tce-load -i cmake qt-5.x-dev pulseaudio-dev phonon-dev gst-plugins-good-dev gst-plugins-bad-dev gst-plugins-ugly-dev 

cd phonon-backend-gstreamer-4.8.2

patch -Np1 -i ../phonon-backend-gstreamer-4.8.2-compatibility-1.patch

mkdir build
cd    build

cmake -DCMAKE_C_FLAGS="-mtune=generic -Os -pipe" -DCMAKE_CXX_FLAGS="-mtune=generic -Os -pipe" -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_LIBDIR=lib -DPHONON_BUILD_PHONON4QT5=ON -D__KDE_HAVE_GCC_VISIBILITY=NO -Wno-dev ..

make
sudo make install