March 2002 - Glasgow-haskell-users

How to make Claessen's Refs Ord-able?
by Mike Gunter 07 Apr '02

07 Apr '02

I'd like to extend the Ref type for observable sharing of Koen Claessen's Ph.D. thesis: > import IOExts ( IORef, newIORef, readIORef, writeIORef, unsafePerformIO ) > > newtype Ref a = MkRef (IORef a) > > ref :: a -> Ref a > ref x = MkRef (unsafePerformIO (newIORef x)) > > deref :: Ref a -> a > deref (MkRef r) = unsafePerformIO (readIORef r) > > (<==>) :: Ref a -> Ref a -> Bool > (MkRef ref1) <==> (MkRef ref2) = ref1 == ref2 to make it possible for the Refs to be the keys for efficient finite maps. I.e. I want something with at least an efficient Ord-like compare and maybe also a hash function. The closest I've got is: > type UniqTy = Integer > newtype RefWInt a = RefWInt (UniqTy, a) deriving (Show) > > curUniqInt :: IORef UniqTy > curUniqInt = unsafePerformIO (newIORef 0) > newRef a = do > v <- readIORef curUniqInt > writeIORef curUniqInt (v + 1) > return (v, a) > > refWInt x = RefWInt (unsafePerformIO (newRef x)) which works properly for this program alone: > tri_1 = (a, b, b1) > where a = refWInt "a" > b = refWInt "b" > b1 = refWInt "b" yielding (RefWInt (0,"a"),RefWInt (1,"b"),RefWInt (2,"b")). But if I add another copy of the same definition: > tri_2 = (a, b, b1) > where a = refWInt "a" > b = refWInt "b" > b1 = refWInt "b" and use it by uncommenting the second line here: > main = print tri_1 > -- >> print tri_2 I get: (RefWInt (0,"a"),RefWInt (1,"b"),RefWInt (1,"b")) (RefWInt (0,"a"),RefWInt (1,"b"),RefWInt (1,"b")) with ghc. (I get the desired (RefWInt (0,"a"),RefWInt (1,"b"),RefWInt (2,"b")) (RefWInt (3,"a"),RefWInt (4,"b"),RefWInt (5,"b")) with ghci.) Can I write code to always get the desired behavior? How? thanks, mike

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cygwin32 snapshot available
by Sigbjorn Finne 27 Mar '02

27 Mar '02

Hi, for people wanting to use GHC to compile cygwin applications on Win32, I've made available a binary snapshot of current CVS sources, http://galois.com/~sof/ghc-5.03-20020326-cygwin32.tar.gz It is a bare-bones snapshot (no profiling libs, no interpreter, no docs) & is intended for 'enthusiasts' only. The main purpose for putting it together was to help out anyone wanting to build cygwin versions of the GHC sources, something that's tricky to do using the released versions of GHC. hth --sigbjorn

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Re: GHC for MacOS X binary now available
by Ashley Yakeley 27 Mar '02

27 Mar '02

At 2002-03-22 15:52, Wolfgang Thaller wrote: >A tar.gz file (14.5MB) of GHC for MacOS X is now available for download at: >http://www.foldr.org/Software/Haskell/ghc/ghc-5.03-13032002-MacOSX.tar.gz Do you have 'gcc' installed on your system? It's not there by default on OS X, but your GHC seems to want it. My workaround is to pass these to GHC: -pgmc cc -pgma cc -pgml cc (actually I use $(CC) instead of cc in my Makefile). Consider using 'cc' instead of 'gcc' for default programs. -- Ashley Yakeley, Seattle WA

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Re: GHC for MacOS X binary - ranlib and libgmp
by Ashley Yakeley 27 Mar '02

27 Mar '02

At 2002-03-27 01:26, Wolfgang Thaller wrote: >... and that's probably why libgmp was already installed on my >system, and I never even thought about it. For now, you'll have to >get it from "someplace else"... OK, I'll use the one in the 5.00.2 port. I'm currently attempting to build JVM-Bridge, which uses createAdjustor. I'll let you know how it works out... -- Ashley Yakeley, Seattle WA

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Re: GHC for MacOS X binary now available
by Ashley Yakeley 27 Mar '02

