I'm trying to install ROS Indigo on RP2 but when I do the step 2.3 (Building the catkin workspace) as in the tutorial it freezes every time at that point. Is somone know why it happens? http://wiki.ros.org/ROSberryPi/Installing%20ROS%20Indigo%20on%20Raspberry%20Pi

==> Processing catkin package: 'qtguicpp'

==> Building with env: '/opt/ros/indigo/env.sh'

Makefile exists, skipping explicit cmake invocation...

==> make cmakecheckbuildsystem in '/home/pi/roscatkinws/buildisolated/qtguicpp'

==> make -j4 -l4 in '/home/pi/roscatkinws/buildisolated/qtgui_cpp'

[ 37%] Built target qtguicpp [ 40%] Compiling generated code for qtguicpp_sip Python bindings... make[3]: warning: jobserver unavailable: using -j1. Add '+' to parent make rule.

[ 44%] [ 48%] [ 51%] Building CXX object src/qtguicppshiboken/CMakeFiles/qtguicppshiboken.dir/libqtguicppshiboken/qtguicpppluginbridgewrapper.cpp.o Building CXX object src/qtguicppshiboken/CMakeFiles/qtguicppshiboken.dir/libqtguicppshiboken/qtguicpprospluginlibpluginproviderforpluginswrapper.cpp.o Building CXX object src/qtguicppshiboken/CMakeFiles/qtguicppshiboken.dir/libqtguicppshiboken/qtguicpprospluginlibpluginproviderforpluginproviders_wrapper.cpp.o