Error building ghc on raspberry pi.

[roconnor at theorem.ca]

On Wed, 16 Jan 2013, Karel Gardas wrote:

> You should not IMHO. My patch should solve all your issues. :-) The only 
> issue you may get is that your distro ghc will compile for soft-float ABI and 
> your compiled GHC will compile to hard-float and object files will get mixed 
> somewhere. But I trust your distro ghc builders that this is not the case so 
> both GHCs should compile using hard-float. So issue solved, at least should 
> be. Now I'm just waiting if you verify this or not so I'm either able to 
> submit the patch for inclusion or hack it more...

I switched to using llvm-3.0 from rasbian, and made a lot of progress. (In 
retrospect I built llvm-3.1 using nix, and it was in a completely 
different toolchain than the rest of the build.  I should have known that 
it wouldn't work).

I was able to complete the build of ghc-7.6.1 using Karel's patch and

./configure --with-llc=/usr/bin/llc-3.0 --with-opt=/usr/bin/opt-3.0

I was able to make binary-dist after doing

mkdir compiler/stage2/doc

However after unpacking the binary distribution and doing a make install I 
get:

Installing library in /tmp/bindist/lib/ghc-7.6.1/ghc-prim-0.3.0.0
ghc-cabal: Failed to read "target arch" value "ArchARM {armISA = ARMv6,
armISAExt = [VFPv2], armABI = }"
make[1]: *** [install_packages] Error 1
make: *** [install] Error 2

And in particular the installed ghc gives the error:

$ bin/ghc
Failed to read "target arch" value "ArchARM {armISA = ARMv6, armISAExt = 
[VFPv2], armABI = }"

Sounds to me like Karel's patch is almost, but not quite there.

Karel, maybe you should try deploying a binary-dist on your panda board?

-- 
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
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