Slimcc: C23 compiler with C2y/GNU extensions for x86-64 Linux/BSD, written in C9
Slimcc is a new C compiler that has evolved significantly from its predecessor, chibicc. It supports a wide range of C standards and GNU extensions, making it suitable for various projects. The compiler is designed to be portable and efficient, with a focus on compatibility with existing build systems.
- ▪Slimcc started as a fork of Rui Ueyama's chibicc and has undergone extensive code rewriting.
- ▪It includes optimizations, reduced RAM usage, and support for both older and newer C standards.
- ▪The compiler is capable of bootstrapping a chroot environment with musl and userland compiled by itself.
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Record
| Original publisher | GitHub |
| Canonical URL | https://github.com/fuhsnn/slimcc/tree/main |
| Publication time | Mon, 25 May 2026 20:42:05 +0000 |
| Retrieval time | 2026-05-25T21:07:40.563Z |
| Last seen | 2026-05-25T21:07:40.563Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | TJ7txX0cRADL |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
slimcc started as fork of Rui Ueyama's chibicc, after three years about 85% of the code is new. It fixed issues compiling real projects, added basic codegen optimizations, reduced RAM footprint, mostly-completed support for older (C89) to newer (C23) standards, and implemented commonly used GNU extensions. It is mature enough to serve as a drop-in C compiler for most portably-written programs in glibc environment, and able to bootstrap a chroot with musl/binutils/userland all compiled by itself.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.