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Image: github.com · C compiler written in Java. Contribute to Javier-Barrio/myCC development by creating an account on GitHub.

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A C23 compiler written with help from Claude

A non-optimising C compiler in Java targeting modern C.

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Credits

  • Repository account Javier-Barrio Source ↗
  • HN submitter int0x80 Source ↗

Earliest dated source: 12 Sept 2026

Code ↗

The full story

myCc is a non-optimising C compiler written in Java, built for fun with Claude and targeting modern C23. It has a preprocessor, parser, semantic analysis and a lowering to three-address code with a VM to run it. It also has a built-in x86-64 assembler and cshell, an interactive C shell in the spirit of Java's jshell. A linker is planned.

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Sources

From the maker's own write-up or code. We summarise what they report; we haven't tested it ourselves.

  • Hacker News: Show HN: A C Compiler written with help of ClaudeCode or repositorygithub.com
    Repository account: Javier-Barrio

    The compiler source and current status.

  • Hacker News discussion (4 points)Forum threadnews.ycombinator.com
    HN submitter: int0x80Posted 12 Sept 2026

    The Show HN post.

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