3 The common cases of linking with Rust have been covered earlier in this book,
4 but supporting the range of linking possibilities made available by other
5 languages is important for Rust to achieve seamless interaction with native
10 There is one other way to tell `rustc` how to customize linking, and that is via
11 the `link_args` attribute. This attribute is applied to `extern` blocks and
12 specifies raw flags which need to get passed to the linker when producing an
13 artifact. An example usage would be:
16 #![feature(link_args)]
18 #[link_args = "-foo -bar -baz"]
23 Note that this feature is currently hidden behind the `feature(link_args)` gate
24 because this is not a sanctioned way of performing linking. Right now `rustc`
25 shells out to the system linker, so it makes sense to provide extra command line
26 arguments, but this will not always be the case. In the future `rustc` may use
27 LLVM directly to link native libraries, in which case `link_args` will have no
30 It is highly recommended to *not* use this attribute, and rather use the more
31 formal `#[link(...)]` attribute on `extern` blocks instead.