April 2009 - Glasgow-haskell-users

Problem installing GHC 6.10.2 on Debian Etch
by Daniel van den Eijkel 16 Apr '09

16 Apr '09

Hi I am trying to install GHC-6.10.2 on Debian Etch and I get the following error: /usr/bin/strip: /usr/local/lib/ghc-6.10.2/ghc-pkg: File format not recognized Does anybody know this issue? I would be happy to get some help. daniel P.S.: I downloaded the file ghc-6.10.2-x86_64-unknown-linux-libedit2.tar.bz2 and run the following commands: CONFIGURE $ ./configure --prefix=/usr/local checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking target system type... x86_64-unknown-linux-gnu Which we'll further canonicalise into: x86_64-unknown-linux checking for path to top of build tree... /home/daniel/uploaded/ghc-6.10.2 checking for perl... /usr/bin/perl checking if your perl works in shell scripts... yes checking for a BSD-compatible install... /usr/bin/install -c checking whether ln -s works... yes checking for ar... /usr/bin/ar checking whether /usr/bin/ar is GNU ar... yes checking for ar arguments... q checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking whether ranlib is needed... no checking for sed... /bin/sed checking version of gcc... 4.1.2 checking how to run the C preprocessor... gcc -E checking for extra options to pass gcc when compiling via C... -fwrapv -mno-omit-leaf-frame-pointer -fno-unit-at-a-time configure: creating ./config.status config.status: creating Makefile-vars config.status: creating extra-gcc-opts **************************************************** Configuration done, ready to 'make install' (see README and INSTALL files for more info.) **************************************************** MAKE INSTALL: $ make install /home/daniel/uploaded/ghc-6.10.2/utils/mkdirhier/mkdirhier /usr/local/bin /home/daniel/uploaded/ghc-6.10.2/utils/mkdirhier/mkdirhier /usr/local/lib/ghc-6.10.2 echo "[]" > /usr/local/lib/ghc-6.10.2/package.conf make -C includes install DOING_BIN_DIST=YES make[1]: Entering directory `/home/daniel/uploaded/ghc-6.10.2/includes' /home/daniel/uploaded/ghc-6.10.2/utils/mkdirhier/mkdirhier /usr/local/lib/ghc-6.10.2/include for i in Block.h Bytecodes.h ClosureMacros.h Closures.h ClosureTypes.h Cmm.h config.h Constants.h DerivedConstants.h DNInvoke.h Dotnet.h FileLock.h ghcconfig.h GHCConstants.h GranSim.h Hooks.h HsFFI.h ieee-flpt.h InfoTables.h Linker.h Liveness.h MachDeps.h MachRegs.h OSThreads.h Parallel.h Regs.h RtsAPI.h RtsConfig.h RtsExternal.h RtsFlags.h Rts.h RtsMessages.h RtsTypeable.h RtsTypes.h SchedAPI.h Signals.h SMPClosureOps.h SMP.h SpinLock.h Stable.h StgDLL.h StgFun.h Stg.h StgLdvProf.h StgMiscClosures.h StgProf.h StgTypes.h STM.h Storage.h TailCalls.h TickyCounters.h TSO.h ghcautoconf.h ghcplatform.h; do \ /usr/bin/install -c -m 644 $i /usr/local/lib/ghc-6.10.2/include; \ done make[1]: Leaving directory `/home/daniel/uploaded/ghc-6.10.2/includes' make -C utils install DOING_BIN_DIST=YES make[1]: Entering directory `/home/daniel/uploaded/ghc-6.10.2/utils' ------------------------------------------------------------------------ == Recursively making `install' in mkdirhier hp2ps parallel unlit ... PWD = /home/daniel/uploaded/ghc-6.10.2/utils ------------------------------------------------------------------------ ------------------------------------------------------------------------ == make install -w; in /home/daniel/uploaded/ghc-6.10.2/utils/mkdirhier ------------------------------------------------------------------------ make[2]: Nothing to be done for `install'. Finished making install in mkdirhier: 0 ------------------------------------------------------------------------ == make install -w; in /home/daniel/uploaded/ghc-6.10.2/utils/hp2ps ------------------------------------------------------------------------ /home/daniel/uploaded/ghc-6.10.2/utils/mkdirhier/mkdirhier /usr/local/bin for i in hp2ps ; do \ /usr/bin/install -c -m 755 -m 755 $i /usr/local/bin ; \ if test "" = "1"; then \ sh /mk/fix_install_names.sh /usr/local/lib/ghc-6.10.2 /usr/local/bin/$i ; \ fi ; \ done Finished making install in hp2ps: 0 ------------------------------------------------------------------------ == make install -w; in /home/daniel/uploaded/ghc-6.10.2/utils/parallel ------------------------------------------------------------------------ make[2]: Nothing to be done for `install'. Finished making install in parallel: 0 ------------------------------------------------------------------------ == make install -w; in /home/daniel/uploaded/ghc-6.10.2/utils/unlit ------------------------------------------------------------------------ /home/daniel/uploaded/ghc-6.10.2/utils/mkdirhier/mkdirhier /usr/local/lib/ghc-6.10.2 for i in unlit; do \ /usr/bin/install -c -m 755 -m 755 $i /usr/local/lib/ghc-6.10.2; \ if test "" = "1"; then \ sh /mk/fix_install_names.sh /usr/local/lib/ghc-6.10.2 /usr/local/lib/ghc-6.10.2/`basename $i` ; \ fi ; \ done Finished making install in unlit: 0 ------------------------------------------------------------------------ == Finished making `install' in mkdirhier hp2ps parallel unlit ... PWD = /home/daniel/uploaded/ghc-6.10.2/utils ------------------------------------------------------------------------ make -C ghc-pkg install make[2]: Entering directory `/home/daniel/uploaded/ghc-6.10.2/utils/ghc-pkg' /home/daniel/uploaded/ghc-6.10.2/utils/installPackage/install-inplace/bin/installPackage install \ '/home/daniel/uploaded/ghc-6.10.2/utils/ghc-pkg/dist-install/build/ghc-pkg/ghc-pkg' \ '/usr/local/lib/ghc-6.10.2/package.conf' \ '' '/usr/local' \ '/usr/local' '/usr/local/bin' '/usr/local/lib/ghc-6.10.2' \ '/usr/local/lib/ghc-6.10.2' '' '/usr/local/lib/ghc-6.10.2' \ '/usr/local/share/doc/ghc' '/usr/local/share/doc/ghc' '' \ --distpref dist-install \ --enable-shell-wrappers Installing executable(s) in /usr/local/bin /usr/bin/strip: /usr/local/lib/ghc-6.10.2/ghc-pkg: File format not recognized make[2]: *** [install] Error 1 make[2]: Leaving directory `/home/daniel/uploaded/ghc-6.10.2/utils/ghc-pkg' make[1]: *** [install.ghc-pkg] Error 2 make[1]: Leaving directory `/home/daniel/uploaded/ghc-6.10.2/utils' make: *** [install] Error 2 SOME CHECKS $ ghc --version The Glorious Glasgow Haskell Compilation System, version 6.6 $ ghc-pkg --version GHC package manager version 6.6 $ uname -msr Linux 2.6.18-6-amd64 x86_64

