PSA: GHC can now be built with Clang

Carter Schonwald carter.schonwald at
Wed Jun 26 09:41:38 CEST 2013

Isaac, Austin and I have actually just been email introduced to Tom, so
excellent timing :)

Happily, we've got a direct contact with the apple folks working on llvm /
clang via  a friend of mine, and thus in turn Tom and some others. The most
important piece is making sure the Clang patches land in Xcode 5's version
of Clang (which is apple's variant that isn't strictly tied to a point
release), because thats going to be the only C compiler for OS X by default
very soon.

So in some respects, because BSD/Linux distros provide system package
managers by default, its easy for a user on those platforms to have a
suitable GCC installed, less so with vanilla OS X, so the most important
part is making sure that these patches land in the Clang that lives in
Xcode 5. If it lands in mainline clang point release too,  great!  (ghc not
being able to useable on macs without the end user needing to build their
own ghc or figure out installing and switching to an older xcode would be a
HUGE headache for the haskell community)

point being: exciting things! (and many many hearty thanks to Austin for
the work to make this move along)

On Wed, Jun 26, 2013 at 12:47 AM, Isaac Dupree <
ml at> wrote:

> Tom Stellard is leading an effort to make dot releases for LLVM 3.3 [*];
> perhaps LLVM folks could be convinced to fix the issues in a 3.3.1 release.
> -Isaac (just happens to be on both email lists and doesn't know anything
> more than this)
> [*]
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at
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