[SCIP] Binary for ARM architecture

[Corentin Le Molgat]

My 2 cents, google/or-tools oss release eng here:
- Since you have a CMake build system you could test arm build using linaro
cross toolchain
simple PoC:
https://github.com/Mizux/cmake-cpp/blob/main/tools/cross_compile.sh
workflows:
https://github.com/Mizux/cmake-cpp/blob/main/.github/workflows/aarch64_toolchain.yml

note I use a Makefile to orchestrate them (
https://github.com/Mizux/cmake-cpp/blob/main/ci/Makefile#L255-L306)

- You could also use docker over qemu on github action workflow to test
build on arm64v8 image (warning: ~x8 on compile time -_- )
https://github.com/Mizux/cmake-cpp/actions/workflows/aarch64_docker.yml
(basically use docker buildx --platform linux/arm64)
doc:
https://github.com/Mizux/cmake-cpp/tree/main/ci#run-arm64v8-image-on-amd64-machine

- For Apple M1 we would like to also support it for Google/OR-Tools, if we
manage to have a M1 machine I'll try to send you my potential CMake patch
if needed.

On Wed, Nov 24, 2021 at 12:08 PM Barry Hurley <b.hurley at keelvar.com> wrote:

> Many thanks Mathieu and Franziska, I will follow up offline with you.
>
> Regards,
> Barry
> On 24 Nov 2021, 09:38 +0000, Franziska Schloesser <schloesser at zib.de>,
> wrote:
>
> Dear Barry,
>
> Currently we are testing compilation on arm on a raspberry pi, where we
> include a locally compiled onetbb2021.4. The distributed binary package
> includes a scip compiled with soplex and papilo.
>
> As far as I know there are no immediate plans for getting a mac machine
> with the new architecture.
>
> For improving the compilation, let's continue the discussion privately.
> Please send me logfile containing the error(s) and we can check it.
>
> Best,
> Franziska
> On 11/24/21 9:44 AM, Mathieu Besançon wrote:
>
> Dear Barry,
>
> I think PaPILO depends on libraries that are not cross-platform, it will
> be a mid-term goal to make it compile everywhere. In the meantime for Mac
> ARM, compiling with PaPILO off should work?
>
> Let us know if it doens't.
>
> Regards,
> Mathieu Besançon
>
> On Mon, Nov 22, 2021 at 11:38 AM Barry Hurley <b.hurley at keelvar.com>
> wrote:
>
>> Hi,
>>
>> I wonder if there are any plans to provide binary packages for the ARM
>> architecture? The latest v7.0.3 source code does not cleanly compile on a
>> new ARM64v8 MacBook Pro – there are some external dependencies such as
>> “catch” in papilo that are missing upstream changes for ARM support. I
>> managed to get it to compile by updating that and disabling some things but
>> there were a number of warnings. `make test` successfully passes 1361 tests.
>>
>> Is this something that there is any plans to provide official binaries
>> for? I would be happy to help in any way I can. With Apple no longer
>> selling Intel machines, this is likely to become a growing demand I would
>> expect. Many thanks in advance, and thank you for all the work that has
>> gone into the SCIP suite so far.
>>
>> Regards,
>> Barry Hurley
>> Keelvar
>> _______________________________________________
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>>
>
>
> --
> Mathieu Besançon
>
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