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bug: unstable myThreadId in GHC 6.6.1
by Bulat Ziganshin 16 Apr '09

16 Apr '09

Hello glasgow-haskell-users, i've looked for this bug in Trac but don't found anything. so: startGUI action = runInBoundThread $ do unsafeInitGUIForThreadedRTS myThreadId >>= writeIORef guiThread action >>= widgetShowAll mainGUI guiThread = unsafePerformIO$ newIORef$ error "undefined GUI::guiThread" Later in the same thread i ask for myThreadId and get different value. interesting that value returned in startGUI is 23 while later values are about 7000. probably this reflects total amount of threads created so far so that's the problem. Win API call returns constant thread number (that looks natural since the thread is bound). so either: 1) it's feature - please mention this in docs 2) it was fixed since 6.6.1 3) we need full-scale bugreport using 6.10.2 -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com

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GHC on AIX
by nitralime 15 Apr '09

15 Apr '09

Hi, I'm new to GHC (and Haskell). I have tried to install the newest available binary distribution of GHC for AIX which is GHC version 6.8.2. Unfortunately, it didn't work properly. Following the trivial installation steps as described in INSTALL file I executed the following commands: 1) ./configure --prefix=/home/nik/local 2) gmake install But I got the following error message: ------------------------------ -------------------------------------------------------------------------------------------------------- .... Reading package info from stdin ... done. warning: can't find GHCi lib HSrts.o Saving old package config file... done. Writing new package config file... done. /tmp/ghc-6.8.2/utils/mkdirhier/mkdirhier /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2 for i in libHSrts*.a ; do \ case $i in \ *.a) \ /tmp/ghc-6.8.2/install-sh -c -m 644 $i /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2; \ : /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2/`basename $i` ;; \ *.dll) \ /tmp/ghc-6.8.2/install-sh -c -m 644 -s $i /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2 ;; \ *.so) \ /tmp/ghc-6.8.2/install-sh -c -m 755 $i /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2 ;; \ *.dylib) \ /tmp/ghc-6.8.2/install-sh -c -m 755 $i /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2; \ install_name_tool -id /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2/`basename $i` /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2/`basename $i` ;; \ *) \ /tmp/ghc-6.8.2/install-sh -c -m 644 $i /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2; \ esac; \ done gmake[1]: Leaving directory `/tmp/ghc-6.8.2/rts' gmake -C libraries install DOING_BIN_DIST=YES gmake[1]: Entering directory `/tmp/ghc-6.8.2/libraries' if ifBuildable/ifBuildable base; then \ cd base && \ ../installPackage/installPackage '/tmp/ghc-6.8.2/utils/ghc-pkg/ghc-pkg.bin' '/home/nik/local/ghc-6.8.2/lib/ghc-6.8.2/package.conf' '/home/nik/local/ghc-6.8.2' '/home/nik/local/ghc-6.8.2' '/home/nik/local/ghc-6.8.2/bin' '/home/nik/local/ghc-6.8.2/lib/ghc-6.8.2/lib' '/home/nik/local/ghc-6.8.2/lib/ghc-6.8.2/lib' '/home/nik/local/ghc-6.8.2/share/ghc-6.8.2' '/home/nik/local/ghc-6.8.2/share/doc/ghc/libraries/$pkg' '/home/nik/local/ghc-6.8.2/share/doc/ghc/libraries/$pkg' '/home/nik/local/ghc-6.8.2/share/doc/ghc/libraries/$pkg' ; \ fi Installing: /home/nik/local/ghc-6.8.2/lib/ghc-6.8.2/lib/base-3.0.1.0 gmake[1]: *** [install.library.base] Error 127 gmake[1]: Leaving directory `/tmp/ghc-6.8.2/libraries' gmake: *** [install] Error 2 -------------------------------------------------------------------------------------------------------------------------------------- Am I missing something? Any help is very much appreciated! Regards Nik PS: I have originally posted to Haskell-cafe mailing list that was obviousely not the right place for my question!!

