[vtkusers] VTK under gentoo, cmake

[Yoan BLANC]

I've solved this kind of bug :

http://bugs.gentoo.org/show_bug.cgi?id=103343#c6

by adding these at line 16 :

-I/home/yoan/soft/VTK/Utilities/freetype 
-I/home/yoan/soft/VTK/Utilities/freetype/include 
-I/home/yoan/soft/VTK/Utilities/ftgl  
-I/home/yoan/soft/VTK/Utilities/ftgl/src

into these files :

Rendering/vtkRendering.dir/vtkFreeTypeFontCache.o.build.make
Rendering/vtkRendering.dir/vtkOpenGLFreetypeTextMapper.o.build.make

But they are generated by CMake, by question is how can I modify 
Rendering/CMakeLists.txt to append these includes ?

Cheers

Yoan