compiler-linker
---------------

* The linker effectively used for the link step is now documented with the
  :variable:`CMAKE_<LANG>_COMPILER_LINKER`,
  :variable:`CMAKE_<LANG>_COMPILER_LINKER_ID`,
  :variable:`CMAKE_<LANG>_COMPILER_LINKER_VERSION` and
  :variable:`CMAKE_<LANG>_COMPILER_LINKER_FRONTEND_VARIANT` variables.