set(S2D
    Section2D/Section2D.cpp
    Section2D/Bar2D.cpp
    Section2D/Box2D.cpp
    Section2D/Circle2D.cpp
    Section2D/CircularHollow2D.cpp
    Section2D/HSection2D.cpp
    Section2D/ISection2D.cpp
    Section2D/TSection2D.cpp
    Section2D/Rectangle2D.cpp
    Section2D/Fibre2D.cpp
    )