i-slint-backend-qt 1.9.1

Qt rendering backend for Slint
Documentation 
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// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0

// cSpell: ignore listviewitem stylemetrics

#[cfg(feature = "enable")]
fn main() {
    println!("cargo:rustc-check-cfg=cfg(no_qt)");

    println!("cargo:rerun-if-env-changed=SLINT_NO_QT");
    if std::env::var("TARGET").map_or(false, |t| t.starts_with("wasm"))
        || std::env::var("SLINT_NO_QT").is_ok()
    {
        println!("cargo:rustc-cfg=no_qt");
        return;
    }
    if std::env::var("DEP_QT_FOUND").unwrap() != "1" {
        println!("cargo:rustc-cfg=no_qt");
        println!(
            "cargo:warning=Could not find a Qt installation. The Qt backend will not be functional. \
            See https://github.com/slint-ui/slint/blob/master/docs/install_qt.md for more info"
        );
        println!("cargo:warning=    {}", std::env::var("DEP_QT_ERROR_MESSAGE").unwrap());
        return;
    }
    let qt_version = std::env::var("DEP_QT_VERSION").unwrap();
    if !qt_version.starts_with("5.15") && !qt_version.starts_with("6.") {
        println!("cargo:rustc-cfg=no_qt");
        println!(
            "cargo:warning=Qt {} is not supported, you need at least Qt 5.15. The Qt backend will not be functional. \
             See https://github.com/slint-ui/slint/blob/master/docs/install_qt.md for more info",
            qt_version
        );
        return;
    }

    let mut config = cpp_build::Config::new();
    for f in std::env::var("DEP_QT_COMPILE_FLAGS").unwrap().split_terminator(';') {
        config.flag(f);
    }
    config.flag_if_supported("-std=c++17");
    config.flag_if_supported("/std:c++17");
    // Workaround QTBUG-123153
    config.flag_if_supported("-Wno-template-id-cdtor");
    config.include(std::env::var("DEP_QT_INCLUDE_PATH").unwrap()).build("lib.rs");

    println!("cargo:rerun-if-changed=lib.rs");
    println!("cargo:rerun-if-changed=qt_accessible.rs");
    println!("cargo:rerun-if-changed=qt_widgets.rs");
    println!("cargo:rerun-if-changed=qt_widgets/button.rs");
    println!("cargo:rerun-if-changed=qt_widgets/checkbox.rs");
    println!("cargo:rerun-if-changed=qt_widgets/combobox.rs");
    println!("cargo:rerun-if-changed=qt_widgets/groupbox.rs");
    println!("cargo:rerun-if-changed=qt_widgets/lineedit.rs");
    println!("cargo:rerun-if-changed=qt_widgets/listviewitem.rs");
    println!("cargo:rerun-if-changed=qt_widgets/scrollview.rs");
    println!("cargo:rerun-if-changed=qt_widgets/slider.rs");
    println!("cargo:rerun-if-changed=qt_widgets/progress_indicator.rs");
    println!("cargo:rerun-if-changed=qt_widgets/spinbox.rs");
    println!("cargo:rerun-if-changed=qt_widgets/stylemetrics.rs");
    println!("cargo:rerun-if-changed=qt_widgets/palette.rs");
    println!("cargo:rerun-if-changed=qt_widgets/tabwidget.rs");
    println!("cargo:rerun-if-changed=qt_widgets/tableheadersection.rs");
    println!("cargo:rerun-if-changed=qt_window.rs");
    println!("cargo:SUPPORTS_NATIVE_STYLE=1");
}

#[cfg(not(feature = "enable"))]
fn main() {
    println!("cargo:rustc-cfg=no_qt");
    println!("cargo:rustc-check-cfg=cfg(no_qt)");
    return;
}