project( itkSubdivisionQuadEdgeMeshFilter )
itk_module_impl()

project( itkSubdivisionQuadEdgeMeshFilter )

if(NOT ITK_SOURCE_DIR)
  find_package(ITK REQUIRED)
  list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
  include(ITKModuleExternal)
else()
  itk_module_impl()
endif()

Enable building module outside ITK.
ENH: Enable building module outside ITK.

Modify the `CMakeLists.txt` file to enable building the module outside
ITK.
