if(NOT IMITSRK_IS_EXTERNAL_PROJECT)
  set(IMITSRK_PREFIX "" CACHE PATH "The path to the prefix of an libimitsrk installation")
  set(IMITSRK_INCLUDE_DIR "" CACHE PATH "The path to the headers of an libimitsrk installation")
  set(IMITSRK_LIBRARY_DIR "" CACHE PATH "The path to the library of an libimitsrk installation")

  set(_search_paths "")
  if(IMITSRK_INCLUDE_DIR AND EXISTS ${IMITSRK_INCLUDE_DIR})
    list(APPEND _search_paths ${IMITSRK_INCLUDE_DIR})
  endif()
  if(IMITSRK_PREFIX AND EXISTS ${IMITSRK_PREFIX})
    list(APPEND _search_paths "${IMITSRK_PREFIX}/include")
  endif()
  find_path(
    IMITSRK_INCLUDE_DIRS
    NAMES imitsrk/imitator.hpp
    PATHS ${_search_paths})

  set(_search_paths "")
  if(IMITSRK_LIBRARY_DIR AND EXISTS ${IMITSRK_LIBRARY_DIR})
    list(APPEND _search_paths ${IMITSRK_LIBRARY_DIR})
  endif()
  if(IMITSRK_PREFIX AND EXISTS ${IMITSRK_PREFIX})
    list(APPEND _search_paths "${IMITSRK_PREFIX}/lib")
  endif()
  find_library(
    IMITSRK_LIBRARIES
    NAMES imitsrk
    PATHS ${_search_paths})
  unset(_search_paths)

  if(IMITSRK_INCLUDE_DIRS AND IMITSRK_LIBRARIES)
    set(IMITSRK_FOUND TRUE)
  endif()

  if(IMITSRK_FOUND)
    if(NOT IMITSRK_FIND_QUIETLY)
      message(STATUS "Found libimitsrk")
    endif()
    set(HAVE_IMITSRK 1)
  elseif(IMITSRK_FOUND)
    if(IMITSRK_FIND_REQUIRED)
      message(FATAL_ERROR "Could not find libimitsrk")
    endif()
  endif()
endif()