Make it possible to disable Qt type pack handlers at build time

usable with either
  qmake DEFINES+=MSGPACK_NO_PACKTYPES
or
  DEFINES += MSGPACK_STATIC MSGPACK_NO_PACKTYPES
  include(path/to/qmsgpack/qmsgpack.pri)

src/msgpack.cpp

@@ -3,13 +3,16 @@
 #include "msgpack.h"
 #include "private/unpack_p.h"
 #include "private/pack_p.h"
-#include "private/qt_types_p.h"
 
 #include <QVector>
 
+#ifndef MSGPACK_NO_PACKTYPES
+#include "private/qt_types_p.h"
+
 #ifdef QT_LOCATION_LIB
 #include <QGeoCoordinate>
 #endif
+#endif // MSGPACK_NO_PACKTYPES
 
 QVariant MsgPack::unpack(const QByteArray &data)
 {
@@ -51,6 +54,7 @@ qint8 MsgPack::msgpackType(int qType)
 
 bool MsgPack::registerType(QMetaType::Type qType, quint8 msgpackType)
 {
+#ifndef MSGPACK_NO_PACKTYPES
     switch (qType) {
 #ifdef QT_GUI_LIB
     case QMetaType::QColor:
@@ -92,6 +96,9 @@ bool MsgPack::registerType(QMetaType::Type qType, quint8 msgpackType)
 #endif // QT_LOCATION_LIB
         break;
     }
+#else
+    Q_UNUSED(msgpackType)
+#endif // MSGPACK_NO_PACKTYPES
 
     qWarning("qmsgpack was built without metatype %d support.", int(qType));
     qWarning("Use MsgPack::registerPacker() and MsgPack::registerUnpacker() to register metatype %d manually.", int(qType));

src/src.pro

@@ -18,12 +18,14 @@ HEADERS_INSTALL = \
     msgpack_export.h \
     msgpackstream.h \
 
-STREAM_HEADERS_INSTALL = \
-    stream/geometry.h \
-    stream/time.h
+!contains(DEFINES, MSGPACK_NO_PACKTYPES) {
+    STREAM_HEADERS_INSTALL = \
+        stream/geometry.h \
+        stream/time.h
 
-qtHaveModule(location) {
-    STREAM_HEADERS_INSTALL += stream/location.h
+    qtHaveModule(location) {
+        STREAM_HEADERS_INSTALL += stream/location.h
+    }
 }
 
 unix {