Build docs.rs documentation with features enabled

The current documentation build in docs.rs does not include
non-default crate features (at the moment just "bzimage"), which
might lead to users of the crate not being aware of their existence.

Signed-off-by: Carlos López <carlos.lopez@suse.com>

CHANGELOG.md

@@ -1,3 +1,9 @@
+# Upcoming version
+
+## Changed
+
+- Added all features to the generated docs.rs documentation.
+
 # [v0.10.0]
 
 ## Changed

Cargo.toml

@@ -15,6 +15,10 @@ homepage = "https://github.com/rust-vmm/linux-loader"
 readme = "README.md"
 autobenches = false
 
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
 [features]
 default = ["elf", "pe"]
 bzimage = []

src/lib.rs

@@ -8,6 +8,7 @@
 // SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
 
 #![deny(missing_docs)]
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 
 //! A Linux kernel image loading crate.
 //!