anchor.diff:      cd .. && \
       mkdir build && \
       cd build && \
  -    cmake -CMAKE_BUILD_TYPE=Release \
  +    cmake -DCMAKE_BUILD_TYPE=Release \
             -DUSE_VTK=ON \
             -DUSE_SYSTEM_VTK=ON \
             -DVTK_DIR=$SOFT/vtk/build \
  
positive.code:     git clone $VTK_GIT -b $VTK_VERSION VTK && \
      mkdir build && \
      cd build && \
      cmake -CMAKE_BUILD_TYPE=Release \
            -DPYTHON_EXECUTABLE=/usr/bin/python2.7 \
            -DPYTHON_INCLUDE_DIR=/usr/include/python2.7 \
            -DPYTHON_INCLUDE_DIR=/usr/include/x86_64-linux-gnu/python2.7m \
  
negative.code:     git clone $PETPVC_GIT -b $PETPVC_VERSION && \
      mkdir build && \
      cd build && \
      cmake -DCMAKE_BUILD_TYPE=Release \
            -DITK_DIR=$SOFT/ants/build/ITKv4-build \
            ../PETPVC && \
      make -j $N_CPUS
  