[Bug 989593] [ppc64] [s390x] ghc-7.6.3 build with ghc-7.6.3 doesn't complete

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=989593



--- Comment #34 from Gustavo Luiz Duarte <gustavold at linux.vnet.ibm.com> ---
(In reply to Jens Petersen from comment #33)
> (In reply to Gustavo Luiz Duarte from comment #27)
> > I was able to build ghc with debug enabled, which gave me a sane stack trace
> > that pointed where ghc is stuck.
> 
> Ah maybe I should enable debuginfo for ghc builds since indeed
> it contains some C code.

Yeah, I believe enabling debuginfo for ghc would be a good idea.

Regardind the changes I've made to build ghc with debug enabled, I added the
following to mk/build.mk:
EXTRA_HC_OPTS=-debug

Please notice this option enables several other checkings and logging
facilities other than just debuginfo. See:
http://ghc.haskell.org/trac/ghc/wiki/Debugging/RuntimeSystem

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