ANNOUNCE: GHC 7.8.1 Release Candidate 2

Carter Schonwald carter.schonwald at
Tue Mar 4 17:32:00 UTC 2014

@mark, theres no runtime detection logic patch, theres just a config time
hack currently.

I've a work in progress partial patch to expose the CPP program choice +
flags into the ghc settings file, , but lifes got me a bit
overloaded these past few weeks so we need someone to "own" finishing it up
(and i'm uncertain if i can hard allocate that time this week or next... i
have some personal obligations that need take priority).  That said, I may
find up finding some time to whack on it more

point being, agreed, the wrapper hack aint ok :)

On Tue, Mar 4, 2014 at 9:57 AM, Mark Lentczner <mark.lentczner at>wrote:

> It looks like the Mac builds are specific to the version of Mac OS X they
> were compiled on. This is very unfortunate, as now we'll have to produce at
> least four variants of HP for each.
> The only thing holding back a build on either Maverricks or Mountain Lion
> (10.9 and 10.8) from working on 10.7 ~ 10.9 is the set of flags passed to
> the c compiler. On a machine with only clang, these need three extra flags.
> I had thought that there was a patch that allowed GCC to dynamically
> determine if it was working with clang, and if so, pass the extra flags. It
> didn't look like that patch made it in. I seem to have lost track of who
> did this patch and it's status. Carter: do you remember?
> For the platform, I might be able to patch around this with a variant of
> my ghc-clang-wrapper script - beefing it up to remove those flags if not
> clang.
> - Mark
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