ANNOUNCE: GHC 7.2.1 Release Candidate 1

Ian Lynagh igloo at
Tue Aug 9 13:42:18 CEST 2011

On Tue, Aug 09, 2011 at 10:52:39AM +1000, Manuel M T Chakravarty wrote:
> Ian Lynagh:
> > On Mon, Aug 08, 2011 at 11:20:18PM +1000, Manuel M T Chakravarty wrote:
> >> Ian Lynagh:
> >> You are right that the bindists use the default gcc (i.e., the one with the LLVM backend).  That is ok, though, as GHC supplies the stack unwinding linker option.
> > 
> > Do you really mean the bindists (i.e. the .tar.bz2 files), rather than
> > the installers (.pkg)?
> Yes, I mean the tar.bz2 file.  When I unpack it on Lion and run ./configure, configure picks '/usr/bin/gcc' and not '/usr/bin/gcc-4.2' as the C compiler.  (I can force it to use gcc-4.2 with '--with-gcc=/usr/bin/gcc-4.2'.)

Hmm, odd. I've filed #5397 and I'll investigate later.

> P.S.: The .pkg package uses a bindist internally. (At least, that was how my original implementation of the packaging worked.)  So, the two should usually behave the same.

It uses an installed bindist, I believe, so configure was run on my Mac
(XCode < 4) rather than yours (XCode >= 4).


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