kwiver-depends-OpenCV.cmake

# Optionally find and configure OpenCV dependency

option( KWIVER_ENABLE_OPENCV
  "Enable OpenCV dependent code and plugins (Arrows)"
  ${fletch_ENABLED_OpenCV}
  )

set( USE_OPENCV False )
if( KWIVER_ENABLE_OPENCV )
  find_package( OpenCV REQUIRED )
  include_directories(SYSTEM ${OpenCV_INCLUDE_DIRS})

  if( OpenCV_VERSION VERSION_GREATER_EQUAL "3.0" )
    set( USE_OPENCV True )
    if( OpenCV_VERSION VERSION_GREATER_EQUAL "4.0" )
      message( STATUS "Found OPENCV 4.x" )
      set( KWIVER_OPENCV_VERSION_MAJOR 4 )
    else()
      message( STATUS "Found OPENCV 3.x" )
      set( KWIVER_OPENCV_VERSION_MAJOR 3 )
    endif()

  else()
    message( FATAL_ERROR "OpenCV version must be at least 3.0" )
  endif()
endif( KWIVER_ENABLE_OPENCV )

  ##