Error to compile qtlocalpeer

[simonbcn]

Gentoo 64 bits
QMake version 3.0
Using Qt version 5.5.1 in /usr/lib64

....
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DNATIVE_ASEMAN_NOTIFICATION -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I../../Berry -I. -isystem /usr/include/qt5 -isystem /usr/include/qt5/QtWidgets -isystem /usr/include/qt5/QtQuick -isystem /usr/include/qt5/QtGui -isystem /usr/include/qt5/QtQml -isystem /usr/include/qt5/QtNetwork -isystem /usr/include/qt5/QtCore -I. -I/usr/lib64/qt5/mkspecs/linux-g++ -o qtlocalpeer.o ../asemantools/qtsingleapplication/qtlocalpeer.cpp
../asemantools/qtsingleapplication/qtlocalpeer.cpp: In member function 'bool QtLocalPeer::sendMessage(const QString&, int)':
../asemantools/qtsingleapplication/qtlocalpeer.cpp:164:19: error: variable 'QDataStream ds' has initializer but incomplete type
     QDataStream ds(&socket);
                   ^
../asemantools/qtsingleapplication/qtlocalpeer.cpp: In member function 'void QtLocalPeer::receiveConnection()':
../asemantools/qtsingleapplication/qtlocalpeer.cpp:181:26: error: variable 'QDataStream ds' has initializer but incomplete type
     QDataStream ds(socket);
                          ^
Makefile:1319: recipe for target 'qtlocalpeer.o' failed
make: *** [qtlocalpeer.o] Error 1

[dominikfuchs]

Solution is to add #include into qtlocalpeer.cpp