December 2005 - Yhc - Haskell.org

YHC build finished successfully, but install is not "fairly trivial"
by Jared Updike 22 Dec '05

22 Dec '05

Hello all, I just 'darcs got' the sources and compiled YHC on Linux (Ubuntu) last night. I got it to compile just fine with 'make' but on the install side of things I ran into a number of problems. I read on the wiki (YHC/Building) that > There currently isn't a 'make install', but it is fairly trivial: simply copy the contents of the > 'inst' directory into where everything should be installed. I didn't find this to be the case. I copied the 'inst' folder to '/usr/lib/yhc', but then (1) I had to set up an environment variable YHC_BASE_PATH to point there, (2) I had to symlink 'yhi' and 'yhc' to '/usr/bin'. That really wasn't that big of a deal. I ran YHC on a test Haskell script, called Main.hs: > module Main (main) where > > fac 0 = 1 > fac n | n > 0 = n * fac (n-1) > > main = print $ fac 30 and it succeeds. But, trying to run the .hbc file with yhi fails: -------- ERROR: couldn't find module named 'Data/Ratio' tried: Data/Ratio.hbc /usr/lib/yhc/lib/yhc/packages/yhc-base/1.0/Data/Ratio.hbc -------- In that directory, there exist a bunch of .hbc and .hi file pairs (Char, Array, List, Ix, Complex, Maybe, PackedString, _CharNumeric) , AND Ratio.hi, but no Ratio.hbc ..., (incidentally, /usr/lib/yhc/lib/yhc/packages/haskell98/1.0/Ratio.hbc DOES exist...) The question is, why does running my factorial program trigger a Data.Ratio error? I think it's an installation problem, and it's probably related to the fact that... ... I can't really get most of the test suite to run. (Here is a link to the error output stream of runtests.py: http://www.updike.org/~jared/here/err.txt (164kB)) This is not "fairly trivial", this is disheartening. What am I missing? I will update the wiki when I get it working, if I can get some help with the path and directory scheme, environment variables, and other black magic. Jared. P.S. I am still really excited about YHC! -- jupdike(a)gmail.com http://www.updike.org/~jared/ reverse ")-:"

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Compiling
by Neil Mitchell 19 Dec '05

19 Dec '05

Hi, I'm relatively new to Linux (I avoid it like the plague), so I tried building Yhc on Linux. The first thing I did was darcs get, all nice and easy, if not particularly fast. Next thing I did was type make, and got a strange error message. A few minutes later I realised that the reason is because configure has not been run. Is it possible to detect this case, and ideally just run configure for the user, or at the very least give a helpful and friendly message telling them exactly what they need to do? I was very impressed that yhc and yhi both built nice and easily, although the YHC_BASE_PATH issue threw up its head, and since I have no idea how to set an environment variable, at that point I have to give up. Sensible defaults would be really nice. It should also be documented somewhere on the wiki. Thanks Neil

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darcs patch: copy Data.Ratio bytecode file when bootstrapping
by Malcolm.Wallace＠cs.york.ac.uk 19 Dec '05

19 Dec '05

Mon Dec 19 11:32:04 GMT 2005 Malcolm.Wallace(a)cs.york.ac.uk * copy Data.Ratio bytecode file when bootstrapping

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"Data/Ratio" yhi error on macos X
by Mike Dodds 19 Dec '05

19 Dec '05

Hi, Yhc / yhi compiles and installs on my system, but if you try to compile a simple Haskell program like this: main = putStrLn $ show (2+3) executing the bytecode file with yhi gives you this error: ERROR: couldn't find module named 'Data/Ratio' tried: Data/Ratio.hbc /Users/mike/Compile/yhc-devel/inst/lib/yhc/packages/yhc-base/1.0/Data/Ratio.hbc However, this program *will* compile and run correctly: main = putStrLn "hello, world!" This still happens if I get and compile fresh copy of yhc-devel from darcs, so I don't think my repo has been corrupted or anything. Mike.

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regression test suite?
by Malcolm Wallace 14 Dec '05

14 Dec '05

Does the regression test suite for yhc get run every night? I was just wondering if the nice graphical report at http://www-users.cs.york.ac.uk/~ndm/yhc/report.html was supposed to be updated automatically or not? Regards, Malcolm

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Suitability of yhc for handheld Haskell
by Tony Sloane 11 Dec '05

