Cargo Features

winfsp-sys has no features set by default.

[dependencies]
winfsp-sys = { version = "0.2.2+winfsp-2.0", features = ["system", "docsrs"] }
system = registry
docsrs

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

registry build system?