June 2008 - C2hs - Haskell.org

Re: [C2hs] distributing packages that use C2HS
by Duncan Coutts 24 Jun '08

24 Jun '08

On Mon, 2008-06-23 at 12:51 -0500, John Lato wrote: > Okay, thanks. I'll just need to live with the dependency on c2hs for > end-users. I suppose if that's a problem, I should have chosen > something other than c2hs as a build tool. In general though it does need to be done on the end users machine so it's not just a c2hs limitation. You may be lucky and know for certain that for the particular C API that you are binding that it is the same on every platform and contains no sizes or offsets of types (since sizes and offsets change between platforms, especially between 32 and 64bit ones). In that happy circumstance then it would be safe to bundle pre-generated .hs files. Cabal will not help you there however since it takes the conservative position that the result of c2hs (and hsc2hs and other FFI pre-processors) is platform dependent. One way to check if its portable is to look at the .hs files generated by c2hs and see if there are any numbers generated. If so then it is platform dependent. Another way of saying it is that call and fun hooks are ok but sizeof, get and set hooks are not. However even if there are no numbers in the generated .hs that doesn't guarantee you're safe. If you're binding to a .h file that might be different on different systems then you've got problems. It is quite common for lots of system headers to use slightly different types on different systems. If you're binding to a C library that has the same implementation on each system or is otherwise guaranteed to have the same C interface then you'd be ok. If you were *absolutely* sure then you could manually include the generated .hs files in dist/build/ in the same path in the tarball and it would work without c2hs installed (assuming you also removed the c2hs build-tool dep). For example see the tarball for happy and where the pre-generated .hs file lives in the tarball (of course for happy, cabal does this automatically because it knows the output of happy is platform independent). Duncan

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distributing packages that use C2HS
by John Lato 23 Jun '08

23 Jun '08

Hello, I have a package (binding to a C library) that uses C2HS that I'm cleaning up for a hackage release. I was wondering if there are any guidelines as to which files to include and how to set up the build. I could include the .chs file, but then anyone trying to build the library would need C2HS. Alternatively, I could include just the .hs file I get from running C2HS (and C2HS.hs), which would be okay, but I would like to provide all available source files for anyone who's interested. Including both seems like asking for trouble in the build process. Does anyone have any recommendations for this? I couldn't find anything addressing it in the cabal packaging guidelines. Thanks, John Lato

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patch applied (c2hs): Bump version number
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 15:39:20 PDT 2008 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Bump version number Just so it's different from the last released version M ./c2hs.cabal -1 +1 View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620223920-9561d-ba0eecb3b…

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patch applied (c2hs): Partially convert to haddock style documentation markup
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 15:34:45 PDT 2008 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Partially convert to haddock style documentation markup M ./src/C2HS/C.hs -3 +3 M ./src/C2HS/C/AST.hs -23 +23 M ./src/C2HS/C/Attrs.hs -28 +27 M ./src/C2HS/C/Builtin.hs -1 +1 M ./src/C2HS/C/Info.hs -7 +7 M ./src/C2HS/C/Names.hs -7 +7 M ./src/C2HS/C/Parser.y -5 +5 M ./src/C2HS/C/Pretty.hs -7 +7 M ./src/C2HS/C/Tokens.hs -2 +2 M ./src/C2HS/C/Trav.hs -89 +85 M ./src/C2HS/CHS.hs -35 +35 M ./src/C2HS/CHS/Lexer.hs -27 +25 M ./src/C2HS/Config.hs -15 +15 M ./src/C2HS/Gen/Bind.hs -66 +66 M ./src/C2HS/Gen/Header.hs -14 +14 M ./src/C2HS/Gen/Monad.hs -29 +29 M ./src/C2HS/State.hs -7 +7 M ./src/C2HS/Switches.hs -4 +4 M ./src/Control/State.hs -30 +28 M ./src/Control/StateBase.hs -12 +11 M ./src/Control/StateTrans.hs -34 +33 M ./src/Data/Attributes.hs -39 +38 M ./src/Data/DLists.hs -9 +9 M ./src/Data/Errors.hs -20 +20 M ./src/Data/Idents.hs -14 +14 M ./src/Data/NameSpaces.hs -8 +8 M ./src/Data/Position.hs -11 +10 M ./src/Data/UNames.hs -8 +8 M ./src/Main.hs -47 +46 M ./src/Text/Lexers.hs -35 +34 View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620223445-9561d-c1196f59d…

