[GHC] #11211: Please add initial platform support for sparc64

[GHC]

#11211: Please add initial platform support for sparc64
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           Reporter:  glaubitz  |             Owner:
               Type:  bug       |            Status:  new
           Priority:  normal    |         Milestone:
          Component:  Compiler  |           Version:  7.10.2
           Keywords:            |  Operating System:  Linux
       Architecture:  Other     |   Type of failure:  Building GHC failed
          Test Case:            |        Blocked By:
           Blocking:            |   Related Tickets:
Differential Rev(s):            |         Wiki Page:
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 Hello!

 I have successfully bootstrapped ghc for sparc64 on Debian unstable by
 cross-compiling it on amd64, then installing it manually into a build root
 and rebuild the Debian package.

 Unfortunately, the buildds can currently neither compile ghc itself nor
 any Haskell packages as gcc always passes "-relax" to the GNU linker which
 will fail as ghc passes "-Wl,-r" [1]:

 "/usr/bin/ghc" -hisuf hi -osuf  o -hcsuf hc -static  -H32m -O -lffi -optl-
 pthread  -package-db libraries/bootstrapping.conf  -this-package-key
 termi_6iVf4EBnOgfIaaOCLRs8jl -hide-all-packages -i -ilibraries/terminfo/.
 -ilibraries/terminfo/dist-boot/build -ilibraries/terminfo/dist-
 boot/build/autogen -Ilibraries/terminfo/dist-boot/build
 -Ilibraries/terminfo/dist-boot/build/autogen -Ilibraries/terminfo/.
 -optP-include -optPlibraries/terminfo/dist-
 boot/build/autogen/cabal_macros.h -package-key base_HQfYBxpPvuw8OunzQu6JGM
 -Wall -XHaskell2010   -no-user-package-db -rtsopts      -odir
 libraries/terminfo/dist-boot/build -hidir libraries/terminfo/dist-
 boot/build -stubdir libraries/terminfo/dist-boot/build   -c
 libraries/terminfo/./System/Console/Terminfo/Base.hs -o libraries/terminfo
 /dist-boot/build/System/Console/Terminfo/Base.o
 /usr/bin/ld: --relax and -r may not be used together
 collect2: error: ld returned 1 exit status
 make[3]: *** [libraries/terminfo/dist-
 boot/build/System/Console/Terminfo/Base.o] Error 1
 libraries/terminfo/ghc.mk:3: recipe for target 'libraries/terminfo/dist-
 boot/build/System/Console/Terminfo/Base.o' failed

 This issue has already been fixed in ghc but that was for sparc only and
 not sparc64 [2].

 Thus, in order to be able to apply the same fix from [2], ghc needs to add
 sparc64 to its list of known architectures (currently "sparc64" matches to
 "ArchUnknown" in aclocal.m4") and then extend the fix from [2] to match
 *both* sparc *and* sparc64 (please don't drop sparc here).

 In particular, I suggest adding sparc64 in the same way that Alpha, Mipseb
 and Mipsel were added [3], thus matching "sparc64" to "ArchSPARC64", then
 extending the if-clause from [4] to set "-Wl,-no-relax" for *both*
 ArchSPARC *and* ArchSPARC64.

 Thanks,
 Adrian

 > [1]
 https://buildd.debian.org/status/fetch.php?pkg=ghc&arch=sparc64&ver=7.10.3-3&stamp=1449983921
 > [2] https://ghc.haskell.org/trac/ghc/ticket/3791
 > [3]
 https://git.haskell.org/ghc.git/commitdiff/9756690fe7aa26aee6955d0b720377d53170c542
 > [4]
 https://git.haskell.org/ghc.git/commitdiff/3b322660f82d0c7c4f7d02523367ebd0e34c5287

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11211>
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