- Glasgow-haskell-users

memory in --make
by S.D.Mechveliani 26 Apr '01

26 Apr '01

Hello, It occurs that ghc-5.00 --make spends the memory in a particular way. Making my project via Makefile (envoking ghc driver many times) succeeds within -M29m. While ghc --make ... -Mxxx Mk.hs needs more than 50Mb, probably, because it keeps much intermediate information between compiling the modules. Still I managed to `make' it with -M29m by issueing the latter command two times more, after the insufficient-heap break. ghc --make still looks faster and better to arrange. Each time it compiles only remainging modules. Maybe, something can be done to avoid these heap-exhausted breaks? For, seeing that some modules remain to compile and heap is exhausted, ghc can save the intermediate information to disk giving the room for the next module compilation. Also it can restart the driver itself - with appropriate message - ? ----------------- Serge Mechveliani mechvel(a)botik.ru

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haskell.runtime.* ??
by Kwanghoon Choi 25 Apr '01

25 Apr '01

Hello, I managed to restore an option for GHC 5.00 to produce java output but I realized that I also need some runtime system to run the java program produced by GHC. I examined the GHC source tree and the GHC website but in vain. Where do I get the runtime system? Thanks in advance. Kwanghoon

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RE: -make
by Simon Marlow 25 Apr '01

25 Apr '01

> I have two questions on ghc-5.00 -make. > > The User's Guide says in Section 4.5 that it is simpler to use > -make than the Makefile technique. > > 1. I try ghc -make Main.hs > > with Main.hs containing main = putStr "hello\n" > > (in ghc-5.00, binary, i386-unknown, Linux), > and it reports > ghc-5.00: unrecognised flag: -make > - ? The flag is actually '--make' (note the double dash). Apparently the documentation system has some problems rendering the double dash in printed mode. > 2. How to simplify (eliminate?) Makefile. > ----------------------------------------- > > My project has many .hs files in the directories > ./source/ > ./source/auxil/ > ./source/pol/factor/ > ... > `make ...' compiles them putting .hi, .o files into ./export/, > then, applies `ar' to make .a library. > To do all this, Makefile includes the rules like > > .hs.o: > $(HC) -c $< $(HCFlags) > > and applies the compiler $(HC) with the flags > > ... -syslib data -recomp ... > -i$(E) -odir $(E) -ohi $(E)/$(notdir $*).hi $($*_flags) > ... > Now, this Makefile does not work under ghc-5.00, because second > compilation cannot find .hi file of the first compilation: > > ..ghc -c source/auxil/Prelude_.hs -fglasgow-exts ... > -recomp -iexport -odir export -ohi export/Prelude_.hi > +RTS -G3 -F1.5 -M29m -RTS -Onot > ... > ..ghc -c source/parse/Iparse_.hs -fglasgow-exts ... > -recomp -iexport -odir export -ohi export/Iparse_.hi > +RTS -G3 -F1.5 -M29m -RTS -Onot > > source/parse/Iparse_.hs:20: > failed to load interface for `Prelude_': > Bad interface file: export/Iparse_.hi > does not exist This is indeed a bug: -ohi doesn't work properly in 5.00. I'm fixing it right now. > Also what -make can do to replace some large part of Makefile. > For > (a) Makefile has rather odd language, it is not good to force the > functional programmer to look into it, > (b) one has to think of Makefile versions for different operation > systems. The simplest way to work is to put the objects and .hi files in the same directory as the source. Then you can use --make like this: $ ghc --make -i<dir1>:<dir2>:... Main to put the objects in a single directory, you can use -odir <dir>. Unfortunately the .hi files can't be saved elsewhere when using --make. Cheers, Simon

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RE: Why does --make only allow one module?
by Simon Marlow 25 Apr '01

25 Apr '01

> ghc --make would be wonderful for UniForM, which at the > moment consists of > a large selection of libraries, were it not for the restriction that > ghc --make insists on only having one module as an argument. Er why? > At this rate I shall be driven to writing an otherwise useless module > which imports all the modules in each directory, since ghc --make does > indeed look a lot faster than compiling each module individually. > (In particular, we win big here, I think because the NFS system is > very inefficient and makes reading all the .hi files very expensive.) > > Actually I'd like to just give ghc --make a list of ALL the > source files > and let it figure out the dependencies. This could also include > object files (compiled from C) which were to be linked in, > for example. It's something we'd like to do, but haven't got around to yet. Perhaps for 5.01. Cheers, Simon

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RE: -optCrts-M28m
by Simon Marlow 25 Apr '01

25 Apr '01

> Could ghc-5.00 explain, please, some changes in the compiler and > RTS options? > > 1. -hi-diffs worked in ghc-4.08 and now does not. It's now called -ddump-hi-diffs. Cheers, Simon

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RE: make maintainer-clean (was: Re: The (Interactive) Glasgow Haskell Compiler -- version 5.00)
by Simon Marlow 25 Apr '01

