fn main() {
#[cfg(target_os = "linux")] // this is the *current* os, not the target triple
{
// Per https://kazlauskas.me/entries/writing-proper-buildrs-scripts.html
if std::env::var("CARGO_CFG_TARGET_OS").unwrap() == "linux" {
println!("cargo:rustc-link-lib=GLX");
}
}
}