With 7.4.2, the patches for full ARM linker support were merged and released. Are there any official builds of GHC for Linux/ARM yet? I have a PandaBoard ES I'd be willing to contribute for builds and/or testing/development, but I don't know where to get a GHC for bootstrapping. It's also worth asking if there's any page documenting needed prerequisites/expected build environment. If not it should be added to the wiki (I don't see any as of right now.) -- Regards, Austin
Austin Seipp wrote:
With 7.4.2, the patches for full ARM linker support were merged and released. Are there any official builds of GHC for Linux/ARM yet? I have a PandaBoard ES I'd be willing to contribute for builds and/or testing/development, but I don't know where to get a GHC for bootstrapping.
It's also worth asking if there's any page documenting needed prerequisites/expected build environment. If not it should be added to the wiki (I don't see any as of right now.)
I'm not sure what linux distro you're rinning on that, but if you run Debian (probably also Ubuntu) then you can apt-get a working GHC. Cheers, Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/
On 07/ 9/12 12:06 AM, Austin Seipp wrote:
With 7.4.2, the patches for full ARM linker support were merged and released. Are there any official builds of GHC for Linux/ARM yet? I have a PandaBoard ES I'd be willing to contribute for builds and/or testing/development, but I don't know where to get a GHC for bootstrapping.
Just install Ubuntu 11.10 or 12.04 and install ghc/llvm with apt-get install command as Eric already pointed out.
It's also worth asking if there's any page documenting needed prerequisites/expected build environment. If not it should be added to the wiki (I don't see any as of right now.)
The wiki is linked from the GHC platforms page as ARMLinuxGNUEABI: http://hackage.haskell.org/trac/ghc/wiki/Building/ARMLinuxGnuEABI -- it's little outdated so should be improved with a note about debian/ubuntu shipping registerised ghc builds with llvm in the latest releases. Also, Freescale donated i.MX53 QSB for GHC/ARM builder, you can see it here: http://darcs.haskell.org/ghcBuilder/builders/kgardas-linux-arm-head/index.ht... it currently fails due to this issue: http://hackage.haskell.org/trac/ghc/ticket/7049 As per GHCi support. Even on 7.4.2 I still get quite a lot of ghci related failures so we're still not where we might be. If you are going to hack on it, please get in touch with Ben Gamari (cced on this email) first as he is the man behind ARM Linker support. I think for Linker hacking, using 7.4.x branch code should be fine at least till GHC HEAD unbreaks again. In comparison with 7.4.x, GHC HEAD provides more ARM related functionality: 1) --with-llc/--with-opt configure command-line options to support compilation of GHC with specified LLVM's tools -- done to please distro folks 2) ARM hard-float ABI support. (usable for example on Ubuntu 12.04 which is hard-float ABI) If you are going to donate some of your panda ES time for GHC/ARM builder, that would be fine as having more builders never hurt. Please just make sure you don't see any stability issues I see for example with my panda (temperature/eth/nfs related). That's the reason I'm using i.MX53 QSB for builder and not the panda... Last note: GHC/ARM depends on GHC's specific calling convention support in LLVM. Unfortunately for ARM platform it was merged into LLVM 3.0, but not into LLVM HEAD (at that time), so LLVM 3.1 doesn't support GHC/ARM at all. I'm trying to resubmit the support for inclusion here: http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-June/051119.html -- but it's still not merged in. Thanks and welcome to GHC/ARM camp! Karel
Karel Gardas wrote:
Last note: GHC/ARM depends on GHC's specific calling convention support in LLVM. Unfortunately for ARM platform it was merged into LLVM 3.0, but not into LLVM HEAD (at that time), so LLVM 3.1 doesn't support GHC/ARM at all. I'm trying to resubmit the support for inclusion here: http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-June/051119.html -- but it's still not merged in.
Karel, its probably time you pinged them again asking for that to be merged :-). Cheers, Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/
ghc-7.4.2 should also build fine on Fedora 17 ARM. Just "yum install ghc llvm" first. I can provide a src rpm if it helps. Jens
On 12 July 2012 14:41, Jens Petersen
ghc-7.4.2 should also build fine on Fedora 17 ARM.
Well, at least with Karel's armhfp patch...
Just "yum install ghc llvm" first.
I tested building RC1 on Fedora ARM, and this is basically the same srpm (src rpm package) for 7.4.2 including that patch: http://petersen.fedorapeople.org/ghc-7.4.2-5.1.fc17.src.rpm which I believe should build cleanly on F17 with newer ghc-rpm-macros. Jens
participants (4)
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Austin Seipp -
Erik de Castro Lopo -
Jens Petersen -
Karel Gardas