Cargo Features

arcdps-imgui-sys has no features set by default.

[dependencies]
arcdps-imgui-sys = { version = "0.8.0", features = ["wasm", "freetype"] }
wasm
freetype = pkg-config

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.

pkg-config build freetype?