25 Apr '01

> erm, not that I say, sticking to the standards is mandatory, but... ;) > > $ info standards 'Managing Releases' 'Makefile Conventions' > 'Standard Targets' > [...] > The reason we say "almost everything" is that running the command > `make maintainer-clean' should not delete `configure' even if > `configure' can be remade using a rule in the Makefile. More > generally, `make maintainer-clean' should not delete > anything that > needs to exist in order to run `configure' and then > begin to build > the program. This is the only exception; > `maintainer-clean' should > delete everything else that can be rebuilt. > [...] > > > There should be an additional target, e.g. "make cvs-clean", or > similar. Oh blimey. Ok, I'll make it not delete configure. Cheers, Simon

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-make
by S.D.Mechveliani 25 Apr '01

25 Apr '01

Hello, I have two questions on ghc-5.00 -make. The User's Guide says in Section 4.5 that it is simpler to use -make than the Makefile technique. 1. I try ghc -make Main.hs with Main.hs containing main = putStr "hello\n" (in ghc-5.00, binary, i386-unknown, Linux), and it reports ghc-5.00: unrecognised flag: -make - ? 2. How to simplify (eliminate?) Makefile. ----------------------------------------- My project has many .hs files in the directories ./source/ ./source/auxil/ ./source/pol/factor/ ... `make ...' compiles them putting .hi, .o files into ./export/, then, applies `ar' to make .a library. To do all this, Makefile includes the rules like .hs.o: $(HC) -c $< $(HCFlags) and applies the compiler $(HC) with the flags ... -syslib data -recomp ... -i$(E) -odir $(E) -ohi $(E)/$(notdir $*).hi $($*_flags) ... Now, this Makefile does not work under ghc-5.00, because second compilation cannot find .hi file of the first compilation: ..ghc -c source/auxil/Prelude_.hs -fglasgow-exts ... -recomp -iexport -odir export -ohi export/Prelude_.hi +RTS -G3 -F1.5 -M29m -RTS -Onot ... ..ghc -c source/parse/Iparse_.hs -fglasgow-exts ... -recomp -iexport -odir export -ohi export/Iparse_.hi +RTS -G3 -F1.5 -M29m -RTS -Onot source/parse/Iparse_.hs:20: failed to load interface for `Prelude_': Bad interface file: export/Iparse_.hi does not exist Also what -make can do to replace some large part of Makefile. For (a) Makefile has rather odd language, it is not good to force the functional programmer to look into it, (b) one has to think of Makefile versions for different operation systems. Thank you in advance for the help. ----------------- Serge Mechveliani mechvel(a)botik.ru

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HINSTANCE from main()
by vince koch 24 Apr '01

24 Apr '01

Axel - While browising FAQs and message boards I found a question you had posted a few months ago. I decided to write you in case you had not learned the answer yet. (I remember this answer was pretty tough to find when I needed it!) =========================================================================== Hi all, I tried to write a Win32 program in with GHC 4.05 but I am stumbeling over the definition type WNDCLASS = (ClassStyle, -- style HINSTANCE, -- hInstance MbHICON, -- hIcon MbHCURSOR, -- hCursor MbHBRUSH, -- hbrBackground MbLPCSTR, -- lpszMenuName ClassName) -- lpszClassName which looks fine if I'd knew where to get hInstance. main doesn't give it to me. Can specify something like winMain hInstance ... = as my main program entry? Or a more sensible question: Is there any userguide on how to use the Win32 library? Cheers, Axel. =========================================================================== You can get a handle to the current instance of your app in one of 2 ways that I am aware of... 1) You can replace your main() with WinMain (defined below) in which case windows will pass you the instance, and you can either pass it into other functions or use it directly int WINAPI WinMain( HINSTANCE hInstance, // handle to current instance HINSTANCE hPrevInstance, // handle to previous instance LPSTR lpCmdLine, // pointer to command line int nCmdShow // show state of window ); OR 2) you can call GetModuleHandle (defined below) and pass in NULL for the lpModuleName and cast the resulting HMODULE into a HINSTANCE as shown below HMODULE GetModuleHandle( LPCTSTR lpModuleName // address of module name to return handle for ); To Use: HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL); Good luck! Vince

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[ghci] Comparison with Hugs
by Volker Stolz 24 Apr '01

24 Apr '01

In Hugs I can throw some definitions into a file and load it on the shell command line or using ":l" in Hugs. ghci however will complain that "main" is missing and even won't keep the defined functions in scope. Is there anything I can do about that? It even doesn't invoke main if it's present. I could hack ghci do add "main = print 1" in case main is undefined, but that's not really something I'd like to admit afterwards... -- Abstrakte Syntaxträume. Volker Stolz * stolz(a)i2.informatik.rwth-aachen.de * PGP + S/MIME

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RE: -optCrts-M28m
by Julian Seward (Intl Vendor) 24 Apr '01

24 Apr '01

| 2. I applied -optCrts-G3 -optCrts-F1.5 -optCrts-M28m | | to compile certain large module on 32Mb RAM machine. | Now, what to apply for this with ghc-5.00 ? +RTS -G3 -F1.5 -M28m -RTS J

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