+%bcond_without ocaml_opt # skip building native optimized binaries (bytecode is always built)
+
+# not yet available on x32 (ocaml 4.02.1), remove when upstream will support it
+%ifnarch %{ix86} %{x8664} arm aarch64 ppc sparc sparcv9
+%undefine with_ocaml_opt
+%endif