Re: [Caml-list] [RFC] Remaining changes for cross-compilation support in OCaml

[Adrien Nader <adrien@notk.org>]

On Fri, Feb 21, 2014, Benoît Vaugon wrote:
> Hi,
> 
> For cross-compilation, have you seen opam cross-compiler packages
> for win32 and win64:
> https://github.com/vouillon/opam-windows-repository, and for
> android: https://github.com/vouillon/opam-android-repository? These
> repositories also provide opam packages for some cross-compiled
> libraries, which is not simple because it requires both the host
> ocaml compilers and the cross-ones. Itmight be interesting to
> combineour efforts...

I had been pointed to them a few months ago. From what I can tell, these
patches to the compiler cannot be integrated upstream; they require
"manual" steps like "make -C dir/ foo && mv bar baz && make -C dir2" and
a few changes which can only apply to windows targets.

By the way, the patches I've worked on were not started by me. However I
cannot trace their path properly; as far as I can tell, they were
started in Fedora, then went through debian and then mxe.cc.

Looking at these pages, I notice that I forgot one component for the
patches: ocamlfind and build system integration. IOW, how to cross-build
libraries. I'll add that to the RFC.

> As with your compiler, linking bytecode with -custom doesn't work
> with these compilers too, due to the same reason.

Actually, the patches I have make it possible to link bytecode with
-custom; it's simply that the test that would fail for cross-compilation
is skipped.

-- 
Adrien Nader