- iPhone - Haskell.org

Using ghc-ios with cabal sandbox
by Axis Sivitz 14 Nov '14

14 Nov '14

Is anyone using ghc-ios with cabal sandbox? I am having trouble with it. I can 'cabal-ios install’ fine. That installs the packages properly in the sandbox for arm and x86. But the ghc-ios script doesn’t use the sandbox environment. And running a simple 'cabal exec ghc-ios …’ clobbers the package-db path: I get... "Using binary package database: /…/sandbox/x86_64-osx-ghc-7.8.3-packages.conf.d/package.cache” and then a bunch of errors like: Bad interface file: /usr/local/lib/ghc-7.8.3/base-4.7.0.1/Prelude.hi magic number mismatch: old/corrupt interface file? (wanted 129742, got 33214052) I guess the best solution is for cabal’s exec command to respect the arguments that cabal-ios provides. But maybe in the meantime perhaps I can tweak the ghc-ios script to add an argument to look for the presence of sandboxing, unless anyone else has a better idea. Thanks, Axis

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About dead code stripping.
by Moritz Angermann 06 Sep '14

06 Sep '14

Hi, after getting ghc-ios working properly and a small ios app working, I was looking into what was missing from the ghc ios cross compiler [1]. One is TH for cross compilers, which lenses uses, if I'm not mistaken. The other directly ghc related one is dead code removal. I'm by no means an expert but why not take a stab, right? If someone could provide some initial leads where to look, what to read and failing tests, that would need to be fixed, that would be very awesome! Cheers, Moritz [1]: https://ghc.haskell.org/trac/ghc/wiki/Building/CrossCompiling/iOS

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Re: [Haskell-iPhone] ARM64 Task Force
by Luke Iannini 11 Aug '14

11 Aug '14

I think I've solved this particular mystery -- the registers were never defined there because that integer-representation of them is only used by the NCG. In LLVM land they were only ever stringified by the REG() macro. Except now globalRegMaybe is being used in CmmSink.hs (as Simon and Ben were discussing), and globalRegMaybe needs an integer value for each register to put into its Maybe RealReg return value. Since CmmSink.hs only checks 'isJust', it doesn't actually matter what the integer value is. So I've just gone ahead and defined them sequentially for now which seems to get me past this. Thanks! Luke On Sat, Aug 9, 2014 at 4:22 AM, Karel Gardas <karel.gardas(a)centrum.cz> wrote: > On 08/ 9/14 05:27 AM, Luke Iannini wrote: > >> Hi Karel, >> Thanks! >> >> A question: >> https://git.haskell.org/ghc.git/commitdiff/454b34cb3b67dec21f023339c4d53d >> 734af7605d >> adds references to s16, s17, s18, s19, d10 and d11 but I don't see those >> > > Yes, that adds FPU support for ARM. > > > where I though to expect them in >> https://github.com/ghc/ghc/blob/master/includes/CodeGen.Platform.hs >> > > Hmm, whole ARM reg set is missing in this file. IIRC Simon Marlow were > discussing this with Ben Gamari recently. I've not investigated if this is > needed or not since I don't know if this is used only in NCG or in > registerised build in general. If the former, ARM will not be there as > there is no ARM NCG yet, if the later, then ARM should be there as > ARM/LLVM/registerised build is a reality. > > Cheers, > Karel >

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Re: [Haskell-iPhone] ARM64 Task Force
by Luke Iannini 09 Aug '14

09 Aug '14

Hi Karel, Thanks! A question: https://git.haskell.org/ghc.git/commitdiff/454b34cb3b67dec21f023339c4d53d73… adds references to s16, s17, s18, s19, d10 and d11 but I don't see those where I though to expect them in https://github.com/ghc/ghc/blob/master/includes/CodeGen.Platform.hs Am I down a wrong path? Luke On Thu, Aug 7, 2014 at 10:58 PM, Karel Gardas <karel.gardas(a)centrum.cz> wrote: > On 08/ 8/14 01:58 AM, Luke Iannini wrote: > >> I'm now studying David's patches to LLVM to learn how to add the >> ARM64/GHC calling convention to LLVM. >> > > Here is also original ARM/GHC calling convention submission. It's always > good to have more examples as reference... > > http://lists.cs.uiuc.edu/pipermail/llvmdev/2011-October/044173.html > > Good luck with the ARM64/GHC porting work! > > Karel >

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ARM64 Task Force
by Luke Iannini 07 Aug '14

07 Aug '14

Howdy all, Would anyone like to team up on getting ARM64 support into GHC? Cheers Luke

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Screwy Float values (Double fine, not rounding errors)
by Murray Campbell 14 Jul '14

14 Jul '14

Hi all, I've been noticing some strange Float behaviour (not rounding errors but totally erroneous values for non-pathological values). It seems to be a manifestation of GHC ticket #9125 which was reported from a Raspberry Pi (arm) version. A quick example: > print (29.0 :: Float) gives > 2109.0 There is more detail at https://ghc.haskell.org/trac/ghc/ticket/9125#comment:1 Has anyone else seen this? I'm running a compiled-from-source-tarball 7.8.3 as I couldn't get past the dreaded 'illegal instruction:4' binary installation bug. Simulator and device behave the same. Thanks.

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Objective C bindings?
by Jake Brownson 25 Apr '14

25 Apr '14

https://code.google.com/p/hoc/ Is anybody aware of any efforts to revive the HOC project that provides Objective-C bindings for Haskell? Or any alternatives to it? It seems like it would be a great complement to the iOS cross compiler. I've started reading through the code to see what it might take to get them working w/ recent GHCs. the last commit on the google code project was 2010. When I do the "runhaskell Setup.hs build" from the installation instructions I get a few things like this: "Unacceptable argument type in foreign declaration: CInt" which seems to be explained by this as due to a change in FFI at some point: http://haskell.1045720.n5.nabble.com/zlib-build-failure-on-recent-GHC-td497… I'm just starting to dig into this so maybe there's a good reason nobody else has. I'm pretty new to Haskell, but I love the idea of making native GUIs for OS X and eventually iOS.

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GHC iOS 7.8.1 RC1 for Device & Simulator
by Luke Iannini 06 Feb '14

06 Feb '14

Hi folks, RC builds of GHC iOS are now ready for devices and the iOS simulator. https://github.com/ghc-ios/ghc-ios-scripts/releases/download/7.8-rc1-device… https://github.com/ghc-ios/ghc-ios-scripts/releases/download/7.8-rc1-simula… You'll find complete instructions on their usage here, including compiling cabal packages: https://github.com/ghc-ios/ghc-ios-scripts/blob/master/README.md Please let me know how it goes! Cheers Luke

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Re: [Haskell-iPhone] ghc-ios 7.8 working build
by Luke Iannini 05 Feb '14

