We don't want to export and import QHttp headers since we link against them.

external/qhttp/src/qhttpfwd.hpp

@@ -168,7 +168,7 @@ class QHttpResponsePrivate;
 ///////////////////////////////////////////////////////////////////////////////
 } // namespace client
 ///////////////////////////////////////////////////////////////////////////////
-#ifdef Q_OS_WIN
+#if 0
 #   if defined(QHTTP_EXPORT)
 #       define QHTTP_API __declspec(dllexport)
 #   else