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Re[2]: [Haskell-cafe] GHC including System.Time but not Data.Time?
by Bulat Ziganshin 15 Apr '09

15 Apr '09

Hello John, Wednesday, April 15, 2009, 5:35:00 PM, you wrote: > I agree. Is there any chance of 6.10.3 reverting the change? both 6.6 and 6.8 had last releases at spring, so i don't expect new 6.10.* at all -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com

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where is ghcautoconf.h, DerivedConstants.h and GHCConstants.h
by Jake L 14 Apr '09

14 Apr '09

following wiki to make an unregistered build of ghc 6.6.1 on openbsd-powerpc-current target = powerpc_unknown_openbsd host = x86_64_unknown_linux with ghc-6.10.2 "Copy <T>/includes/ghcautoconf.h, <T>/includes/DerivedConstants.h, and <T>/includes/GHCConstants.h to <H>/includes. Note that we are building on the host machine, using the target machine's configuration files. This is so that the intermediate C files generated here will be suitable for compiling on the target system." looking in the target tree after doing ./configure --enable-hc-boot --enable-hc-boot-unregisterised those 3 files doesn't exist, what step am I missing? Jake

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RE: [Haskell] deriving Show for GADT?
by Simon Peyton-Jones 14 Apr '09

14 Apr '09

Yes, indeed, see http://hackage.haskell.org/trac/ghc/ticket/3012 Incidentally, the main Haskell list isn't the right place for GHC-specific questions. glasgow-haskell-users(a)haskell.org is the place Simon | -----Original Message----- | From: haskell-bounces(a)haskell.org [mailto:haskell-bounces@haskell.org] On Behalf Of | Norman Ramsey | Sent: 14 April 2009 05:28 | To: haskell(a)haskell.org | Subject: [Haskell] deriving Show for GADT? | | I've got a fairly large GADT for which I wished to use | deriving (Show) | but I got a mysterious error message: | | Exp.hs:13:11: | Can't make a derived instance of `Show (Exp a)' | (`Exp' has non-Haskell-98 constructor(s)) | In the data type declaration for `Exp' | | | This is from GHC. Does anybody know a compiler option or other trick | that will coax the compiler into producing a Show instance. | (I know I can write one by hand, but I'd rather not bother.) | | | Norman | _______________________________________________ | Haskell mailing list | Haskell(a)haskell.org | http://www.haskell.org/mailman/listinfo/haskell

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GHC threading bug in QSem
by Neil Mitchell 08 Apr '09

08 Apr '09

Hi I believe the following program should always print 100: import Data.IORef import Control.Concurrent main = do sem <- newQSem (-99) r <- newIORef 0 let incRef = atomicModifyIORef r (\a -> (a+1,a)) sequence_ $ replicate 100 $ forkIO $ incRef >> signalQSem sem waitQSem sem v <- readIORef r print v Unfortunately, it doesn't seem to. Running on a 2 processor machine, with +RTS -N3 I usually get 100, but have got answers such as 49, 82, 95. With +RTS -N2 it doesn't seem to fail, but it does with -N4. This is using GHC 6.10.2 on Windows. Using GHC 6.8.3, I get answers /= 100 roughly every other time. >From reading the implementation of QSem, it doesn't seem that negative availability was considered. I think it would be need to be changed as: -- Invariant: avail >= 1 ==> null blocked waitQSem :: QSem -> IO () waitQSem (QSem sem) = do (avail,blocked) <- takeMVar sem -- gain ex. access if avail > 0 then putMVar sem (avail-1,[]) else do block <- newEmptyMVar putMVar sem (avail, blocked++[block]) -- changed line takeMVar block signalQSem :: QSem -> IO () signalQSem (QSem sem) = do (avail,blocked) <- takeMVar sem -- changed below if null blocked || avail < 0 then putMVar sem (avail+1,blocked) else putMVar sem (avail, tail blocked) putMVar (head blocked) () Writing parallel code is hard, so I could have easily got this wrong. I haven't looked at QSemN, which may need similar fixes (or may already deal with this) Thanks Neil

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Re: ANNOUNCE: GHC version 6.10.2
by Benjamin L.Russell 05 Apr '09

