GitLab project; the developer.arm.com download page is deprecated.
Zephyr SDK
Zephyr SDK has no write-up on Specifiction yet; its figures are above.