Now doing all gephex development in https://github.com/lucasw/gephex, that supersedes everything below.
git clone https://github.com/ChristianFrisson/gephex.git
cd gephex
./bootstrap.sh
cd ..
mkdir
../gephex/configure --prefix=$HOME/other/install --with-qt-libdir=/usr/share/qt4/lib --with-qt-bindir=/usr/share/qt4/bin --with-qt-incdir=/usr/share/qt4/include