Hello !

I'm using ocaml 3.11 and 3.12 and I'm writting some C code
that use caml_enter/leave_blocking_section. I'd like to know if
there is a standard way to check for Ocaml version with the C preprocessor
in order to switch to caml_release/acquire_runtime_system if version is
>= 3.12 ?

I grepped for VERSION in all the caml/*.h files without success.
How am I supposed to do ?