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[Rustc Book] Explain --cfg's arguments #55111

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Oct 18, 2018
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[Rustc Book] Explain --cfg's arguments #55111

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[Rustc Book] Explain --cfg's arguments
Havvy Oct 16, 2018
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[Rustc Book] Quotes around value in --cfg example
Havvy Oct 16, 2018
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5 changes: 5 additions & 0 deletions src/doc/rustc/src/command-line-arguments.md
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Expand Up @@ -10,6 +10,11 @@ This flag will print out help information for `rustc`.

This flag can turn on or off various `#[cfg]` settings.

The value can either be a single identifier or two identifiers separated by `=`.

For examples, `--cfg 'verbose'` or `--cfg 'feature="serde"'`. These correspond
to `#[cfg(verbose)]` and `#[cfg(feature = "serde")]` respectively.

## `-L`: add a directory to the library search path

When looking for external crates, a directory passed to this flag will be searched.
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