rustc book does not document RUST_TARGET_PATH #128280
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Location
https://doc.rust-lang.org/rustc/targets/custom.html
Summary
this environment variable controls how to look up custom targets, but it is completely undocumented. i had to read src/librustc_back/target/mod.rs in order to figure out how it works.
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Area: Documentation for any part of the project, including the compiler, standard library, and toolsArea: Concerning the implications of different compiler targetsCategory: An issue proposing an enhancement or a PR with one.Relevant to the compiler team, which will review and decide on the PR/issue.