- Glasgow-haskell-users

Building GHC 5.02.3 from bootstrap.
by Thomas L. Bevan 03 May '02

03 May '02

Hi all, In spite of all the warnings, I tried to build ghc 5.02.3 from scratch. The first step, > ./distrib/hc-build returned the error >make[1]: *** No rule to make target `Addr.o', needed by `libHSlang.a'. Stop. >make: *** [all] Error 1 I'm actually building on a standard Linux x86 platform. The resaon I want to build from scratch is to incorporate GHC into the portage source tree for the Gentoo distribution, http://www.gentoo.org Tom

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infix type constructors
by Okasaki, C. DR EECS 03 May '02

03 May '02

I'm not sure how long this has been implemented in GHC, but I just noticed that infix type constructors are allowed, as in data a :- b = ... The syntactic asymmetry between type constructors and data contructors has bothered me for a while, so this is a welcome change! However, this syntax seems to be supported for "data" and "newtype" declarations, but not for "type" declarations. For example, type a :- b = ... does not seem to be allowed. Is there a reason for this? Or was it just an oversight? -- Chris

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RE: Building GHC 5.02.3 from bootstrap.
by Simon Marlow 03 May '02

03 May '02

> In spite of all the warnings, I tried to build ghc 5.02.3 > from scratch. > The first step, > > ./distrib/hc-build > returned the error > >make[1]: *** No rule to make target `Addr.o', needed by > `libHSlang.a'. Stop. > >make: *** [all] Error 1 hmm, do you have Addr.hc in hslibs/lang? > I'm actually building on a standard Linux x86 platform. The > resaon I want to > build from scratch is to incorporate GHC into the portage > source tree for > the Gentoo distribution, http://www.gentoo.org The way I'm doing this for the FreeBSD port now is to have the build process download a pre-built cut-down binary distribution of GHC purely for bootstrapping. We used to bootstrap from .hc files in the ports tree but after a while it was just too fragile and hard to get right. Cheers, Simon

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Porting guide
by Simon Marlow 02 May '02

02 May '02

Hi Folks, I've just updated the Building Guide to include a section on porting GHC to a new platform. Please take a look: http://www.haskell.org/ghc/docs/latest/building/sec-porting-ghc.html Disclaimer: I haven't actually followed the steps in doing an unregisterised bootstrap from beginning to end, so there's sure to be some inaccuracies in there. Cheers, Simon

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last result in ghci
by Serge D. Mechveliani 02 May '02

02 May '02

Dear GHC, Do you provide in your interactive system a denotation for the last result? (`:?' command does not show it). For example, Prelude> 1 1 Prelude> % + 1 2 ... ----------------- Serge Mechveliani mechvel(a)botik.ru

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RE: profiling crashes my code
by Simon Peyton-Jones 02 May '02

02 May '02

| Okay, I've only just toyed with profiling myself, but one | observation I've made is that it's not a good idea to mix | modules compiled with profiling and modules compiled without. | | That is, always 'make clean' (i.e. 'rm -f *.o *.hi') before | you build with a new set of options. Absolutely. GHC should complain if you mix profiled and non-profiled code but it currently doesn't. You'll certainly get disaster if you mix them. (The format of heap objects changes.) I bet that's your problem. S

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profiling crashes my code
by Hal Daume III 02 May '02

02 May '02

I'm in a profiling kind of mood (read: am sick of my program taking too long to run), but when I ghc with -prof -auto-all (or -auto or whatever), when I try to run my program it seg faults. I don't want to attach all the code, since it's really long, but I *have* tested profiling on smaller programs and it works fine. (Note that the program crashes regardless of whether I put +RTS -p or not.) Here are some "unusual" things I'm doing; hopefully someone will be able to say "oh, there's your problem": - using the ghc binary package (which using FastMutInt -- I don't really know what this does, but it looks scary) - i'm only compiling the main program with profiling -- it imports a whole lot of modules which are compiled with -O2, including binary which is compiled using -cpp also - i use the Word8 type extensively - i use unsafePerformIO (but only once per run of the code) - i use UArray Int Double (i think this also uses upIO) - uhm...i do a lot of file io :) That's all I can think of at the moment. It dies regarless of whether I use -O, -O2, or neither... -- 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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problems with ld
by Hal Daume III 01 May '02

01 May '02

This isn't a ghc specific question as I've just found a similar problem with gcc, but I was hoping someone here could lend me a hand...I recently installed RedHat 7.2 on my x86 laptop and then immediately installed ghc 5.02.3 from rpm. Compilation works fine as does interpretation but linking doesn't and it seems to be a problem with ld. It complains "/usr/bin/ld: cannot find -lc". A similar thing happens in C, except in that ld cannot find -lc. I'm wondering if anyone has any idea what this means and how to fix it (I'm not a *nix hacker by any means). I've attached outputs from ghc and gcc when run with -v; the important error is at the very bottom. The test programs where, for haskell, "main = print 5" and for c "int main() { printf("Hello world"); }". Thanks for any help! - Hal -- 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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profiling (again)
by Hal Daume III 01 May '02

01 May '02

i'm using ghc 5.02.1 for sparc solaris -- 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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RE: No NoFib
by Simon Marlow 01 May '02

01 May '02

> I can't find a tarred up release of the NoFib suite, I can only find > it in the CVS repository. Is this intentional? > > The link from GHC's home page points to a very old page at Glasgow > which doesn't give a link to the software. (Perhaps the link in the > paper still works - I haven't tried). We haven't done releases of the NoFib suite for a long time - there doesn't seem to be a need now you can get the sources from CVS. We generally tag NoFib at the same time as a GHC release, so to get the NoFib sources that correspond to GHC 5.02.3, for example, 'cvs co -rghc-5-02-3 nofib'. Cheers, Simon

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