11 Dec '05

Hi all, We at Macquarie Uni have been working for some time on handheld implementations of Haskell. Our most recent efforts have focused on nhc98 and we have a "mostly working" version of the nhc98 runtime for Palm OS. Our aim is to provide a testbed for DSL-based specification of handheld applications. I am excited by the potential that yhc offers for making handheld Haskell easier to build and work with. yhc seems to offer a great deal for our project (e.g., portability, cross platform bytecode, less/no reliance on C linker). So, my question to you is: Would you advise active use of the yhc code as a basis for our handheld work? Is it stable enough to be useful for this at this point? We can probably put up with deficiencies at the compiler end since we don't expect to write very large or complex programs in the near future but we need the runtime to be stable so we can be sure of the port. Or should we wait? Any other comments? I'm hoping that it is stable enough since we want to get quite a bit of work done over the (Southern Hemisphere) summer. Cheers, Tony Sloane Dept of Computing, Macquarie University, Sydney

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can't build on MacOS?
by Malcolm Wallace 07 Dec '05

07 Dec '05

I'm having trouble getting started with building yhc on MacOS. The configure step does not get very far: $ ./configure --prefix=/sw checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking for __gmpz_init in -lgmp... no configure: error: cannot find libgmp However, I do have libgmp installed, in /sw/lib, and my LD_LIBRARY_PATH variable points to that directory. Any ideas? Regards, Malcolm

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XML Bytecode specification
by Neil Mitchell 06 Dec '05

06 Dec '05

Hi, Since there are now several things with intimate knowledge of what the bytecode looks like (Documentation, Java, Haskell*2, C, Python at least) I thought I'd write an XML specification for the bytecode, along with generators in XSL to generate all of these bindings. This way if the bytecode does ever change, it will be less painful, and hopefully it will be a little bit less work for everyone anyway. Attached is a first version of this. To run an XML+XSL to generate a file, windows users should probably use msxsl (free download from MS) and Unix users can use Xalan, although I'm not sure if there is anything better. The generators including in this zip include: * Haskell - probably wrong, requires a library you certainly don't have, I'll flesh this out in the future for the Haskell bytecode library. * C - can generate bytecodes.h perfectly * Python - does what I got asked to do with it * Documentation - http://www.cs.york.ac.uk/~ndm/yhc/bytecodes.html * Java - not done. Brian: feel free to give me a spec and I'll write you a .xsl file for it. This .zip file will probably be added to the repo under src/compiler98/ByteCode/data tomorrow. Thanks Neil

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Problems getting Yhc compiling on MacOS
by Mike Dodds 05 Dec '05

05 Dec '05

I've been having trouble getting yhc (devel) to compile on MacOS. I'm using: ghc 6.4, and gcc 4.0.1 I'm getting the following message: [...] Skipping Package ( ./Package.hs, ./Package.o ) Skipping Phase ( ./Phase.hs, ./Phase.o ) Skipping Front ( ./Front.lhs, ./Front.o ) Skipping Compile ( ./Compile.lhs, ./Compile.o ) Skipping Make ( ./Make.lhs, ./Make.o ) Skipping Main ( Main.hs, Main.o ) Linking ... make -C src/cpphs-1.0 ghc --make cpphs.hs -o ../../inst/bin/cpphs IChasing modules from: cpphs.hs Skipping ParseLib ( ./ParseLib.hs, ./ParseLib.o ) Skipping HashDefine ( ./HashDefine.hs, ./HashDefine.o ) Skipping SymTab ( ./SymTab.hs, ./SymTab.o ) Skipping Position ( ./Position.hs, ./Position.o ) Skipping Tokenise ( ./Tokenise.hs, ./Tokenise.o ) Skipping ReadFirst ( ./ReadFirst.hs, ./ReadFirst.o ) Skipping CppIfdef ( ./CppIfdef.hs, ./CppIfdef.o ) Skipping MacroPass ( ./MacroPass.hs, ./MacroPass.o ) Skipping RunCpphs ( ./RunCpphs.hs, ./RunCpphs.o ) Skipping Main ( cpphs.hs, cpphs.o ) Linking ... make -C src/packages/yhc-base-1.0 export YHC_BASE_PATH=../../../inst ; ../../../inst/bin/yhc -d ../../../inst/lib/yhc/packages/yhc-base/1.0/ -i ../../../inst/lib/yhc/packages/yhc-base/1.0/ -c System/Exit.hs yhc: Error: File not found, Data.Ratio Looked in: ../../../inst/lib/yhc/packages/yhc-base/1.0 make[1]: *** [../../../inst/lib/yhc/packages/yhc-base/1.0//System/Exit.hi] Error 1 make: *** [yhc-base] Error 2

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Sending patches
by Neil Mitchell 04 Dec '05

04 Dec '05

Hi, What do the people on this list want, should patches be sent to this list, or direct to Tom (shackell -AT- cs.york.ac.uk) ? If people would rather leave this list open for discussion, then maybe we need a yhc-patches@ list for people to send patches on? Thoughts? Neil

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