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#[cfg(not(docsrs))]
use std::io;
#[cfg(not(docsrs))]
use std::io::prelude::*;
#[cfg(not(docsrs))]
use std::process;
#[cfg(docsrs)]
fn main() {} // prevent linking libraries to avoid documentation failure
#[cfg(not(docsrs))]
fn main() {
if let Err(s) = system_deps::Config::new().probe() {
let _ = writeln!(io::stderr(), "{s}");
process::exit(1);
}
// It's safe to assume we can call this because we found the library OK
// in find()
check_features();
}
#[cfg(not(docsrs))]
fn check_features() {
const PKG_CONFIG_PACKAGE: &str = "gdk-3.0";
// The pkg-config file defines a `targets` variable listing the
// various backends that gdk was compiled for.
// We extract that and create gdk_backend="x11" and the like
// as configuration variables.
// In addition we publish this as a variable which cargo will
// provide to immediate dependents of this crate as an environment
// variable for their `build.rs` runs called DEP_GDK_BACKENDS
// For reference, the backend set at time of writing consists of:
// x11 win32 quartz broadway wayland
if let Ok(targets) = pkg_config::get_variable(PKG_CONFIG_PACKAGE, "targets") {
println!("cargo:backends={targets}");
for target in targets.split_whitespace() {
println!("cargo:rustc-cfg=gdk_backend=\"{target}\"");
}
}
}