Thanks, the worked like a charm! Any chance this can be used for cross-compiling from a Unix desktop to embedded arm? On Fri, Oct 16, 2015, 09:24 Michael Snoyman wrote:

Stack has a command line argument --arch, mostly intended for the Windows case. Try stack --install-ghc --arch i386 build, it should do what you want.

On Fri, Oct 16, 2015, 5:22 PM Mike Meyer wrote:

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I've got someone who wants to run one of my haskell apps on a 32-bit Windows 10 box. I've pretty much moved to 64-bit everywhere, so don't have such a system to build on.

Is it possible to get stack/cabal/ghc to build a 32-bit Windows binary on a 64-bit Windows box? Google found a bunch of things about building 64 bit applications, and the ghc manual doesn't seem to have such an option. So do I need to get a 32-bit system for this?

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One can run arm binaries on x86_64 using qemu user emulation and binfmt on linux.   Original Message   From: Roman Cheplyaka Sent: Saturday, October 17, 2015 2:04 PM To: haskell-cafe@haskell.org Subject: Re: [Haskell-cafe] Building 32-bit binaries on a 64-bit system? On 10/17/2015 03:29 PM, Mike Meyer wrote:

Thanks, the worked like a charm! Any chance this can be used for cross-compiling from a Unix desktop to embedded arm?

Not as easy as that. This solution relies on the fact that you can run i386 binaries on x86-64, which is obviously not true for arm. See https://ghc.haskell.org/trac/ghc/wiki/Building/CrossCompiling for how to build a cross-compiler.

On Fri, Oct 16, 2015, 09:24 Michael Snoyman mailto:michael@snoyman.com> wrote:

Stack has a command line argument --arch, mostly intended for the Windows case. Try stack --install-ghc --arch i386 build, it should do what you want.

On Fri, Oct 16, 2015, 5:22 PM Mike Meyer mailto:mwm@mired.org> wrote:

I've got someone who wants to run one of my haskell apps on a 32-bit Windows 10 box. I've pretty much moved to 64-bit everywhere, so don't have such a system to build on.

Is it possible to get stack/cabal/ghc to build a 32-bit Windows binary on a 64-bit Windows box? Google found a bunch of things about building 64 bit applications, and the ghc manual doesn't seem to have such an option. So do I need to get a 32-bit system for this?

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I was able to build a docker container for an ARM cross-compiler, if you find it helpful please have a look here: https://github.com/AlexeyRaga/ghc-docker-cross-arm Cheers On Mon, Oct 19, 2015 at 3:00 AM Mike Meyer wrote:

On Sat, Oct 17, 2015 at 9:04 AM Roman Cheplyaka wrote:

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On 10/17/2015 03:29 PM, Mike Meyer wrote:

...

Thanks, the worked like a charm! Any chance this can be used for cross-compiling from a Unix desktop to embedded arm?

Not as easy as that. This solution relies on the fact that you can run i386 binaries on x86-64, which is obviously not true for arm.

Yeah, I sort of expected that. But i'd be nice if it works.

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See https://ghc.haskell.org/trac/ghc/wiki/Building/CrossCompiling for how to build a cross-compiler.

Doesn't work for me for building embedded code. The target arm-none-eabi fails to configure because gcc doesn't work, because _exit doesn't exist. Which is indeed the case. I don't see any way to turn that off.

Is this not supported by ghc? _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe