Error building ghc on raspberry pi.

[roconnor at theorem.ca]

Thanks for the advice;  However, it had little effect.

I now have the errors:

===--- building final phase
make -r --no-print-directory -f ghc.mk phase=final all
   LD libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o
/usr/bin/ld: error: libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.o uses VFP register arguments, libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o does not
/usr/bin/ld: failed to merge target specific data of file libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.o
/usr/bin/ld: error: libraries/ghc-prim/dist-install/build/cbits/debug.o uses VFP register arguments, libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o does not
/usr/bin/ld: failed to merge target specific data of file libraries/ghc-prim/dist-install/build/cbits/debug.o
/usr/bin/ld: error: libraries/ghc-prim/dist-install/build/cbits/longlong.o uses VFP register arguments, libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o does not
/usr/bin/ld: failed to merge target specific data of file libraries/ghc-prim/dist-install/build/cbits/longlong.o
/usr/bin/ld: error: libraries/ghc-prim/dist-install/build/cbits/popcnt.o uses VFP register arguments, libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o does not
/usr/bin/ld: failed to merge target specific data of file libraries/ghc-prim/dist-install/build/cbits/popcnt.o
make[1]: *** [libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o] Error 1

Anyone else building GHC on a pi?

On Tue, 8 Jan 2013, Thijs Alkemade wrote:

>
> Op 8 jan. 2013, om 05:16 heeft roconnor at theorem.ca het volgende geschreven:
>
>> On Thu, 3 Jan 2013, Thijs Alkemade wrote:
>>
>>> I believe I had the same problem, which disappeared after upgrading llvm from 3.0 to 3.1, and using that instead for ./configure.
>>>
>>> Hope this helps,
>>> Thijs
>>
>> Thanks, using LLVM 3.1 seems to have improved the siutation, but I'm running into a new error.
>>
>> Here is the error I get when trying to build GHC 7.6.1 from 7.4.1
>>
>> ===--- building final phase
>> make -r --no-print-directory -f ghc.mk phase=final all
>>  LD libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o
>> /usr/bin/ld: error: libraries/ghc-prim/dist-install/build/cbits/debug.o uses VFP register arguments, libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o does not
>> /usr/bin/ld: failed to merge target specific data of file libraries/ghc-prim/dist-install/build/cjjbits/debug.o
>> /usr/bin/ld: error: libraries/ghc-prim/dist-install/build/cbits/longlong.o uses VFP register arguments, libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o does not
>> /usr/bin/ld: failed to merge target specific data of file libraries/ghc-prim/dist-install/build/cbits/longlong.o
>> /usr/bin/ld: error: libraries/ghc-prim/dist-install/build/cbits/popcnt.o uses VFP register arguments, libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o does not
>> /usr/bin/ld: failed to merge target specific data of file libraries/ghc-prim/dist-install/build/cbits/popcnt.o
>> make[1]: *** [libraries/ghc-prim/dist-install/build/HSghc-prim-0.3.0.0.o] Error 1
>>
>> I get similar errors when building GHC 7.4.1 (patched with http://hackage.haskell.org/trac/ghc/attachment/ticket/5914/0001-add-support-for-ARM-hard-float-ABI-fixes-5914.patch).
>>
>> Any of you encountered this problem before?
>>
>
> Yeah, I had a lot of these. The problem was that GHC has a lot of different "CFLAGS",
> so finding the right way to pass "-float-abi=hard" to every one of them took some time, but
> eventually I ended up with the following change to mk/build.mk:
>
> ifeq "$(BuildFlavour)" "quick"
>
> SRC_HC_OPTS        = -H64m -O0 -fasm
> GhcStage1HcOpts    = -O -fasm
> GhcStage2HcOpts    = -O0 -fasm
> GhcLibHcOpts       = -O -fasm -optlc-float-abi=hard
> SplitObjs          = NO
> HADDOCK_DOCS       = NO
> BUILD_DOCBOOK_HTML = NO
> BUILD_DOCBOOK_PS   = NO
> BUILD_DOCBOOK_PDF  = NO
>
> endif
>
> (Change the build flavor you are using, of course)
>
> And I ran configure as:
>
> LDFLAGS="-marm -mfloat-abi=hard -mfpu=vfp" CFLAGS="-marm -mfloat-abi=hard -mfpu=vfp" ./configure --with-opt=/usr/bin/opt-3.1 --with-llc=/usr/bin/llc-3.1 --with-ld=`which ld.gold`
>
> (I switched to the gold linker, because ld was running out of RAM often.)
>
> I did eventually finish building stage2, but the final executable segfaulted on start.
> I haven't investigated much why that happened, the days it takes to rebuild it just
> made me give up.
>
> Hope this helps,
> Thijs

-- 
Russell O'Connor                                      <http://r6.ca/>
``All talk about `theft,''' the general counsel of the American Graphophone
Company wrote, ``is the merest claptrap, for there exists no property in
ideas musical, literary or artistic, except as defined by statute.''