OCaml and static linking (was old thread: Re: [Fedora-packaging] Issues with Ocaml and Static Linking)

Richard W.M. Jones rjones at redhat.com
Mon May 21 15:54:49 UTC 2007

David Woodhouse wrote:
> On Mon, 2007-05-21 at 12:00 +0100, Richard W.M. Jones wrote:
>> Now, a bit of background first.  When OCaml builds a module, it takes a 
>> MD5 hash over the interface and some of the internals.  It also stores 
>> in the module the MD5 hashes of any modules that it depends upon.  At 
>> link time the MD5 hashes are compared, and the link is only allowed to 
>> proceed if they match.
> Hm. Can we use this to make dynamic linking work safely too?

If you mean Dynlink (the bytecode-only dynamic linker), then that uses 
the same hashing scheme and has the same requirements (matching hashes, 
matching compiler).  So yes.


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