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Add comments to windows_targets.rs

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Chris Denton 2024-07-04 13:27:24 +00:00
parent 34860a56f0
commit 14f4ed2ba3
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1 changed files with 9 additions and 0 deletions
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library/std/src/sys/pal/windows/c/windows_targets.rs
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@ -1,5 +1,14 @@
//! Provides the `link!` macro used by the generated windows bindings.
//!
//! This is a simple wrapper around an `extern` block with a `#[link]` attribute.
//! It's very roughly equivalent to the windows-targets crate.
pub macro link {
($library:literal $abi:literal $($link_name:literal)? $(#[$doc:meta])? fn $($function:tt)*) => (
// Note: the windows-targets crate uses a pre-built Windows.lib import library which we don't
// have in this repo. So instead we always link kernel32.lib and add the rest of the import
// libraries below by using an empty extern block. This works because extern blocks are not
// connected to the library given in the #[link] attribute.
#[link(name = "kernel32")]
extern $abi {
$(#[link_name=$link_name])?