ffmpeg-the-third/build.rs

use std::env;

fn main() {
	for (name, _value) in env::vars() {
		if name.starts_with("DEP_FFMPEG_") {
			println!(r#"cargo:rustc-cfg=feature="{}""#,
				name["DEP_FFMPEG_".len() .. name.len()].to_lowercase());
		}
	}
}