fix building under linux

advancedSettings.pro

@@ -59,8 +59,9 @@ win32 {
 INCLUDEPATH += third-party/openvr/headers \
 			third-party/easylogging++
 
-win32:LIBS += -L"$$PWD/third-party/openvr/lib/win64"
+win32:LIBS += -L"$$PWD/third-party/openvr/lib/win64" -luser32 -lole32
 unix:LIBS += -L"$$PWD/third-party/openvr/lib/linux64"
-LIBS += -lopenvr_api -luser32 -lole32
+LIBS += -lopenvr_api
 
-DESTDIR = bin/win64/AdvancedSettings
+win32:DESTDIR = bin/win64/AdvancedSettings
+unix:DESTDIR = bin/linux/AdvancedSettings

src/overlaycontroller.cpp

@@ -28,6 +28,8 @@ namespace advsettings {
 
 std::unique_ptr<OverlayController> OverlayController::singleton;
 
+constexpr const char* OverlayController::applicationVersionString;
+
 QSettings* OverlayController::_appSettings = nullptr;
 
 OverlayController::~OverlayController() {

src/tabcontrollers/ChaperoneTabController.cpp

@@ -1,6 +1,7 @@
 #include "ChaperoneTabController.h"
 #include <QQuickWindow>
 #include "../overlaycontroller.h"
+#include <math.h>
 
 // application namespace
 namespace advsettings {

src/utils/ChaperoneUtils.cpp

@@ -1,6 +1,7 @@
 
 #include "ChaperoneUtils.h"
 #include <iostream>
+#include <math.h>
 
 namespace utils {