GHC build failure

[Austin Seipp]

OK, so I think the reason is because this commit:

https://phabricator.haskell.org/rGHC3b55659d4f54e503f4e550d762bc55a2650ed13d

actually changed the ghc-bin.cabal.in file under ghc/. Which we use to
generate ghc-bin.cabal, which is actually fed to Cabal to build the
'ghc' executable. The build system generates these files from .in
files (from autoconf) very early so 'make' doesn't track the
dependencies here, and it can't rebuild the files from the .in files.
That means you need to regenerate the .cabal file from the .in file to
pick up 'deepseq', which was added to Build-Depends.

The reason this gets 'fixed' with ./validate is precisely because
validate cleans the entire tree and re-boots it before continuing. So
it happens automatically.

TL;DR you should re-./boot and re-./configure again, as Herbert said.
In practice this shouldn't cost you much time, because even though GHC
will re-run the build steps, most of the results of those steps will
be cached compilations, which it can skip. If that doesn't work, then
distclean and start over - which sucks, but you won't have to do it
again ('make' will work fine to rebuilt).

On Thu, Jun 11, 2015 at 11:23 AM, Simon Peyton Jones
<simonpj at microsoft.com> wrote:
> I got the same thing on my 7.10 branch.  But when I said "sh validate" (which starts with make distclean etc) all was well.
>
> S
>
> |  -----Original Message-----
> |  From: ghc-devs [mailto:ghc-devs-bounces at haskell.org] On Behalf Of
> |  Wolfgang Jeltsch
> |  Sent: 11 June 2015 16:20
> |  To: ghc-devs at haskell.org
> |  Subject: Re: GHC build failure
> |
> |  Hi again,
> |
> |  it still fails with the same error message.
> |
> |  All the best,
> |  Wolfgang
> |
> |  Am Donnerstag, den 11.06.2015, 18:17 +0300 schrieb Wolfgang Jeltsch:
> |  > Hi,
> |  >
> |  > I did not care about the submodules; so this could be the reason of
> |  > the failure. That said, running
> |  >
> |  >     git submodule update --init
> |  >
> |  > now only showed a message regarding utils/haddock, which causes me
> |  > some doubts that it will really fix the issue with deepseq. Let’s
> |  see.
> |  >
> |  > All the best,
> |  > Wolfgang
> |  >
> |  > Am Donnerstag, den 11.06.2015, 16:49 +0200 schrieb Thomas Miedema:
> |  > > Maybe you forgot `git submodule init` or `git submodule update`?
> |  See
> |  > > this page for a simple trick to never forget again:
> |  > >
> |  https://ghc.haskell.org/trac/ghc/wiki/WorkingConventions/Git/Submodu
> |  > > les#UsingaGitalias
> |  > >
> |  > >
> |  > > If that didn't work, do a `make maintainer-clean` and try again.
> |  > >
> |  > >
> |  > >
> |  > > On Thu, Jun 11, 2015 at 4:37 PM, Wolfgang Jeltsch
> |  > > <g9ks157k at acme.softbase.org> wrote:
> |  > >         Hi,
> |  > >
> |  > >         I just updated my GHC HEAD copy via git pull and tried to
> |  > >         rebuild GHC
> |  > >         with BuildFlavour set to devel2. I got the following error
> |  > >         message:
> |  > >
> |  > >             ghc/InteractiveUI.hs:68:8: error:
> |  > >                 Could not find module ‘Control.DeepSeq’
> |  > >                 It is a member of the hidden package
> |  > >                 ‘deepseq-1.4.1.1 at deeps_6vMKxt5sPFR0XsbRWvvq59’.
> |  > >                 Use -v to see a list of the files searched for.
> |  > >
> |  > >         Any ideas what to do?
> |  > >
> |  > >         All the best,
> |  > >         Wolfgang
> |  >
> |  >
> |  > _______________________________________________
> |  > ghc-devs mailing list
> |  > ghc-devs at haskell.org
> |  > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
> |
> |
> |  _______________________________________________
> |  ghc-devs mailing list
> |  ghc-devs at haskell.org
> |  http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs



-- 
Regards,

Austin Seipp, Haskell Consultant
Well-Typed LLP, http://www.well-typed.com/