+AC_ARG_WITH(clang-default-openmp-runtime,
+ AS_HELP_STRING([--with-clang-default-openmp-runtime],
+ [The default OpenMP runtime for Clang.]),,
+ withval="")
+AC_DEFINE_UNQUOTED(CLANG_DEFAULT_OPENMP_RUNTIME,"$withval",
+ [Default OpenMP runtime used by -fopenmp.])
+