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patch applied (c2hs): White space changes
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 12:18:27 PDT 2008 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * White space changes Convert tabs to spaces and remove trailing space M ./src/C2HS/C.hs -76 +76 M ./src/C2HS/C/AST.hs -242 +242 M ./src/C2HS/C/Attrs.hs -86 +86 M ./src/C2HS/C/Info.hs -21 +21 M ./src/C2HS/C/Lexer.x -148 +148 M ./src/C2HS/C/Names.hs -43 +43 M ./src/C2HS/C/Parser.y -539 +539 M ./src/C2HS/C/ParserMonad.hs -13 +13 M ./src/C2HS/C/Tokens.hs -126 +126 M ./src/C2HS/C/Trav.hs -182 +182 M ./src/C2HS/CHS.hs -422 +422 M ./src/C2HS/CHS/Lexer.hs -230 +230 M ./src/C2HS/Config.hs -14 +14 M ./src/C2HS/Gen/Bind.hs -722 +722 M ./src/C2HS/Gen/Header.hs -73 +73 M ./src/C2HS/Gen/Monad.hs -115 +115 M ./src/C2HS/State.hs -17 +17 M ./src/C2HS/Switches.hs -32 +32 M ./src/C2HS/Version.hs -5 +5 M ./src/C2HS/config.c -11 +11 M ./src/C2HS/config.h -4 +4 M ./src/Control/State.hs -86 +86 M ./src/Control/StateBase.hs -13 +13 M ./src/Control/StateTrans.hs -82 +82 M ./src/Data/Attributes.hs -78 +77 M ./src/Data/Errors.hs -28 +28 M ./src/Data/Idents.hs -15 +15 M ./src/Data/NameSpaces.hs -21 +21 M ./src/Data/Position.hs -8 +8 M ./src/Data/UNames.hs -14 +14 M ./src/Main.hs -157 +157 M ./src/System/CIO.hs -22 +22 M ./src/Text/Lexers.hs -111 +111 View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620191827-9561d-d273a0a2d…

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patch applied (c2hs): Use qualified names for System.CIO
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 10:32:39 PDT 2008 Duncan Coutts <duncan(a)haskell.org> * Use qualified names for System.CIO Always use import qualified System.CIO as CIO instead of putting a CIO suffix on everything. M ./src/C2HS/C.hs -2 +2 M ./src/C2HS/CHS.hs -6 +6 M ./src/C2HS/State.hs -2 +3 M ./src/Control/State.hs -3 +4 M ./src/Main.hs -37 +36 M ./src/System/CIO.hs -64 +58 View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620173239-adfee-e00108532…

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patch applied (c2hs): Import System.CIO directly rather than by re-exporting
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 10:07:55 PDT 2008 Duncan Coutts <duncan(a)haskell.org> * Import System.CIO directly rather than by re-exporting M ./src/C2HS/C.hs -1 +1 M ./src/C2HS/CHS.hs -2 +2 M ./src/C2HS/State.hs +1 M ./src/Control/State.hs -2 +1 M ./src/Main.hs -4 +4 View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620170755-adfee-51b57c108…

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patch applied (c2hs): Use qualified names for DList module
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 09:30:02 PDT 2008 Duncan Coutts <duncan(a)haskell.org> * Use qualified names for DList module M ./src/C2HS/Gen/Header.hs -20 +21 M ./src/Data/DLists.hs -13 +13 M ./src/Text/Lexers.hs -4 +5 View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620163002-adfee-25d878bf9…

