CMake notes

Analysis of ITK use file

There are four components to the ITK use file methodology

1. Application CMakeLists.txt: This file does FIND_PACKAGE(ITK) and includes ITK_USE_FILE
2. FindITK.cmake: Loads ITK_DIR/ITKconfig.cmake and sets ITK_USE_FILE to UseITK.cmake
3. ITKconfig.cmake: Created at ITK build time
4. UseITK.cmake: Created at ITK build time

For RTK, I think we can get by with a simpler strategy

1. Application CMakeLists.txt: This file does FIND_PACKAGE(RTK)
2. FindRTK.cmake: Loads RTK_DIR/RTKconfig.cmake
3. RTKconfig.cmake: Created at RTK build time