Port vncserver lib to Qt 5

.qmake.conf

+load(qt_build_config)
+CONFIG += warning_clean
+
+DEFINES += QT_NO_LINKED_LIST
+DEFINES += QT_NO_JAVA_STYLE_ITERATORS
+
+MODULE_VERSION = 5.15.9

qtvncserver.pro

+load(qt_parts)

src/src.pro

+TEMPLATE = subdirs
+SUBDIRS += \
+    vncserver 

src/vncserver/qtvncserverglobal.h

@@ -30,7 +30,20 @@
 #ifndef QTVNCSERVERGLOBAL_H
 #define QTVNCSERVERGLOBAL_H
 
-#include <QtVncServer/qtvncserverexports.h>
+#include <QtCore/qglobal.h>
+
+#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#  include <QtVncServer/qtvncserverexports.h>
+#else
+#  if !defined(Q_VNCSERVERT_EXPORT)
+#    if defined(QT_SHARED)
+#      define Q_VNCSERVER_EXPORT Q_DECL_EXPORT
+#    else
+#      define Q_VNCSERVER_EXPORT
+#    endif
+#  endif
+#endif
+
 #include <QtCore/qloggingcategory.h>
 
 Q_DECLARE_LOGGING_CATEGORY(lcVnc)

src/vncserver/qvncclient.cpp

@@ -112,7 +112,11 @@ QVNCDirtyMap::QVNCDirtyMap(QImage referenceImage)
     bufferStride = bufferWidth * bytesPerPixel;
     const size_t bufferSize = bufferHeight * bufferStride;
     buffer = new uchar[bufferSize];
+#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
     std::memcpy(buffer, referenceImage.constBits(), bufferSize);
+#else
+    memcpy(buffer, referenceImage.constBits(), bufferSize);
+#endif
 
     mapWidth = (bufferWidth + MAP_TILE_SIZE - 1) / MAP_TILE_SIZE;
     mapHeight = (bufferHeight + MAP_TILE_SIZE - 1) / MAP_TILE_SIZE;
@@ -1300,7 +1304,11 @@ void QVncClient::keyEvent()
             emit keyEventReceived(ev.down ? QEvent::KeyPress : QEvent::KeyRelease,
                                   Qt::Key(ev.keycode),
                                   m_keymod,
+#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
                                   QChar::fromUcs2(ev.unicode));
+#else
+                                  QChar(ev.unicode));
+#endif
         }
         if (ev.keycode == Qt::Key_Shift)
             m_keymod = ev.down ? m_keymod | Qt::ShiftModifier :

src/vncserver/vncserver.pro

+TARGET = QtVncServer
+QMAKE_USE_PRIVATE += zlib
+
+QT = core-private gui-private network-private 
+HEADERS += \
+    $$PWD/qrfbprotocol_p.h \
+    $$PWD/qtvncserverglobal.h \
+    $$PWD/qvncclient_p.h \
+    $$PWD/qvncclientcursor_p.h \
+    $$PWD/qvncserver.h
+
+SOURCES += \
+    $$PWD/qrfbprotocol.cpp \
+    $$PWD/qtvncserverglobal.cpp \
+    $$PWD/qvncclient.cpp \
+    $$PWD/qvncclientcursor.cpp \
+    $$PWD/qvncserver.cpp
+
+load(qt_module)
+CONFIG -= create_cmake