05 Apr '09

On Wed, 1 Apr 2009 18:48:13 -0700, Lyle Kopnicky <lists(a)qseep.net> wrote: >Great! But what happened to the time package? It was in 6.10.1. Has it been >intentionally excluded from 6.10.2? Then I should probably hold off on installing the new version for now. Any estimate on when this problem will be fixed? -- Benjamin L. Russell -- Benjamin L. Russell / DekuDekuplex at Yahoo dot com http://dekudekuplex.wordpress.com/ Translator/Interpreter / Mobile: +011 81 80-3603-6725 "Furuike ya, kawazu tobikomu mizu no oto." -- Matsuo Basho^

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doCorePass
by Colin Paul Adams 01 Apr '09

01 Apr '09

Between 6.8 and 6.11, function doCorePass in module SimplCore has changed types from: CoreToDo -> HscEnv -> UniqSupply -> RuleBase -> ModGuts -> IO (SimplCount, ModGuts) to: CorePass (== CoreToDo) -> ModGuts -> CoreM ModGuts and it isn't easy for me to figure out the relationship between the two types. Is there some sort of formula I can follow to convert a function with the first type to the second? -- Colin Adams Preston Lancashire

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ANNOUNCE: GHC version 6.10.2
by Ian Lynagh 01 Apr '09

01 Apr '09

============================================================== The (Interactive) Glasgow Haskell Compiler -- version 6.10.2 ============================================================== The GHC Team is pleased to announce a new patchlevel release of GHC. This release contains a number of bugfixes relative to 6.10.1, including some performance fixes, so we recommend upgrading. Release notes are here: http://haskell.org/ghc/docs/6.10.2/html/users_guide/release-6-10-2.html How to get it ~~~~~~~~~~~~~ The easy way is to go to the web page, which should be self-explanatory: http://www.haskell.org/ghc/ We supply binary builds in the native package format for many platforms, and the source distribution is available from the same place. Packages will appear as they are built - if the package for your system isn't available yet, please try again later. Background ~~~~~~~~~~ Haskell is a standard lazy functional programming language; the current language version is Haskell 98, agreed in December 1998 and revised December 2002. GHC is a state-of-the-art programming suite for Haskell. Included is an optimising compiler generating good code for a variety of platforms, together with an interactive system for convenient, quick development. The distribution includes space and time profiling facilities, a large collection of libraries, and support for various language extensions, including concurrency, exceptions, and foreign language interfaces (C, whatever). GHC is distributed under a BSD-style open source license. A wide variety of Haskell related resources (tutorials, libraries, specifications, documentation, compilers, interpreters, references, contact information, links to research groups) are available from the Haskell home page (see below). On-line GHC-related resources ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Relevant URLs on the World-Wide Web: GHC home page http://www.haskell.org/ghc/ GHC developers' home page http://hackage.haskell.org/trac/ghc/ Haskell home page http://www.haskell.org/ Supported Platforms ~~~~~~~~~~~~~~~~~~~ The list of platforms we support, and the people responsible for them, is here: http://hackage.haskell.org/trac/ghc/wiki/Contributors Ports to other platforms are possible with varying degrees of difficulty. The Building Guide describes how to go about porting to a new platform: http://hackage.haskell.org/trac/ghc/wiki/Building Developers ~~~~~~~~~~ We welcome new contributors. Instructions on accessing our source code repository, and getting started with hacking on GHC, are available from the GHC's developer's site run by Trac: http://hackage.haskell.org/trac/ghc/ Mailing lists ~~~~~~~~~~~~~ We run mailing lists for GHC users and bug reports; to subscribe, use the web interfaces at http://www.haskell.org/mailman/listinfo/glasgow-haskell-users http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs There are several other haskell and ghc-related mailing lists on www.haskell.org; for the full list, see http://www.haskell.org/mailman/listinfo/ Some GHC developers hang out on #haskell on IRC, too: http://www.haskell.org/haskellwiki/IRC_channel Please report bugs using our bug tracking system. Instructions on reporting bugs can be found here: http://www.haskell.org/ghc/reportabug

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