That's strange, these are from the soqt package, normally... Check that you have libsoqt4-20 and libsoqt4-dev installed?
Ok, just now installed the libqt4-opengl-dev package and did indeed
get further along. Now I'm stuck at this point:
Scanning dependencies of target FreeCADGuiPy
[ 38%] Building CXX object src/Main/CMakeFiles/FreeCADGuiPy.dir/FreeCADGuiPy.cpp.o
Linking CXX shared library ../../lib/FreeCADGui.so
[ 38%] Built target FreeCADGuiPy
Scanning dependencies of target FreeCADMain
[ 38%] Building CXX object src/Main/CMakeFiles/FreeCADMain.dir/MainGui.cpp.o
Linking CXX executable ../../bin/FreeCAD
../../lib/libFreeCADGui.so: undefined reference to `SoQtViewer::setStereoOffset(float)'
../../lib/libFreeCADGui.so: undefined reference to `SoQtRenderArea::initGraphic()'
../../lib/libFreeCADGui.so: undefined reference to `SoQtGLWidget::getGLWidget() const'
collect2: error: ld returned 1 exit status
make: *** [bin/FreeCAD] Error 1
make: *** [src/Main/CMakeFiles/FreeCADMain.dir/all] Error 2
make: *** [all] Error 2
make 961.23s user 57.58s system 92% cpu 18:19.26 total