rust-lang / rust-lang/cargo

How can debuginfo be detected from a build.rs ?

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A-build-scripts A-profiles C-feature-request S-needs-info
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Rust
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Description

Does cargo define an environment variable with its value from the profile ? (I couldn't find any).

If so, is this value updated with the RUSTFLAGS/ ./cargo/config ?

The most portable way I can think of, of doing this correctly, is probably to just invoke cargo metadata from the build.rs, and just scan it for debuginfo=PAT and parse that.

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Research direction

Start by tracing how Cargo exposes profile information to build.rs and how RUSTFLAGS, cargo/config, and cargo metadata represent debuginfo. Determine whether an existing portable value or supported mechanism exists; done should be a decided, documented approach or a clearly scoped change, since the issue does not name files or tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
build-system
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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