cmake HAVE_LAPACKE_DGESV examples

OSGeo/grass cmake/find_scripts/FindLAPACKE.cmake :101 

check_symbol_exists(LAPACKE_dgesv "lapacke.h" HAVE_LAPACKE_DGESV)

OSGeo/grass cmake/find_scripts/FindLAPACKE.cmake :107 

find_package_handle_standard_args(
  LAPACKE
  REQUIRED_VARS LAPACKE_FOUND LAPACKE_LIBRARIES LAPACKE_INCLUDEDIR
                HAVE_LAPACKE_DGESV
  VERSION_VAR LAPACKE_VERSION)