Problem with cabal's --enable-library-coverage on 7.8.1rc2

[Federico Mastellone]

It’s the same error with and without the clang-xcode5-wrapper that is named as an alternative solution 

On Mar 7, 2014, at 13:10, Carter Schonwald <carter.schonwald at gmail.com> wrote:

> try using real GCC
> 
> i have these directions https://gist.github.com/cartazio/7131371
> 
> 
> On Fri, Mar 7, 2014 at 10:47 AM, Federico Mastellone <fmaste at gmail.com> wrote:
> Hi,
> 
> On Mac OS X 10.9.2 with ghc 7.8.0.20140228 and cabal 1.18.0.3
> 
> Doing:
> cabal configure --enable-library-coverage
> cabal build
> 
> 
> 
> Fails with:
>> ld: illegal text reloc in '_enablezmlibraryzmcoveragezm0zi0zi1_Library_sendMsg2_info' to '__hpc_tickboxes_enablezmlibraryzmcoveragezm0zi0zi1_Util_hpc' for architecture x86_64
>> clang: error: linker command failed with exit code 1 (use -v to see invocation)
> 
> But without the coverage flag it’s OK.
> 
> I found it when switching from 7.6.3 to 7.8.1RC2 on a project I have and was able to strip it to this:
> https://github.com/fmaste/ghc-7.8.0.20140228-enable-library-coverage
> 
> Don’t know if this is a cabal or ghc problem and I don’t know how to continue.
> 
> Thanks!
> 
> My ghc —info:
>  [("Project name","The Glorious Glasgow Haskell Compilation System")
>  ,("GCC extra via C opts"," -fwrapv")
>  ,("C compiler command","/usr/bin/gcc")
>  ,("C compiler flags"," -m64 -fno-stack-protector")
>  ,("C compiler link flags"," -m64")
>  ,("ld command","/usr/bin/ld")
>  ,("ld flags"," -arch x86_64")
>  ,("ld supports compact unwind","YES")
>  ,("ld supports build-id","NO")
>  ,("ld supports filelist","YES")
>  ,("ld is GNU ld","NO")
>  ,("ar command","/usr/bin/ar")
>  ,("ar flags","clqs")
>  ,("ar supports at file","NO")
>  ,("touch command","touch")
>  ,("dllwrap command","/bin/false")
>  ,("windres command","/bin/false")
>  ,("libtool command","libtool")
>  ,("perl command","/usr/bin/perl")
>  ,("target os","OSDarwin")
>  ,("target arch","ArchX86_64")
>  ,("target word size","8")
>  ,("target has GNU nonexec stack","False")
>  ,("target has .ident directive","True")
>  ,("target has subsections via symbols","True")
>  ,("Unregisterised","NO")
>  ,("LLVM llc command","llc")
>  ,("LLVM opt command","opt")
>  ,("Project version","7.8.0.20140228")
>  ,("Booter version","7.6.3")
>  ,("Stage","2")
>  ,("Build platform","x86_64-apple-darwin")
>  ,("Host platform","x86_64-apple-darwin")
>  ,("Target platform","x86_64-apple-darwin")
>  ,("Have interpreter","YES")
>  ,("Object splitting supported","YES")
>  ,("Have native code generator","YES")
>  ,("Support SMP","YES")
>  ,("Tables next to code","YES")
>  ,("RTS ways","l debug thr thr_debug thr_l thr_p dyn debug_dyn thr_dyn thr_debug_dyn l_dyn thr_l_dyn")
>  ,("Support dynamic-too","YES")
>  ,("Support parallel --make","YES")
>  ,("Dynamic by default","NO")
>  ,("GHC Dynamic","YES")
>  ,("Leading underscore","YES")
>  ,("Debug on","False")
>  ]
> 
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> 

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