Although in practices the arches that lack a native OCaml compiler don't matter.
In RHEL we ship OCaml natively for everything except S/390 and AArch64. AArch64 will be important, but since hardware doesn't exist in a form you can buy for servers, we're happy to wait for upstream to implement this. We'll probably help them out with hardware too.
Xavier Leroy committed experimental native AArch64 support to OCaml trunk over the summer. I'm planning to add it to the OPAM package testing pool as soon as I get my hands on some Calxeda (or other) hardware.
Comments
It is not available on all arches though.
Although in practices the arches that lack a native OCaml compiler don't matter.
In RHEL we ship OCaml natively for everything except S/390 and AArch64. AArch64 will be important, but since hardware doesn't exist in a form you can buy for servers, we're happy to wait for upstream to implement this. We'll probably help them out with hardware too.
Edit: We maintain our own PPC64 backend.
Xavier Leroy committed experimental native AArch64 support to OCaml trunk over the summer. I'm planning to add it to the OPAM package testing pool as soon as I get my hands on some Calxeda (or other) hardware.
https://github.com/ocaml/ocaml/tree/trunk/asmcomp/arm64
We actively use/used OCaml in production on SPARC/Solaris, POWER/AIX, HP-UX/IA64. (The optimized compiler wouldn't build on AIX.)
Various backends for less used architectures are maintained out of tree, eg here:
https://github.com/retired-camels/ocaml
There's an AIX port of 3.12.1
http://ocaml-ports.geschenker.net/ocaml-aix.html