An open-source developer has posted a patch series introducing a new GCC back-end for WebAssembly (WASM), offering a potential alternative to the LLVM/Clang toolchain that currently dominates C/C++ to WASM compilation on Linux.
The patch series, around 3,000 lines of code, is posted as a "request for comments" (RFC) and has not yet been approved by the GCC Steering Committee.
This is the first notable WASM activity for GCC in years; a prior proposal from nearly a decade ago was never merged.
The back-end is in early development and lacks features such as WASM reference types, tables, exceptions, debug info, and data sections.
A GCC Wiki page provides early details and instructions for building this back-end along with related WASM components.
Conclusion:
The GCC Steering Committee has yet to approve this back-end, and Linux developers targeting WebAssembly should watch for further updates as the RFC progresses.
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