C2Rust Transpiler

• c2rust

  17 3,043 9.9 Rust

  Migrate C code to Rust

  

  In the chart at [1], this step is represented by a magic wand.

  (I wanted to give some examples, but https://c2rust.com/ seems to not be translating today.)

  [1] https://c2rust.com/manual/

• unsafe-libyaml

  1 23 10.0 Rust

  libyaml transpiled to rust by c2rust

  I used it with great success for transpiring libyaml from C to Rust. I even set up Miri to run the upstream library's entire transpiled test suite, and the fact it passes is validation of absence of UB in the original C code.

  The transpiled library now serves as the YAML backend for the widely used serde_yaml crate. Having serde_yaml be pure-Rust code instead of linking C is advantageous for painless cross-compilation as well as making downstream projects runnable in Miri.

  https://github.com/dtolnay/unsafe-libyaml

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• cargo-zigbuild

  14 603 9.1 Rust

  Compile Cargo project with zig as linker

  

  Zig also takes this approach, and even exposes its C compiler (which if I recall correctly is basically Clang plus diverse sysroots and other customisation out of the box) as a separate `zig cc`.

  I do a lot of work in Rust, and cross-compilation can be a pain when you have a lot of C dependencies. Fortunately https://github.com/messense/cargo-zigbuild exists. It sounds crazy, but using Zig's inbuilt C compiler to help build my Rust projects has been the smoothest option I've found.

  I can't help but wonder if it would be worth it for Rust to follow D and Zig by shipping its own inbuilt C compiler, even if they still want to also support external C toolchains. It should be roughly the same effort as it was for Zig, given that they both use LLVM.

• doom

  1 429 8.6 C

  DOOM translated from C to V. (by vlang)

  

• dmd

  56 2,712 9.9 D

  dmd D Programming Language compiler

  

  > Zig also takes this approach

  D took the much more fun way, which is to implement a new C parser from scratch and tweak the D lexer and semantics to handle the differences of C. It's not too bad, about 5000 lines of D:

  https://github.com/dlang/dmd/blob/master/compiler/src/dmd/cp...

  Best of all, it's Boost licensed, meaning anyone can use it for any purpose, even commercial use.

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