Error building ghc on raspberry pi.

[roconnor at theorem.ca]

This is the settingings file:

$ cat settings
[("GCC extra via C opts", " -fwrapv"),
  ("C compiler command", "/usr/bin/gcc"),
  ("C compiler flags", " -fno-stack-protector  -Wl,--hash-size=31 -Wl,--reduce-memory-overheads"),
  ("ar command", "/usr/bin/ar"),
  ("ar flags", "q"),
  ("ar supports at file", "YES"),
  ("touch command", "touch"),
  ("dllwrap command", "/bin/false"),
  ("windres command", "/bin/false"),
  ("perl command", "/usr/bin/perl"),
  ("target os", "OSLinux"),
  ("target arch", "ArchARM {armISA = ARMv6, armISAExt = [], armABI = HARD}"),
  ("target word size", "4"),
  ("target has GNU nonexec stack", "False"),
  ("target has .ident directive", "True"),
  ("target has subsections via symbols", "False"),
  ("LLVM llc command", "/home/pi/.nix-profile/bin/llc"),
  ("LLVM opt command", "/home/pi/.nix-profile/bin/opt")
  ]

On Wed, 9 Jan 2013, Karel Gardas wrote:

>
> Hi,
>
> find ghc's generated settings file. What FPU is used there?
>
> Thanks,
> Karel
>
> On 01/ 9/13 09:47 PM, roconnor at theorem.ca wrote:
>> 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
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