Link error with head Re: [commit: ghc] master: GHCi: Properly generate jump code for ARM (#8380) (5bab1a5)

[Carter Schonwald]

No clue.  I'll find out once I get on my computer.   I think Mebe because
stage 1 has no ghci? Pure ignorant speculation mind you.  Please  be sure
to test the fix once I put it on trac (I'll test too of course. )

On Tuesday, November 26, 2013, Amos Robinson wrote:

> Thanks so much, Carter.
>
> What I'm still confused about is this: I was able to build stage 1 and
> then build stage 2 using stage 1. However, if I try building anything
> with either stage, it won't link. How was it able to link stage 2?
>
> On Tue, Nov 26, 2013 at 4:27 PM, Carter Schonwald
> <carter.schonwald at gmail.com <javascript:;>> wrote:
> > I'll cook up a patch and post it to trac in the next hour.
> >
> >
> > On Tuesday, November 26, 2013, Carter Schonwald wrote:
> >>
> >> It's because you're using GCC 4.2 on your Mac.  It's not in GCC till
> 4.3.
> >>
> >> But should be cppd so that it's not used on x86 architectures so that
> this
> >> use doesn't happen
> >>
> >> On Monday, November 25, 2013, Amos Robinson wrote:
> >>>
> >>> Sorry for the noise, it turns out there's already a trac ticket:
> >>> https://ghc.haskell.org/trac/ghc/ticket/8561
> >>> (I didn't find it because I was searching for ___builtin… instead of
> >>> __builtin!)
> >>>
> >>> On Tue, Nov 26, 2013 at 3:39 PM, Amos Robinson <
> amos.robinson at gmail.com <javascript:;>>
> >>> wrote:
> >>> > Hi,
> >>> > I'm having trouble linking with head:
> >>> >
> >>> >> [1 of 1] Compiling Main             ( bindisttest/HelloWorld.lhs,
> >>> >> bindisttest/HelloWorld.o )
> >>> >> Linking bindisttest/HelloWorld ...
> >>> >> Undefined symbols for architecture x86_64:
> >>> >>   "___builtin___clear_cache", referenced from:
> >>> >>      _flushExec in libHSrts.a(Storage.o)
> >>> >> ld: symbol(s) not found for architecture x86_64
> >>> >> collect2: ld returned 1 exit status
> >>> >
> >>> > This is on OSX 10.8.5, where gcc --version gives me
> >>> >> i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc.
> >>> >> build 5658) (LLVM build 2336.11.00)
> >>> >
> >>> > I get the impression that this commit is related. Is it the case that
> >>> > Apple switched from gcc to clang recently? Could that be why
> >>> > ___builtin__clear_cache is missing?
> >>> >
> >>> > I'm sorry, I don't really know anything about the runtime system, so
> >>> > am kind of stuck.
> >>> >
> >>> >
> >>> --SNIP--
> >>> _______________________________________________
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> >>> ghc-devs at haskell.org <javascript:;>
> >>> http://www.haskell.org/mailman/listinfo/ghc-devs
>
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