[Haskell-cafe] Building 32-bit binaries on a 64-bit system?

[Lana Black]

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 at 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 <michael at snoyman.com
> <mailto:michael at 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 <mwm at mired.org
> <mailto:mwm at 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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