# `cortex-m-rt-ld` > Zero cost stack overflow protection for ARM Cortex-M devices See [this blog post](http://blog.japaric.io/stack-overflow-protection) for background information and [`cortex-m-rt`] documentation for usage instructions. [`cortex-m-rt`]: https://docs.rs/cortex-m-rt/0.3.13/cortex_m_rt/#zero-cost-stack-overflow-protection **IMPORTANT** `cortex-m-rt-ld` requires that the binary links to `cortex-m-rt` v0.3.13 or newer. ## License Licensed under either of - Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) - MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) at your option. ### Contribution Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.