Re: Error building ghc on raspberry pi.

What version of GHC did you build? On Sat, 12 Jan 2013, Ben Gamari wrote:

Karel Gardas writes:

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On 01/11/13 09:25 PM, roconnor@theorem.ca wrote:

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On Thu, 10 Jan 2013, Karel Gardas wrote:

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Hmm, are you using Raspbian? I.e. hard-float abi caught my eye in case of ARMv6/ARM11 chip here...

I'm afraid LLVM is not well guided in your case so could you be so kind and test if adding -optlc=-mattr=+vfp2 helps? You need to add it to your build.mk probably and you will need to rebuild everything again...

Add it to the GhcLibHcOpts?

Probably too, I'm not the expert here, just make sure you use this option for any ghc invocation which invokes llc to get consistent vfp usage in your object files...

I've been struggling with this class of error recently as well.

After several failed builds I arrived at the following on my Pandaboard,

SRC_HC_OPTS = -H64m -Rghc-timing -optc-mfloat-abi=hard -optc-mcpu=cortex-a9 -optlc-float-abi=hard -optlc-mcpu=cortex-a9

I've found it's best to set both gcc and llc arguments as they tend to disagree when you least expect it. I'm not sure whether SRC_HC_OPTS is too large a hammer, but it seems to work for me.

Cheers,

- Ben

-- Russell O'Connor http://r6.ca/ ``All talk about `theft,''' the general counsel of the American Graphophone Company wrote, ``is the merest claptrap, for there exists no property in ideas musical, literary or artistic, except as defined by statute.''