How was it compiling without this include?
How was it compiling without this include?

johnkit/vtk-dev,johnkit/vtk-dev,candy7393/VTK,berendkleinhaneveld/VTK,candy7393/VTK,berendkleinhaneveld/VTK,biddisco/VTK,aashish24/VTK-old,SimVascular/VTK,sankhesh/VTK,demarle/VTK,sgh/vtk,SimVascular/VTK,biddisco/VTK,Wuteyan/VTK,spthaolt/VTK,demarle/VTK,sgh/vtk,johnkit/vtk-dev,biddisco/VTK,gram526/VTK,daviddoria/PointGraphsPhase1,mspark93/VTK,Wuteyan/VTK,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,berendkleinhaneveld/VTK,msmolens/VTK,spthaolt/VTK,keithroe/vtkoptix,hendradarwin/VTK,collects/VTK,ashray/VTK-EVM,cjh1/VTK,cjh1/VTK,keithroe/vtkoptix,SimVascular/VTK,spthaolt/VTK,jeffbaumes/jeffbaumes-vtk,msmolens/VTK,ashray/VTK-EVM,sumedhasingla/VTK,aashish24/VTK-old,naucoin/VTKSlicerWidgets,keithroe/vtkoptix,jeffbaumes/jeffbaumes-vtk,candy7393/VTK,daviddoria/PointGraphsPhase1,sankhesh/VTK,arnaudgelas/VTK,naucoin/VTKSlicerWidgets,daviddoria/PointGraphsPhase1,jmerkow/VTK,cjh1/VTK,aashish24/VTK-old,gram526/VTK,collects/VTK,keithroe/vtkoptix,cjh1/VTK,jmerkow/VTK,sankhesh/VTK,biddisco/VTK,keithroe/vtkoptix,spthaolt/VTK,jeffbaumes/jeffbaumes-vtk,naucoin/VTKSlicerWidgets,mspark93/VTK,sankhesh/VTK,keithroe/vtkoptix,SimVascular/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,hendradarwin/VTK,johnkit/vtk-dev,collects/VTK,keithroe/vtkoptix,ashray/VTK-EVM,keithroe/vtkoptix,Wuteyan/VTK,candy7393/VTK,cjh1/VTK,mspark93/VTK,gram526/VTK,berendkleinhaneveld/VTK,daviddoria/PointGraphsPhase1,jmerkow/VTK,jeffbaumes/jeffbaumes-vtk,arnaudgelas/VTK,demarle/VTK,ashray/VTK-EVM,mspark93/VTK,arnaudgelas/VTK,biddisco/VTK,hendradarwin/VTK,sumedhasingla/VTK,msmolens/VTK,ashray/VTK-EVM,arnaudgelas/VTK,ashray/VTK-EVM,demarle/VTK,sumedhasingla/VTK,berendkleinhaneveld/VTK,candy7393/VTK,demarle/VTK,daviddoria/PointGraphsPhase1,spthaolt/VTK,jmerkow/VTK,hendradarwin/VTK,biddisco/VTK,gram526/VTK,hendradarwin/VTK,Wuteyan/VTK,sgh/vtk,candy7393/VTK,jmerkow/VTK,msmolens/VTK,aashish24/VTK-old,sankhesh/VTK,arnaudgelas/VTK,hendradarwin/VTK,SimVascular/VTK,cjh1/VTK,SimVascular/VTK,naucoin/VTKSlicerWidgets,gram526/VTK,daviddoria/PointGraphsPhase1,mspark93/VTK,msmolens/VTK,spthaolt/VTK,gram526/VTK,sankhesh/VTK,sumedhasingla/VTK,sumedhasingla/VTK,berendkleinhaneveld/VTK,msmolens/VTK,gram526/VTK,collects/VTK,collects/VTK,mspark93/VTK,arnaudgelas/VTK,naucoin/VTKSlicerWidgets,gram526/VTK,demarle/VTK,aashish24/VTK-old,sgh/vtk,spthaolt/VTK,jmerkow/VTK,msmolens/VTK,candy7393/VTK,demarle/VTK,Wuteyan/VTK,berendkleinhaneveld/VTK,aashish24/VTK-old,johnkit/vtk-dev,mspark93/VTK,biddisco/VTK,sgh/vtk,sankhesh/VTK,msmolens/VTK,Wuteyan/VTK,ashray/VTK-EVM,sumedhasingla/VTK,hendradarwin/VTK,mspark93/VTK,sankhesh/VTK,jmerkow/VTK,collects/VTK,ashray/VTK-EVM,SimVascular/VTK,sgh/vtk,candy7393/VTK,johnkit/vtk-dev,johnkit/vtk-dev,SimVascular/VTK,sumedhasingla/VTK,Wuteyan/VTK,demarle/VTK,jeffbaumes/jeffbaumes-vtk