Cargo Features

rust_c has no features set by default.

[dependencies]
rust_c = { version = "0.1.1", features = ["build", "macro"] }
build = gcc, syntex_syntax
macro

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.

gcc build?
syntex_syntax build?

Enables syntex_syntax ^0.42