if(NOT MYXLIB_IS_EXTERNAL_PROJECT)
  set(MYXLIB_PREFIX "" CACHE PATH "The path to the prefix of an myxlib installation")
  set(MYXLIB_INCLUDE_DIR "" CACHE PATH "The path to the headers of an myxlib installation")
  set(MYXLIB_LIBRARY_DIR "" CACHE PATH "The path to the library of an myxlib installation")

  set(_search_paths "")
  if(EXISTS MYXLIB_INCLUDE_DIR)
    list(APPEND _search_paths ${MYXLIB_INCLUDE_DIR})
  endif()
  if(EXISTS MYXLIB_PREFIX)
    list(APPEND _search_paths ${MYXLIB_PREFIX}/include)
  endif()
  find_path(
    MYXLIB_INCLUDE_DIRS
    NAMES myx/core/config.hpp
    PATHS ${_search_paths})

  set(_search_paths "")
  if(EXISTS MYXLIB_LIBRARY_DIR)
    list(APPEND _search_paths ${MYXLIB_LIBRARY_DIR})
  endif()
  if(EXISTS MYXLIB_PREFIX)
    list(APPEND _search_paths ${MYXLIB_PREFIX}/lib)
  endif()
  find_library(
    MYXLIB_QT_LIBRARIES
    NAMES myx-qt
    PATHS ${_search_paths})
  find_library(
    MYXLIB_FILESYSTEM_LIBRARIES
    NAMES myx-filesystem
    PATHS ${_search_paths})
  unset(_search_paths)
  set(MYXLIB_LIBRARIES ${MYXLIB_QT_LIBRARIES} ${MYXLIB_FILESYSTEM_LIBRARIES})

  if(MYXLIB_INCLUDE_DIRS AND MYXLIB_LIBRARIES)
    set(MYXLIB_FOUND TRUE)
  endif()

  if(MYXLIB_FOUND)
    if(NOT MYXLIB_FIND_QUIETLY)
      message(STATUS "Found myxlib")
    endif()
    set(HAVE_MYXLIB 1)
  elseif(MYXLIB_FOUND)
    if(MYXLIB_FIND_REQUIRED)
      message(FATAL_ERROR "Could not find myxlib")
    endif()
  endif()
endif()