ROllerozxaThe blog post is now live. Trying out Claude's C Compiler, a vibe coded #AI slop #C compiler consisting of 180k lines of #Rust code. I compiled a simple Hello World program, my puzzle game Tensy, #ClassiCube and finally the #Linux kernel using it, getting a bare minimum RISC-V Linux environment running in QEMU. Also a brief mention of #slimcc at the end, another small C compiler.
It ended up being yet another really long blog post, so I hope I didn't forget anything.
https://voxelmanip.se/2026/02/06/trying-out-claudes-c-compiler/
Trying Out Claude's C Compiler
On the 5th of February Anthrophic published an article on their engineering blog detailing the creation of a C compiler using a team of parallel Claude agents over the course of two weeks. The compiler in question is called Claude’s C Compiler (ccc for short) and is a ~180k line Rust codebase that they published onto GitHub. Of course, this announcement raised a lot of questions about the accuracy of their claims and the usability of the compiler, as well as the implications of a swarm of AI agents allegedly being able to write a full C compiler. It claims to be able to compile the Linux kernel, along with many other high profile C projects, but does it actually work? I became intrigued, and decided to try compiling a Hello World program, my game Tensy, ClassiCube, and finally the Linux kernel.