March 2004 - Glasgow-haskell-users

finding C compiler and preprocessor?
by David Roundy 18 Mar '04

18 Mar '04

Hello, Is there any way to find out what C compiler and preprocessor are used by ghc? I've run into problems with a windows user, since the ghc distribution apparently uses a different compiler than the one that my configure script finds, and so the configure script indicates that a certain header file is found, but then the program fails to compile, since ghc doesn't find them. :( The only other option that comes to mind would be to write autoconf macros to check for header files and/or libraries using ghc, but that sounds to me like a real pain. Alternatively, if I could tell ghc which compiler to use, that would work as well, since autoconf is perfectly capable of identifying a working C compiler. I've tried telling autoconf that ghc is my C compiler, but that fails when the user provides a CFLAGS that isn't supported by ghc. One could get around this by prepending -optc to all the CFLAGS (but I haven't figured out how to do this in shell), but then there is still the trouble of trying to convince ghc to preprocess a C file with the C preprocessor. :( Any suggestions would be welcome! -- David Roundy http://www.abridgegame.org

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RE: Release Candidate for 6.2.1 available
by Simon Marlow 18 Mar '04

18 Mar '04

Thanks to Sigbjorn, our long-suffering Windows installer guru, there is a new Windows installer release candidate for 6.2.1 is here: http://www.haskell.org/ghc/dist/stable/dist/ghc-6-2-1.msi Please test. We'd especially like to hear from Win98/WinME users. Also try installing under a directory path with spaces in if you can. Cheers, Simon > -----Original Message----- > From: glasgow-haskell-users-bounces(a)haskell.org > [mailto:glasgow-haskell-users-bounces@haskell.org] On Behalf > Of Sigbjorn Finne > Sent: 12 March 2004 02:32 > To: GHC users > Subject: Re: Release Candidate for 6.2.1 available > > An installer for Windows users can now also be found in > that directory. > > --sigbjorn > > ----- Original Message ----- > From: "Simon Marlow" <simonmar(a)microsoft.com> > To: <glasgow-haskell-users(a)haskell.org> > Sent: Thursday, March 11, 2004 04:43 > Subject: RE: Release Candidate for 6.2.1 available > > > > > > > ghc-6.2.20040304 and later are release candidates for 6.2.1 > > > > > > Get them from here: > > > > > > http://www.haskell.org/ghc/dist/stable/dist/ > > > > This is your last chance to test... I'm going to freeze > the release on > > Monday (15 March). > > > > Cheers, > > Simon > > _______________________________________________ > Glasgow-haskell-users mailing list > Glasgow-haskell-users(a)haskell.org > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users >

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Stack space overflow after optimization
by Christian Maeder 17 Mar '04

17 Mar '04

Hi, my program throws Stack space overflow: current size 1048576 bytes. Use `+RTS -Ksize' to increase it. only when translated with "-O". Is it possible that the next release of ghc uses a higher stack size at least when the "-O" flag is set? (Only to reduce the likelyhood that our users need to supply RTS flags.) Maybe it is even possible to add a ghc flag that allows to set the default Ksize of the generated programs. Someone told me to link in an additional header file, but maybe you can supply a more convienent solution. Christian

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RE: Using -split-objs
by Simon Marlow 17 Mar '04

17 Mar '04

> The ghc users guide contains this helpful advice about split-objs.. > > "don't use it unless you know what you're doing!" > > OK, I admit I don't know what I'm doing. But despite this handicap > I would like to use split-objs to build a library. I've already > discovered it doesn't work with --make, so I guess I have to use > a makefile. > > Are there any other gotchas waiting for me? > Anything else I need to know? You'll probably need special Makefile rules to handle it too. I think you need to make the subdirectory for the objects (M_split/) beforehand, and touch the object file M.o afterward (so that make dependencies still work). Cheers, Simon

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RE: Cygwin binary?
by Simon Peyton-Jones 16 Mar '04

16 Mar '04

GHC runs fine under Cygwin: http://haskell.org/ghc/download_ghc_62.html GHC itself does not require Cygwin, though, thank goodness. Simon | -----Original Message----- | From: glasgow-haskell-users-bounces(a)haskell.org [mailto:glasgow-haskell-users- | bounces(a)haskell.org] On Behalf Of Igor Bukanov | Sent: 15 March 2004 23:06 | To: glasgow-haskell-users(a)haskell.org | Subject: Cygwin binary? | | Hi! | | Is it possible to find GHC cygwin binary for 6.* somewhere? Web searching | reveals only references to 2.* and my attempt to build it from mingw | distribution failed with messages about missed unix modules. | | Thanks in advance, Igor Bukanov | _______________________________________________ | Glasgow-haskell-users mailing list | Glasgow-haskell-users(a)haskell.org | http://www.haskell.org/mailman/listinfo/glasgow-haskell-users

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Sequential codes for LinSolv and Ray Tracer
by Heron 15 Mar '04

15 Mar '04

Hello, a simple question: how can I obtain the sequential code for LinSolv and Ray Tracer programs used in [Loidl, 2000] (see below) ? Is it available on-line ? I have downloaded their parallel GpH versions from http://cvs.haskell.org/cgi-bin/cvsweb.cgi/fptools/nofib/parallel/, but I need their sequential versions. Best Regards, Heron [Loidl, 2000] H.-W. Loidl, U. Klusik, K. Hammond, R. Loogen, and P. rinder. GpH and Eden: Comparing Two Parallel Functional Languages on a Beowulf Cluster. In SFP'00 - Scottish Funct. Progr. Workshop, rends in Functional Programming, Vol. 2, pages 39-52. Intellect, 2000. http://citeseer.ist.psu.edu/loidl00gph.html

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Cygwin binary?
by Igor Bukanov 15 Mar '04

15 Mar '04

Hi! Is it possible to find GHC cygwin binary for 6.* somewhere? Web searching reveals only references to 2.* and my attempt to build it from mingw distribution failed with messages about missed unix modules. Thanks in advance, Igor Bukanov

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Using -split-objs
by Adrian Hey 15 Mar '04

15 Mar '04

Hello, The ghc users guide contains this helpful advice about split-objs.. "don't use it unless you know what you're doing!" OK, I admit I don't know what I'm doing. But despite this handicap I would like to use split-objs to build a library. I've already discovered it doesn't work with --make, so I guess I have to use a makefile. Are there any other gotchas waiting for me? Anything else I need to know? Thanks -- Adrian Hey

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type problem
by MR K P SCHUPKE 15 Mar '04

15 Mar '04

Is there any way to insist that two types are different? For example f :: NotSame a b => a -> b Regards, Keean Schupke.

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RE: Release Candidate for 6.2.1 available
by Simon Marlow 14 Mar '04

14 Mar '04

> ghc-6.2.20040304 and later are release candidates for 6.2.1 > > Get them from here: > > http://www.haskell.org/ghc/dist/stable/dist/ This is your last chance to test... I'm going to freeze the release on Monday (15 March). Cheers, Simon

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