use std::process::Command;
fn qmake_query(var: &str) -> Option<String> {
let qmake = std::env::var_os("QMAKE").unwrap_or("qmake".into());
Command::new(qmake).env("QT_SELECT", "qt5").args(&["-query", var]).output().ok().map(|output| {
String::from_utf8(output.stdout).expect("UTF-8 conversion from ouytput of qmake failed")
})
}
fn main() {
if qmake_query("QT_VERSION").is_none() {
println!("cargo:rustc-cfg=no_qt");
println!(
"cargo:warning=Could not find a Qt installation. The Qt backend will not be functional"
);
return;
}
let qt_include_path = qmake_query("QT_INSTALL_HEADERS").unwrap();
let qt_library_path = qmake_query("QT_INSTALL_LIBS").unwrap();
let mut config = cpp_build::Config::new();
config.flag_if_supported("-std=c++17");
config.flag_if_supported("/std:c++17");
if cfg!(target_os = "macos") {
config.flag("-F");
config.flag(qt_library_path.trim());
}
config.include(qt_include_path.trim()).build("lib.rs");
let macos_lib_search = if cfg!(target_os = "macos") { "=framework" } else { "" };
let macos_lib_framework = if cfg!(target_os = "macos") { "" } else { "5" };
println!("cargo:rustc-link-search{}={}", macos_lib_search, qt_library_path.trim());
println!("cargo:rustc-link-lib{}=Qt{}Widgets", macos_lib_search, macos_lib_framework);
println!("cargo:rustc-link-lib{}=Qt{}Gui", macos_lib_search, macos_lib_framework);
println!("cargo:rustc-link-lib{}=Qt{}Core", macos_lib_search, macos_lib_framework);
}