What problem does it solve?
Building CompCert requires precise coordination of Coq (proof assistant), OCaml, Menhir, and opam environment versions to successfully compile a formally verified C compiler; incorrect dependency order or mismatched versions can cause long, resource-consuming failures. This Skill provides practical guidance to identify version constraints, prepare an opam switch, and execute a memory-aware build so the compiler and its proofs complete correctly.
Core Features & Use Cases
- Dependency Analysis: Read and extract exact Coq, OCaml, and Menhir version requirements from CompCert's configure script before installing toolchain components.
- Opam Environment Setup: Steps to initialize opam, create the correct OCaml switch, and source the opam environment to ensure reproducible builds.
- Memory- and Build Strategy: Tactics for building with limited memory, including sequential builds, swap suggestions, and fallback to smaller job counts; verification checklist to confirm the ccomp binary and a simple compiled program work.
- Use Case: Setting up a CI or developer environment to compile a specific CompCert release on a Linux x86_64 target with deterministic toolchain versions.
Quick Start
Compile CompCert from a release tarball by checking the configure script for supported Coq and OCaml versions, initializing opam with a matching switch, installing Menhir and Coq, running configure for your target, and building with a single-job make while monitoring memory consumption.
