CJIT

What it does

CJIT is a C interpreter that lets you run C code instantly, without needing to build it first. It is just one 2MB file and can do everything a C compiler does, including call functions from any installed library. It works on Linux, Windows, and MacOSX.

• CA
  CJIT, a single-binary C compiler that can self hostApr 2026 · dyne.org · ▲7

  CJIT started as a hobby project around Fabrice Bellard’s tinyCC and slowly grew into something much more practical. It is now a small portable C compiler and runner that works across Linux, macOS, and Windows, can self host, and is packaged as a single executable. What mattered most to me was keeping the barrier to entry low. You can take one small binary, drop it onto a system, and compile or run C code using the libraries already available there, without setting up a full toolchain or installing a large stack of dependencies. I find that useful for quick prototyping, testing, auditing,…

• LC
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