Cargo Features

gcdevproxy has no features set by default.

[dependencies]
gcdevproxy = { version = "0.3.0", features = ["c-api"] }
c-api = libc

Enables std of log

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.

libc c-api?