Re: Cross-compiling Template Haskell via -fexternal-interpreter and IPC

Hi Moritz, Sounds like it should be pretty straightforward to run GHCSlave on wine, so it might just work indeed. I'll build a nix environment for my app using your GHC branch and report back ASAP. However, what might block me won't be related to the cross-compilation per-se but to the migration to post 8.2.1 ghc since I'm still slowly making progress with all the dependencies but not there yet. Cheers, Alberto On Sat, May 27, 2017 at 10:51 AM, Moritz Angermann wrote:

Hi Alberto,

let me know if I can be of help. As you likely saw I’ve been writing this all up on https://medium.com/@zw3rk. With the outstanding diffs[1], this should hopefully just work. As I haven’t used windows or know the linker on windows, I’m not perfectly sure about the implications. It could *just work* though. Maybe you can even use the GHCSlave’s Slave.hs[2] for the Raspberry Pi for windows, as it doesn’t encode any Raspberry Pi specifics.

All you would need is to run GHCSlave on wine / or a windows system with some form of network interface, so that the iserv-proxy and GHCSlave can communicate.

Cheers, Moritz

[1]: you can just use the my-ghc branch from https://github.com/zw3rk/ghc [2]: https://github.com/zw3rk/ghc-slave/blob/master/RPi/Slave.hs

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On May 27, 2017, at 4:29 PM, Alberto Valverde wrote:

Hi Ben,

I've just found this email from almost a year ago. Sorry for ignoring it until now. Given the date it was sent I think I missed it when it was fresh while I was on vacation.

Regarding the question, I have abandoned the work I was doing on getting cross-compilation for Windows to work since my employer decided a Windows build for the app we were developing could wait some time and tasked me we something else.

However, I see that Moritz is working on cross-compilation right now so I'll try get some time to see if I can get his approach to work for our use-case and give some feedback or help in any way.

Alberto

On Fri, Aug 26, 2016 at 4:56 PM, Ben Gamari wrote: Alberto Valverde writes:

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On Thu, Jul 7, 2016 at 9:30 AM, Simon Marlow wrote:

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I agree, named pipes are probably a better plan, perhaps a better solution overall than the way we currently pass FD numbers on the command line. Do named pipes work work as expected through wine? We would have to be careful to clean them up again afterwards.

I've implemented IPC with named pipes and it appeared to work through wine but now I'm investigating an issue which causes GHC to "freeze" when talking to the external interpreter when it is not running on a TTY (ie: in a build process)

Hi Alterto,

What ever happened to this? Is there any way I can be of assistance? It would be great to get this merged.

Cheers,

- Ben