Cargo Features

faiss-sys has no features set by default.

[dependencies]
faiss-sys = { version = "0.6.2", features = ["gpu", "static"] }
gpu
static = cmake

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.

cmake build static?