Add kwin full source tree, greeter login, zsh, pcid service, and build system improvements

local/recipes/kde/kwin/src/utils/kernel.h

@@ -0,0 +1,28 @@
+/*
+    KWin - the KDE window manager
+    This file is part of the KDE project.
+
+    SPDX-FileCopyrightText: 2023 Xaver Hugl <xaver.hugl@gmail.com>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+#pragma once
+#include "utils/version.h"
+
+#include <sys/utsname.h>
+
+namespace KWin
+{
+
+inline static Version linuxKernelVersion()
+{
+    struct utsname name;
+    uname(&name);
+
+    if (qstrcmp(name.sysname, "Linux") == 0) {
+        return Version::parseString(name.release);
+    }
+    return Version(0, 0, 0);
+}
+
+}