[GHC] #11823: Undefined stg_sel_17_upd_info symbols on OS X

[GHC]

#11823: Undefined stg_sel_17_upd_info symbols on OS X
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  8.0.1-rc3
      Resolution:                    |             Keywords:
Operating System:  MacOS X           |         Architecture:  x86_64
 Type of failure:  Building GHC      |  (amd64)
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by George):

 I think this may be a toolchain issue, IIRC, i had no build problems with
 RC2 when I was not using any of the current toolchain. I just tried rc2
 with my current toolchain and get essentially the same error:
 {{{
  "_stg_sel_17_upd_info", referenced from:
       _s1x56_info in UI.dyn_o
       _s1x6r_info in UI.dyn_o
       _s1xd1_info in UI.dyn_o
       _s1xem_info in UI.dyn_o
 ld: symbol(s) not found for architecture x86_64
 clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 `gcc' failed in phase `Linker'. (Exit code: 1)
 make[1]: *** [ghc/stage2/build/tmp/ghc-stage2] Error 1
 make: *** [all] Error 2
 }}}
 Replying to [comment:8 George]:
 > I am on MacOS 10.11.4, Xcode 7.3, and llvm 3.7.1. I didn't see this on
 RC2 but I don't think I was using Xcode 7.3 then.
 >
 > The error I am getting on rc3 is slightly different than the one in the
 description. Mine is:
 > {{{
 > Undefined symbols for architecture x86_64:
 >   "_stg_sel_17_upd_info", referenced from:
 >       _s1xEL_info in UI.dyn_o
 >       _s1xG6_info in UI.dyn_o
 >       _s1xPC_info in UI.dyn_o
 >       _s1xQ9_info in UI.dyn_o
 > ld: symbol(s) not found for architecture x86_64
 > clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 > `gcc' failed in phase `Linker'. (Exit code: 1)
 > make[1]: *** [ghc/stage2/build/tmp/ghc-stage2] Error 1
 > make: *** [all] Error 2
 > }}}
 > After doing
 > {{{
 > $ touch ghc/GHCi/UI.hs
 > $ make GhcStage2HcOpts='-ddump-to-file -ddump-simpl -ddump-stg -ddump-
 cmm'
 > }}}
 > I get:
 > {{{
 > Undefined symbols for architecture x86_64:
 >   "_stg_sel_17_upd_info", referenced from:
 >       _s1rNh_info in UI.dyn_o
 >       _s1rNO_info in UI.dyn_o
 > ld: symbol(s) not found for architecture x86_64
 > clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 > `gcc' failed in phase `Linker'. (Exit code: 1)
 > make[1]: *** [ghc/stage2/build/tmp/ghc-stage2] Error 1
 > make: *** [all] Error 2
 > }}}
 > Dumpfiles at
 [https://drive.google.com/file/d/0B_TQiA8d1y6fXzR0aThvRzBkZHc/view?usp=sharing]

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11823#comment:11>
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