Skip to content

docs: clarify target.'cfg(...)' doesnt respect cfg from build script #14312

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Sep 30, 2024
Merged

docs: clarify target.'cfg(...)' doesnt respect cfg from build script #14312

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 3 additions & 3 deletions src/doc/src/reference/config.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1173,9 +1173,9 @@ rustflags = ["…", "…"]
```

`cfg` values come from those built-in to the compiler (run `rustc --print=cfg`
to view), values set by [build scripts], and extra `--cfg` flags passed to
`rustc` (such as those defined in `RUSTFLAGS`). Do not try to match on
`debug_assertions` or Cargo features like `feature="foo"`.
to view) and extra `--cfg` flags passed to `rustc` (such as those defined in
`RUSTFLAGS`). Do not try to match on `debug_assertions`, `test`, Cargo features
like `feature="foo"`, or values set by [build scripts].

If using a target spec JSON file, the [`<triple>`] value is the filename stem.
For example `--target foo/bar.json` would match `[target.bar]`.
Expand Down