Gold linker, CCache, Stats, LGTM

- Increases linker performance under Linux builds by using Gold linker, if available
- ccache is used if available
- removed statistic class (Stats.cpp) from project due to the missing result (sorry @Brindosch)
- add LGTM bandges for code analysis overview

Signed-off-by: Paulchen-Panther <Paulchen-Panter@protonmail.com>

src/hyperion-framebuffer/FramebufferWrapper.h

@@ -1,3 +1,4 @@
+#pragma once
 
 // QT includes
 #include <QTimer>

src/hyperion-v4l2/ScreenshotHandler.h

@@ -1,3 +1,5 @@
+#pragma once
+
 // Qt includes
 #include <QObject>
 #include <QRectF>

src/hyperion-x11/X11Wrapper.h

@@ -1,3 +1,4 @@
+#pragma once
 
 // QT includes
 #include <QTimer>

src/hyperiond/hyperiond.cpp

@@ -22,7 +22,6 @@
 #include <jsonserver/JsonServer.h>
 #include <udplistener/UDPListener.h>
 #include <webserver/WebServer.h>
-#include <utils/Stats.h>
 #include <HyperionConfig.h> // Required to determine the cmake options
 #include "hyperiond.h"
 
@@ -65,7 +64,6 @@ HyperionDaemon::HyperionDaemon(QString configFile, const QString rootPath, QObje
 	, _osxGrabber(nullptr)
 	, _qtGrabber(nullptr)
 	, _hyperion(nullptr)
-	, _stats(nullptr)
 	, _ssdp(nullptr)
 	, _currVideoMode(VIDEO_2D)
 {
@@ -170,7 +168,6 @@ void HyperionDaemon::freeObjects()
 	delete _osxGrabber;
 	delete _qtGrabber;
 	delete _v4l2Grabber;
-	delete _stats;
 
 	_v4l2Grabber           = nullptr;
 	_bonjourBrowserWrapper = nullptr;
@@ -185,14 +182,10 @@ void HyperionDaemon::freeObjects()
 	_webserver             = nullptr;
 	_jsonServer            = nullptr;
 	_udpListener           = nullptr;
-	_stats                 = nullptr;
 }
 
 void HyperionDaemon::startNetworkServices()
 {
-	// Create Stats
-	_stats = new Stats(_settingsManager->getSettings());
-
 	// Create Json server
 	_jsonServer = new JsonServer(getSetting(settings::JSONSERVER));
 	connect(this, &HyperionDaemon::settingsChanged, _jsonServer, &JsonServer::handleSettingsUpdate);
@@ -243,9 +236,9 @@ void HyperionDaemon::startNetworkServices()
 	ssdpThread->start();
 }
 
-void HyperionDaemon::handleSettingsUpdate(const settings::type& type, const QJsonDocument& config)
+void HyperionDaemon::handleSettingsUpdate(const settings::type& settingsType, const QJsonDocument& config)
 {
-	if(type == settings::LOGGER)
+	if(settingsType == settings::LOGGER)
 	{
 		const QJsonObject & logConfig = config.object();
 
@@ -256,7 +249,7 @@ void HyperionDaemon::handleSettingsUpdate(const settings::type& type, const QJso
 		else if (level == "debug")   Logger::setLogLevel(Logger::DEBUG);
 	}
 
-	if(type == settings::SYSTEMCAPTURE)
+	if(settingsType == settings::SYSTEMCAPTURE)
 	{
 		const QJsonObject & grabberConfig = config.object();
 
@@ -387,7 +380,7 @@ void HyperionDaemon::handleSettingsUpdate(const settings::type& type, const QJso
 			_prevType = type;
 		}
 	}
-	else if(type == settings::V4L2)
+	else if(settingsType == settings::V4L2)
 	{
 
 #ifdef ENABLE_V4L2

src/hyperiond/hyperiond.h

@@ -56,7 +56,6 @@ class Hyperion;
 class SysTray;
 class JsonServer;
 class UDPListener;
-class Stats;
 class BonjourBrowserWrapper;
 class WebServer;
 class SettingsManager;
@@ -145,7 +144,6 @@ private:
 	OsxWrapper*                _osxGrabber;
 	QtWrapper*                 _qtGrabber;
 	Hyperion*                  _hyperion;
-	Stats*                     _stats;
 	SSDPHandler*               _ssdp;
 	FlatBufferServer*          _flatBufferServer;
 	ProtoServer*               _protoServer;