Cargo Features

freetype = { version = "0.7.1", default-features = false, features = ["freetype-sys"] }
default = freetype-sys

The freetype-sys feature is set by default whenever freetype is added without default-features = false somewhere in the dependency tree.

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.

freetype-sys default

Enables freetype-sys ^0.19.0