05 Feb '14

Hi Dominick, Awesome. Sounds like everything's working perfectly : ). The 'has no symbols' messages are normal and harmless; I think they can be fixed but in the meantime there is a script in ghc-ios-scripts called "libtool-quiet" that silences them. You can use it by adding -pgmlibtool libtool-quiet to your GHC arguments. The output just goes to the iPhone's console which is normally shown in Xcode when you run, but you can also access it with Apple's "iPhone Configurator" app. https://itunes.apple.com/us/app/apple-configurator/id434433123?mt=12 . (You could also modify the example to return e.g. an Int and put that on the screen with a UILabel or similar -- you can call Haskell from anywhere in your app as long as you've called hs_init at the very beginning. A nice trick is to create an NSObject category with a + (void)load { hs_init(NULL, NULL) } method, which will ensure hs_init is called very early in your program and then you don't have to worry about it anymore.) Thanks so much for testing! Cheers Luke On Wed, Feb 5, 2014 at 10:22 AM, Dominick Samperi <djsamperi(a)gmail.com>wrote: > [Luke: forgot to forward to list, sorry for the duplicates] > > There are two issues: > > 1. When I build Counter.a I see lots of messages from libtool saying > "has no symbols", > for example: > > /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: > for architecture: armv7s file: > > /usr/local/lib/arm-apple-darwin10-ghc-7.8.20140129/rts-1.0/libHSrts_thr.a(Sanity.thr_o) > has no symbols > > 2. I have not (yet) joined the developer program since I have no plans to > deploy > to the app store, so instead I have been following the > instructions here to deploy > to my own device: > > http://www.sysrage.net/guides/ios-programming/building-and-running-ios-appl… > > Following these instructions I am able to copy HaskellCounter (my name for > your test app) to my device, and I see the HaskellCounter icon, but when I > start the app I just see a blank screen. Looking at > > Counter.hs this is not too surprising, as I see no code that would update > the > Single View screen? I'm not sure where the output of putStrLn goes when > an app is run on the device. > > Dominick > > > On Wed, Feb 5, 2014 at 4:27 AM, Luke Iannini <lukexipd(a)gmail.com> wrote: > > Hi Dominick and all, > > > > That's great news! > > > > I've created a README here: > > https://github.com/ghc-ios/ghc-ios-scripts/blob/master/README.md > > > > Note that the binary posted above is only for the device. I'll post the > > simulator version shortly along with instructions on how to create fat > > libraries that contain both simulator and device code. > > > > Please let me know if you have any questions or issues! > > > > Very best > > Luke > > > > > > On Tue, Feb 4, 2014 at 11:35 PM, Dominick Samperi <djsamperi(a)gmail.com> > > wrote: > >> > >> Hello Luke, > >> > >> It installed without problems under Mac OS X Mavericks and reports the > >> version correctly. If there is some documentation that you can point me > to > >> I will test on my simulator and iPhone. > >> > >> Thanks, > >> Dominick > >> > >> > >> On Wed, Feb 5, 2014 at 1:36 AM, Luke Iannini <lukexipd(a)gmail.com> > wrote: > >> > Hi all, > >> > > >> > I believe I've worked around the issues with make binary-dist and > >> > cross-compilation. > >> > > >> > This should be a working binary for iOS devices > >> > > >> > > https://github.com/ghc-ios/ghc-ios-scripts/releases/download/7.8-rc1-device… > >> > > >> > Please try ./configure && make install (it should live happily next to > >> > your > >> > current ghc as arm-apple-darwin10-ghc) and let me know so we can have > a > >> > build ready for 7.8 RC2! > >> > > >> > Cheers > >> > Luke > >> > > >> > _______________________________________________ > >> > ghc-devs mailing list > >> > ghc-devs(a)haskell.org > >> > http://www.haskell.org/mailman/listinfo/ghc-devs > >> > > > > > >

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Re: [Haskell-iPhone] ghc-ios 7.8 working build
by Luke Iannini 05 Feb '14

05 Feb '14

Hi Dominick and all, That's great news! I've created a README here: https://github.com/ghc-ios/ghc-ios-scripts/blob/master/README.md Note that the binary posted above is only for the device. I'll post the simulator version shortly along with instructions on how to create fat libraries that contain both simulator and device code. Please let me know if you have any questions or issues! Very best Luke On Tue, Feb 4, 2014 at 11:35 PM, Dominick Samperi <djsamperi(a)gmail.com>wrote: > Hello Luke, > > It installed without problems under Mac OS X Mavericks and reports the > version correctly. If there is some documentation that you can point me to > I will test on my simulator and iPhone. > > Thanks, > Dominick > > > On Wed, Feb 5, 2014 at 1:36 AM, Luke Iannini <lukexipd(a)gmail.com> wrote: > > Hi all, > > > > I believe I've worked around the issues with make binary-dist and > > cross-compilation. > > > > This should be a working binary for iOS devices > > > https://github.com/ghc-ios/ghc-ios-scripts/releases/download/7.8-rc1-device… > > > > Please try ./configure && make install (it should live happily next to > your > > current ghc as arm-apple-darwin10-ghc) and let me know so we can have a > > build ready for 7.8 RC2! > > > > Cheers > > Luke > > > > _______________________________________________ > > ghc-devs mailing list > > ghc-devs(a)haskell.org > > http://www.haskell.org/mailman/listinfo/ghc-devs > > >

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