27 Mar '02

At 2002-03-22 15:52, Wolfgang Thaller wrote: >A tar.gz file (14.5MB) of GHC for MacOS X is now available for download at: >http://www.foldr.org/Software/Haskell/ghc/ghc-5.03-13032002-MacOSX.tar.gz You need to run ranlib on a bunch of the libHS*.a files. Also, linking with ghc seems to need libgmp: /usr/bin/ld: table of contents for archive: /usr/local/lib/ghc-5.03/libHSconcurrent.a is out of date; rerun ranlib(1) (can't load from it) /usr/bin/ld: table of contents for archive: /usr/local/lib/ghc-5.03/libHSlang.a is out of date; rerun ranlib(1) (can't load from it) /usr/bin/ld: table of contents for archive: /usr/local/lib/ghc-5.03/libHSlang_cbits.a is out of date; rerun ranlib(1) (can't load from it) /usr/bin/ld: table of contents for archive: /usr/local/lib/ghc-5.03/libHShaskell98.a is out of date; rerun ranlib(1) (can't load from it) /usr/bin/ld: table of contents for archive: /usr/local/lib/ghc-5.03/libHSbase.a is out of date; rerun ranlib(1) (can't load from it) /usr/bin/ld: table of contents for archive: /usr/local/lib/ghc-5.03/libHSbase_cbits.a is out of date; rerun ranlib(1) (can't load from it) /usr/bin/ld: table of contents for archive: /usr/local/lib/ghc-5.03/libHSrts.a is out of date; rerun ranlib(1) (can't load from it) /usr/bin/ld: can't locate file for: -lgmp Doing ranlib was easy, but I'm not sure about -lgmp. Was there supposed to be a libgmp.a included? I notice other ghc versions for MacOS X include a libgmp.a. -- Ashley Yakeley, Seattle WA

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RE: GHC for MacOS X binary now available
by Simon Marlow 25 Mar '02

25 Mar '02

> A tar.gz file (14.5MB) of GHC for MacOS X is now available > for download at: > http://www.foldr.org/Software/Haskell/ghc/ghc-5.03-13032002-Ma > cOSX.tar.gz Thanks; this is now also at http://www.haskell.org/ghc/dist/5.03.20021303/ghc-5.03-13032002-MacOSX.t ar.gz Cheers, Simon

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HC-files for Haskell 5.02
by Ole Tange 22 Mar '02

22 Mar '02

Hmmm.. this was probably for you. Your email address was in the README, but not very obvious on the webpage. /Ole ---------- Forwarded message ---------- Date: Sat, 23 Mar 2002 02:27:30 +0100 (CET) From: Ole Tange <tange(a)tange.dk> To: simonmar(a)microsoft.com Subject: HC-files for Haskell 5.02 On http://www.haskell.org/ghc/docs/5.02/building/sec-booting-from-c.html you write: > If we haven't made them available or you can't find them, please ask. I cannot find them on http://www.haskell.org/ghc/download_ghc_502.html It would be nice if you made 'HC files' in that page a link to the downloadable HC-files (with a short explanation on what HC-files are). /Ole

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GHC for MacOS X binary now available
by Wolfgang Thaller 22 Mar '02

22 Mar '02

A tar.gz file (14.5MB) of GHC for MacOS X is now available for download at: http://www.foldr.org/Software/Haskell/ghc/ghc-5.03-13032002-MacOSX.tar.gz Thanks to Volker Stolz for hosting this. Cheers, Wolfgang -- GMX - Die Kommunikationsplattform im Internet. http://www.gmx.net

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GHC for MacOS X binary version
by Wolfgang Thaller 22 Mar '02

22 Mar '02

I have a 14.5MB tar.gz binary version of GHC for MacOS X on my hard disk. It's based on the CVS version from 13th of March. However, I don't have enough webspace to make it available. Does anyone happen to have some room left for that? (haskell.org? anyone else?) Cheers, Wolfgang

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GHC for MacOS X: Success!
by Wolfgang Thaller 21 Mar '02

21 Mar '02

>I'm attaching my patches. Well, I'm attaching them _now_. Cheers, Wolfgang

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