Cargo Features

c_bridge has no features set by default.

[dependencies]
c_bridge = { version = "0.6.0", features = ["test_build"] }
test_build = cc

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.

cc build test_build?