[GHC] #11780: GHC stage-2 build fails with "relocation R_X86_64_PC32 against `exitStaticPtrTable' can not be used when making a shared object"

[GHC]

#11780: GHC stage-2 build fails with "relocation R_X86_64_PC32 against
`exitStaticPtrTable' can not be used when making a shared object"
-------------------------------------+-------------------------------------
           Reporter:  zadarnowski    |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  7.10.3
           Keywords:                 |  Operating System:  Linux
       Architecture:  x86_64         |   Type of failure:  Building GHC
  (amd64)                            |  failed
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 On very old versions of CentOS (5.x) running GCC 4.1.2, GHC fails to build
 with the following error:

 {{{
 /usr/bin/ld: rts/dist/build/RtsStartup.dyn_o: relocation R_X86_64_PC32
 against `exitStaticPtrTable' can not be used when making a shared object;
 recompile with -fPIC
 /usr/bin/ld: final link failed: Bad value
 }}}

 This appears to be caused by #pragma GCC visibility push(hidden) in
 BeginPrivate.h. Removing the HAS_VISIBILITY_HIDDEN macro from mk/config.h
 results in a successful build.

 BeginPrivate.h contains a comment which seems to indicate similar problem
 occurs with GCC 4.2.1 on FreeBSD. I suggest that the #if directive in
 {Begin,End}Private.h be changed to cover both systems, by enabling
 visibility pragmas only on GCC versions higher than 4.2 as follows:

 {{{
 #if defined(HAS_VISIBLITY_HIDDEN) && (__GNUC__ > 4 || (__GNUC__ == 4 &&
 __GNUC_MINOR__ > 2)
 }}}

 Old versions of CentOS are still prolific in enterprise environments so it
 would be great for advocacy reasons to get that fix into the next release
 of GHC.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11780>
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