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Jul 18, 2024
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Update extern linking documentation #127908

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15 changes: 9 additions & 6 deletions src/doc/rustc/src/codegen-options/index.md
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Expand Up @@ -410,13 +410,16 @@ See also the [`no-prepopulate-passes`](#no-prepopulate-passes) flag.

By default, `rustc` prefers to statically link dependencies. This option will
indicate that dynamic linking should be used if possible if both a static and
dynamic versions of a library are available. There is an internal algorithm
for determining whether or not it is possible to statically or dynamically
link with a dependency. For example, `cdylib` crate types may only use static
linkage. This flag takes one of the following values:
dynamic versions of a library are available.

* `y`, `yes`, `on`, `true` or no value: use dynamic linking.
* `n`, `no`, `off` or `false`: use static linking (the default).
There is [an internal algorithm](https://github.com/rust-lang/rust/blob/master/compiler/rustc_metadata/src/dependency_format.rs)
for determining whether or not it is possible to statically or dynamically link
with a dependency.

This flag takes one of the following values:

* `y`, `yes`, `on`, `true` or no value: prefer dynamic linking.
* `n`, `no`, `off` or `false`: prefer static linking (the default).

## profile-generate

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