if(NOT STATIC_LINK)
  return()
endif()

if(NOT CMAKE_CROSSCOMPILING)
  add_compile_options(-static -flto)
else()
  add_compile_options(-static)
endif()

if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  link_libraries( -flto)
  return()
endif()

if(NOT CMAKE_CROSSCOMPILING)
  set(CMAKE_AR "gcc-ar")
  set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> qcs <TARGET> <LINK_FLAGS> <OBJECTS>")
  set(CMAKE_C_ARCHIVE_FINISH "true")
  set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> qcs <TARGET> <LINK_FLAGS> <OBJECTS>")
  set(CMAKE_CXX_ARCHIVE_FINISH "true")
  link_libraries( -flto )
endif()