fPIC issues

[Simon Marlow]

Why is the installed version of cabal-install relevant?  We don't use it 
in the GHC build.

On 24/01/14 14:12, Carter Schonwald wrote:
> What version of cabal-install are you using?
>
> On Friday, January 24, 2014, Jan Stolarek <jan.stolarek at p.lodz.pl
> <mailto:jan.stolarek at p.lodz.pl>> wrote:
>
>     A couple of days ago I realized that I can't compile latest HEAD on
>     my Debian Squeeze laptop.
>     Some -fPIC issues prevented compilation of integer-gmp library. I
>     reported this as #8666. Today I
>     got another PIC-related error on a different machine with openSUSE 11.4:
>
>     /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/bin/ld:
>     dist/build/compile/compile-tmp/Data/Singletons/Core.dyn_o: re
>     location R_X86_64_PC32 against undefined symbol
>     `DataziSingletonsziTypes_Proved_con_info' can not
>     be used when making a shared object; recompile with -fPIC
>     /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/bin/ld:
>     final link failed: Bad
>     value
>     collect2: ld returned 1 exit status
>
>     This happened with HEAD when I tried to compile testsuite configured
>     via cabal file (on 7.6.3 all
>     is fine):
>
>     test-suite compile
>        type:               exitcode-stdio-1.0
>        ghc-options:        -Wall -O0 -main-is Test.Main
>        default-language:   Haskell2010
>        main-is:            Test/Main.hs
>
>     Before I fil in another bug report could someone offer me a
>     straightforward explanation of what is
>     this whole -fPIC thing? Why does it break my code? Is this a known
>     issue? Is there any kind of
>     workaround for this?
>
>     Janek
>
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