Generate docs.rs documentation with doc_auto_cfg (#2358)

CHANGELOG.md

@@ -27,6 +27,7 @@ And please only add new entries to the top of this list, right below the `# Unre
 - On macOS, added support for `WindowEvent::ThemeChanged`.
 - **Breaking:** Removed `WindowBuilderExtWindows::with_theme` and `WindowBuilderExtWayland::with_wayland_csd_theme` in favour of `WindowBuilder::with_theme`.
 - **Breaking:** Removed `WindowExtWindows::theme` in favour of `Window::theme`.
+- Enabled `doc_auto_cfg` when generating docs on docs.rs for feature labels.
 
 # 0.27.4
 

Cargo.toml

@@ -32,6 +32,7 @@ targets = [
     # WebAssembly
     "wasm32-unknown-unknown",
 ]
+rustdoc-args = ["--cfg", "docsrs"]
 
 [features]
 default = ["x11", "wayland", "wayland-dlopen", "wayland-csd-adwaita"]

src/lib.rs

@@ -135,6 +135,8 @@
 #![deny(rustdoc::broken_intra_doc_links)]
 #![deny(clippy::all)]
 #![cfg_attr(feature = "cargo-clippy", deny(warnings))]
+// Doc feature labels can be tested locally by running RUSTDOCFLAGS="--cfg=docsrs" cargo +nightly doc
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 #![allow(clippy::missing_safety_doc)]
 
 #[allow(unused_imports)]