It's just a build system bug. I think this fixes it:
https://phabricator.haskell.org/D740
Edward
Excerpts from Karel Gardas's message of 2015-03-18 02:11:34 -0700:
>
> Hi,
>
> for a few last days I'm not able to build amd64/solaris11 build of HEAD
> using 7.10.1. I've been using RC1 for this, then post RC2 and now RC3
> and the issue is still the same:
>
> ld: fatal: library -lHSghc-7.11.20150318-5E218FiotzLAN97RtaMkIl: not found
> ld: fatal: file processing errors. No output written to
> ghc/stage1/build/tmp/ghc-stage1
> collect2: ld returned 1 exit status
> gmake[1]: *** [ghc/stage1/build/tmp/ghc-stage1] Error 1
> gmake: *** [all] Error 2
>
>
> the problem is that the library which is created is named:
> libHSghc-7.11-5E218FiotzLAN97RtaMkIl.a and so is
> missing there, hence linking fails.
>
> I assume this may be caused by the patch below, but I'm not sure so if
> I'm mistaken here I'm sorry for this Edward.
>
> Anyway, I would like to raise this concern since we're already in RC3
> for 7.10.1 and if something needs to be changed there, it would be
> better to do that rather sooner IMHO. Although this is issue on Solaris
> I assume it to be same on Linux, except that we probably don't have
> user/buildbot building HEAD with not yet release 7.10.1 and so we do not
> have this reported. Solaris11/amd64 is kind of special here, since the
> support for this platform is new in 7.10.1 and so I need to use this
> unreleased compiler.
>
> For compilation log please have a look into amd64/solaris11 buildbot
> output:
> http://haskell.inf.elte.hu/builders/solaris-amd64-head/232/10.html --
> this is still using post-RC2 as a bootstrap compiler, but the issue with
> RC3 is the same.
>
>
> Thanks!
> Karel
>
>
>
> commit 838d8044896b6544d8c80c2ab5de63d97220f06c
> Author: Edward Z. Yang
> Date: Wed Mar 11 14:53:17 2015 +0100
>
> Update Cabal submodule to latest 1.22 snapshot
>
> This changes the library file name format
>
> NOTE: This patch originally updated to Cabal HEAD, but was reduced to
>update to Cabal 1.22 HEAD by hvr as this is needed in order to
>update the filepath submodule to version 1.4.0, and subsequently
>to be cherry-picked into the ghc-7.10 branch
>
> Signed-off-by: Edward Z. Yang
>
> Reviewed By: austin
>
> Differential Revision: https://phabricator.haskell.org/D707
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