December 2002 - Glasgow-haskell-users

RPM fails under Mandrake 9.0
by Manuel Garcia Rodriguez 26 Dec '02

26 Dec '02

Hello all. I'm trying to install rmp GHC under Mandrake 9.0, but it fails saying that it depends of libreadline.so.4, and this file exists in /lib, symlinked to libreadline.so.4.3. Sorry, but I'm too newbie, I've try to force installation but same error occurs. Thanks. ___________________________________________________ Yahoo! Sorteos Consulta si tu número ha sido premiado en Yahoo! Sorteos http://loteria.yahoo.es

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Green card 2003 y�l� kay�tlar�m�z ba�lam��t�r.
by G��MENL�K/ABD 26 Dec '02

26 Dec '02

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ext-core Questions
by Ingo Wechsung 21 Dec '02

21 Dec '02

Dear GH Users, I have been using the -fext-core option to generate *.hcr Files. I've also read the document "An External Representationfor the Core Language." There are still some things that confuse me. Firstly, it seems, that Tuples are sometimes represented for example for (a,b) as DataziTuple.Z2T (a) (b) and in other cases as GHCziPrim.Z2H (a) (b). Why is this? Secondly, in GHC produced Core programs, one sees frequently references to intermediate values from other Modules such as SystemziIO.lvl (print newline?) or GHCziNum.lvl1 (which seems to be an Integer constant) or even GHCziNum.a4 (which seems to be (>) :: Integer -> Integer -> Bool). The type of those names as well as any other names from imported Modules is not given, however. How then is it possible to type check a Core program? (For those who are interested in the background of my question: I wondered if it would be possible to translate Core to Perl. Let's say we'd translate all top level values to perl subs. Then I need to know the arity of each top level value to distinguish non-saturated function applications. For example, if we have sub M::foo($$$) { my ($a1, $a2, $a3) = @_; ... } then, if the core code is like "foo a b" the corresponding perl code could be something like sub { my $arg3 = shift; M::foo($a, $b, $arg3); } yielding a reference to an anonymous function that, when applied to another argument, calls foo. However, this can only be done, when the signature of foo is known, which is not the case if foo is imported.) Merry Chrismas Ingo

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RE: Run-time options in ghc on Linux
by Simon Marlow 20 Dec '02

20 Dec '02

> The +RTS options don't seem to be working for me on Linux > (Redhat 7.2, ghc 5.04 and 5.04.1 installed via the .rpms). > > One of my programs will happily consume all available memory, > even though I have +RTS -M64M, and another program fails with > > Stack space overflow: current size 1048576 bytes. > Use `+RTS -Ksize' to increase it. > > even though I'm using +RTS -K10M. Well, it works here... if you say "+RTS -?" does it print the help text? Could you post the exact command lines you're using to compile/link the program, and the command line used to run it? Cheers, Simon

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Run-time options in ghc on Linux
by Garner, Robin 20 Dec '02

20 Dec '02

The +RTS options don't seem to be working for me on Linux (Redhat 7.2, ghc 5.04 and 5.04.1 installed via the .rpms). One of my programs will happily consume all available memory, even though I have +RTS -M64M, and another program fails with Stack space overflow: current size 1048576 bytes. Use `+RTS -Ksize' to increase it. even though I'm using +RTS -K10M. Any suggestions ?

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duplicating handles
by Hal Daume III 18 Dec '02

18 Dec '02

Question about dupTo...you can use it to, for instance, redirect stdout to a file. What if I want to have stuff that is printed to stdout to be redirect to a file *and also* printed to stdout. I fooled around with a few combinations, but nothing seems to work. Please help :) -- Hal Daume III "Computer science is no more about computers | hdaume(a)isi.edu than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume

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Problem with building GHC (CVS version)
by Sean Seefried 18 Dec '02

18 Dec '02

I've just download the latest version of GHC from the CVS archives and I am having quite some difficulty building it on a linux machine (Debian distro) The configure script decided that my machine was a i386-unknown-linux. Here is the output where the error occurs. ....(about a page and a half of _split files) lit Text/Read/Lex_split Text/Regex_split Text/Regex/Posix_split Text/Show_split Text/Show/Functions_split -name '*.p_o') | xargs ar q libHSbase_p.a xargs: ar: terminated by signal 9 make[3]: *** [libHSbase_p.a] Error 125 make[3]: *** Deleting file `libHSbase_p.a' make[2]: *** [all] Error 1 make[1]: *** [all] Error 1 make[1]: Leaving directory `/home/semantix/cvsmods/fptools/libraries' make: *** [build] Error 1 I've noticed that 'ar' was consuming an enormous amount of memory (more than the paltry 128 of my machine), so my computer trashed quite a bit at this point, as it swapped to and from the swap drive. Could this error be due to running out of memory? Sean

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ANNOUNCE: GHC version 5.04.2 released
by Simon Marlow 17 Dec '02

17 Dec '02

============================================================== The (Interactive) Glasgow Haskell Compiler -- version 5.04.2 ============================================================== We are pleased to announce a new patchlevel release of the Glasgow Haskell Compiler (GHC), version 5.04.2. This is a bugfix-only release. For all the changes since 5.02.3, see the release notes: http://www.haskell.org/ghc/docs/latest/users_guide/release-5-04.html How to get it ~~~~~~~~~~~~~ The easy way is to go to the WWW page, which should be self-explanatory: http://www.haskell.org/ghc/ We supply binary builds in the native package format for various flavours of Linux and BSD, and in InstallShield form for Windows folks. Binary builds for other platforms are available as a .tar.gz which can be installed wherever you want. The source distribution is also available from the same place. Once you have the distribution, please follow the pointers in the README file to find all of the documentation about this release. Background ~~~~~~~~~~ Haskell is a standard lazy functional programming language; the current language version is Haskell 98, agreed in December 1998. 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/ Haskell home page http://www.haskell.org/ comp.lang.functional FAQ http://www.cs.nott.ac.uk/~gmh/faq.html System requirements ~~~~~~~~~~~~~~~~~~~ To compile programs with GHC, you need a machine with 64+MB memory, GCC and perl. This release is known to work on the following platforms: * i386-unknown-{linux,*bsd,mingw32} * sparc-sun-solaris2 * alpha-dec-osf3 * powerpc-apple-darwin (MacOS/X) Ports to the following platforms should be relatively easy (for a wunderhacker), but haven't been tested due to lack of time/hardware: * hppa1.1-hp-hpux{9,10} * i386-unknown-solaris2 * mips-sgi-irix{5,6} * {rs6000,powerpc}-ibm-aix The builder's guide on the web site gives a complete run-down of what ports work; it can be found at http://www.haskell.org/ghc/docs/latest/building/building-guide.html 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/ Please report bugs using our SourceForge page at http://sourceforge.net/projects/ghc/ or send them to glasgow-haskell-bugs(a)haskell.org. GHC users hang out on glasgow-haskell-users(a)haskell.org. Bleeding edge CVS users party on cvs-ghc(a)haskell.org.

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by Alessia 17 Dec '02

17 Dec '02

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small problem with ghc(i) on Windows
by Jerzy Karczmarczuk 16 Dec '02

16 Dec '02

I might have done something wrong, but... -- I defined infix 5 # the sharp character is accepted, the definition of the associated procedure as well, the usage a # b works. Apparently the form (#) is considered illegal. It works on my Linux. On Win2000: parse error on input ')' Have you ever seen that? Thank you. Jerzy Karczmarczuk

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