TL;DR, you cant use llvm 3.5 or 3.6 with any current ghc release. use 3.4 or older On Tue, Nov 4, 2014 at 10:56 PM, Jens Petersen wrote:

Hi Jarl,

I think I just ran into this too for Fedora 22 rawhide on ARM and found your posts...

On 30 October 2014 16:11, Jarl Gunnar Flaten wrote:

...

(cf. reddit thread http://www.reddit.com/r/haskell/comments/2kpsz5/ghc_problem_new_llvm_schedul... )

I am trying to compile a simple "hello world" program (test.hs). When compiling I am notified:

...

[1 of 1] Compiling Main ( test.hs, test.o ) You are using a new version of LLVM that hasn't been tested yet!

...

test: schedule: re-entered unsafely. Perhaps a 'foreign import unsafe' should be 'safe'?

Isn't working. I'm not familiar enough with neither LLVM nor Haskell to troubleshoot from either of these; I don't even know if the messages are even related.

They are related in the sense that llvm-3.5 seems to this problem and it is not officially supported by ghc-7.6 or ghc-7.8 (hence the warning). ghc-7.8 supports 3.4 and 7.6 seems to mostly work with some patches.

Can you provide more details on your environment: OS and ghc version etc?

I am not sure yet what is causing this: perhaps you could try compiling with "-threaded" and see if that helps?

Jens

_______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://www.haskell.org/mailman/listinfo/ghc-devs

Jens, Yes, we'd like to land D155 before 7.10. I've CC'd the relevant people on the patch. Can anyone speak up as to how far along this is? I believe after Peter's review, the ball is in your court, Ben? On Thu, Nov 6, 2014 at 3:40 AM, Jens Petersen wrote:

On 6 November 2014 00:49, Carter Schonwald wrote:

...

TL;DR, you cant use llvm 3.5 or 3.6 with any current ghc release. use 3.4 or older

Can we expect 3.5 (3.6) to work with ghc-7.10? (FWIW helloworld seems to work ok with ghc-7.8.3 on x86_64, but not on ARMv7.)

Or anyone have any patches?

Jens

_______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://www.haskell.org/mailman/listinfo/ghc-devs

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