target_sources(
  ActsCore
  PRIVATE
    AccumulatedMaterialSlab.cpp
    AccumulatedSurfaceMaterial.cpp
    AccumulatedVolumeMaterial.cpp
    AverageMaterials.cpp
    BinnedSurfaceMaterial.cpp
    HomogeneousSurfaceMaterial.cpp
    HomogeneousVolumeMaterial.cpp
    Interactions.cpp
    Material.cpp
    MaterialGridHelper.cpp
    MaterialMapUtils.cpp
    MaterialSlab.cpp
    ProtoVolumeMaterial.cpp
    SurfaceMaterialMapper.cpp
    VolumeMaterialMapper.cpp
)
