Mold High Speed Linker Being Rewritten In Rust, Hopes To Be The Default Linker On Linux
The Mold high-performance linker is undergoing a major rewrite from C++ to Rust to leverage the language's safety guarantees and maturity. The project aims to release Mold 3.0 with enhanced compatibility features to become the default system linker on Linux distributions. Additionally, developers are exploring the implementation of incremental linking to further improve performance for specific workloads.
- ▪Mold 2.42.1 was released as a patch update, announcing plans for a complete rewrite of the linker in Rust for the upcoming 3.0 version.
- ▪Lead developer Rui Ueyama states that the primary goal of Mold 3.x is to make the tool suitable for adoption as /usr/bin/ld by Linux distributions.
- ▪The project intends to implement missing linker script features to support kernel and firmware linking, which is necessary for replacing the default GNU ld.
- ▪Mold is currently exploring designs to add incremental linking support while maintaining its existing simplicity and reliability.
- ▪This rewrite follows the trend of other performance-oriented linkers like Wild, which are also written in Rust.
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| Canonical URL | https://www.phoronix.com/news/Mold-Linker-In-Rust-Coming |
| Publication time | Fri, 11 Sep 2026 09:21:42 -0400 |
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Mold High Speed Linker Being Rewritten In Rust, Hopes To Be The Default Linker On Linux Written by Michael Larabel in Programming on 11 September 2026 at 09:21 AM EDT. Add A Comment The Mold high performance linker that typically outperforms the likes of LLVM lld, GNU LD, Wild, and others is being rewritten in the Rust programming language and also has an ambitious goal of being adopted as the default linker on Linux systems. Mold 2.42.1 was released today as a new patch release for this open-source linker. But most interesting in the Mold 2.42.1 announcement are the plans for Mold 3.0 to succeed it. Mold has been going through a rewrite from C++ to Rust.
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