cxvm: per-project GCC and Clang versions on Linux

说明与用途

cxvm 允许在 Linux 上为每个项目固定 GCC/Clang 版本，避免全局更改和需要 root 权限。

问题

Embedded Linux developers need per-project GCC/Clang versions that differ from the system compiler, but existing solutions require root or affect all projects.

结果

cxvm allows developers to pin exact GCC/Clang versions per project, avoiding global changes, root access, and ensuring correct libstdc++ linkage via rpath.

工作流

• Install cxvm via curl or cargo
• Use cxvm install gcc@13 to download GCC 13.4.0
• Navigate to project directory and run cxvm use gcc@13 to pin the compiler and generate .cxvm/ and .cxvmrc
• Run CMake with the generated toolchain file or use cxvm exec -- make for non-CMake projects
• Use cxvm current to verify active compiler

证据

cxvm keeps any number of GCC and Clang versions side by side under ~/.local/share/cxvm, and each project says which one it uses in a small file you commit

来源

The CMake toolchain file adds an rpath to the pinned GCC's lib64, so the program finds the right libstdc++.so.6 on its own

来源

cxvm is written in Rust and ships as one static musl binary

来源