bazel: Configure LLVM toolchain#3204
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I'm curious how long it will take to download and configure this on the first build (and if subsequent builds are faster due to the cache). We're talking 10+ GB of unpacked data. |
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Hmm... this was suspiciously fast... on my laptop, it took a small eternity to download and unpack the LLVM toolchain and then recompile everything. |
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I tried clearing the caches and trigger a build again — it recompiled everything and so I believe this is working as intended (it's just faster than I had expected). |
qwandor
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Jun 10, 2026
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I noticed warnings when compiling Rust code both locally and in GitHub CI: > INFO: From Compiling Rust bin mdbook-exerciser (1 file): > warning: the gold linker is deprecated and has known bugs with Rust > | > = help: consider using LLD or ld from GNU binutils instead From what I understand, this is because we haven't configured any C/C++ toolchain for Bazel and it thus picks up what is on the CI runner image. Configuring `toolchains_llvm` fixes the warnings and ensures a hermetic build.
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I noticed warnings when compiling Rust code both locally and in GitHub CI:
From what I understands, this is because we haven't configured any C/C++ toolchain for Bazel and it thus picks up what is on the CI runner image.
Configuring
toolchains_llvmfixes the warnings and ensures a hermetic build.