#5019: OS X: ld: warning: could not create compact unwind for _ffi_call_unix64
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Reporter: altaic | Owner: igloo
Type: bug | Status: new
Priority: high | Milestone: 7.2.1
Component: Compiler | Version: 7.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: MacOS X | Blocking:
Architecture: x86_64 (amd64) | Failure: Incorrect warning at
compile-time
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Comment(by chak):
This is fixed by
{{{
commit 30ccc9f39dd2cf1ad14e6116778aa1fd94526c19
Author: Manuel M T Chakravarty <c...@cse.unsw.edu.au>
Date: Wed Jul 27 23:05:01 2011 +1000
On OS X x86_64, use "-Wl,-no_pie" and "-Wl,-no_compact_unwind" to avoid
linker warnings
- "-Wl,-no_pie" can be removed once GMP gets updated
}}}
on Lion (10.7) with Xcode 4.1. There is still (another) warning on Snow
Leopard. I'd recommend to upgrade your OS.
I wonder whether the warning about the unwinds will go away once we can
compile with clang. In that case, we could remove
"-Wl,-no_compact_unwind". We should also be able to remove "-Wl,-no_pie"
with a newer GMP.
I don't know how this all affects the 32bit build (the patch only applies
to x86_64). Apple basically deprecated 32bit binaries with Lion.
Igloo, do you want to close the bug or leave it open as a reminder. (At
least the priority can be downgraded, I think.)
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5019#comment:16>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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