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patch applied (c2hs): Fix up module names and imports
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 09:18:43 PDT 2008 Duncan Coutts <duncan(a)haskell.org> * Fix up module names and imports M ./src/C2HS/C.hs -13 +13 M ./src/C2HS/C/AST.hs -4 +4 M ./src/C2HS/C/Attrs.hs -7 +7 M ./src/C2HS/C/Builtin.hs -4 +4 M ./src/C2HS/C/Info.hs -5 +5 M ./src/C2HS/C/Lexer.x -5 +5 M ./src/C2HS/C/Names.hs -8 +8 M ./src/C2HS/C/Parser.y -11 +11 M ./src/C2HS/C/ParserMonad.hs -6 +6 M ./src/C2HS/C/Pretty.hs -3 +3 M ./src/C2HS/C/Tokens.hs -3 +3 M ./src/C2HS/C/Trav.hs -8 +8 M ./src/C2HS/CHS.hs -7 +7 M ./src/C2HS/CHS/Lexer.hs -7 +7 M ./src/C2HS/Config.hs -5 +5 M ./src/C2HS/Gen/Bind.hs -11 +11 M ./src/C2HS/Gen/Header.hs -8 +8 M ./src/C2HS/Gen/Monad.hs -6 +6 M ./src/C2HS/State.hs -4 +4 M ./src/C2HS/Switches.hs -2 +2 M ./src/C2HS/Version.hs -1 +1 M ./src/C2HS/config.c -1 +1 M ./src/Control/State.hs -10 +9 M ./src/Control/StateBase.hs -6 +5 M ./src/Control/StateTrans.hs -1 +1 M ./src/Data/Attributes.hs -4 +4 M ./src/Data/DLists.hs -1 +1 M ./src/Data/Errors.hs -2 +2 M ./src/Data/Idents.hs -5 +5 M ./src/Data/NameSpaces.hs -3 +3 M ./src/Data/Position.hs -1 +1 M ./src/Data/UNames.hs -1 +1 M ./src/Main.hs -8 +8 M ./src/System/CIO.hs -2 +2 M ./src/Text/Lexers.hs -4 +4 View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620161843-adfee-8e882f620…

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patch applied (c2hs): Move c2hs modules under src/
by Duncan Coutts 20 Jun '08

20 Jun '08

Fri Jun 20 09:11:08 PDT 2008 Duncan Coutts <duncan(a)haskell.org> * Move c2hs modules under src/ and rename them to use hierarchical module names ./c2hs/c/C.hs -> ./src/C2HS/C.hs ./c2hs/c/CAST.hs -> ./src/C2HS/C/AST.hs ./c2hs/c/CAttrs.hs -> ./src/C2HS/C/Attrs.hs ./c2hs/c/CBuiltin.hs -> ./src/C2HS/C/Builtin.hs ./c2hs/c/CLexer.x -> ./src/C2HS/C/Lexer.x ./c2hs/c/CNames.hs -> ./src/C2HS/C/Names.hs ./c2hs/c/CParser.y -> ./src/C2HS/C/Parser.y ./c2hs/c/CParserMonad.hs -> ./src/C2HS/C/ParserMonad.hs ./c2hs/c/CPretty.hs -> ./src/C2HS/C/Pretty.hs ./c2hs/c/CTokens.hs -> ./src/C2HS/C/Tokens.hs ./c2hs/c/CTrav.hs -> ./src/C2HS/C/Trav.hs ./c2hs/chs/CHS.hs -> ./src/C2HS/CHS.hs ./c2hs/chs/CHSLexer.hs -> ./src/C2HS/CHS/Lexer.hs ./c2hs/examples -> ./examples ./c2hs/gen/CInfo.hs -> ./src/C2HS/C/Info.hs ./c2hs/state/C2HSState.hs -> ./src/C2HS/State.hs ./c2hs/state/Switches.hs -> ./src/C2HS/Switches.hs ./c2hs/toplevel/C2HSConfig.hs -> ./src/C2HS/Config.hs ./c2hs/toplevel/Main.hs -> ./src/Main.hs ./c2hs/toplevel/Version.hs -> ./src/C2HS/Version.hs ./c2hs/gen/GBMonad.hs -> ./src/C2HS/Gen/Monad.hs ./c2hs/gen/GenBind.hs -> ./src/C2HS/Gen/Bind.hs ./c2hs/gen/GenHeader.hs -> ./src/C2HS/Gen/Header.hs ./c2hs/c/tests/CCWrapper.hs -> ./tests/cparser/CCWrapper.hs ./c2hs/c/tests/Makefile -> ./tests/cparser/Makefile ./c2hs/c/tests/ParseUnit.hs -> ./tests/cparser/ParseUnit.hs ./c2hs/c/tests/cc-wrapper.sh -> ./tests/cparser/cc-wrapper.sh ./c2hs/c/tests/declr.i -> ./tests/cparser/declr.i ./c2hs/c/tests/simple.i -> ./tests/cparser/simple.i ./c2hs/c/tests/struct.i -> ./tests/cparser/struct.i ./c2hs/c/tests/typedef.i -> ./tests/cparser/typedef.i ./c2hs/tests/Calls.chs -> ./tests/system/Calls.chs ./c2hs/tests/Cpp.chs -> ./tests/system/Cpp.chs ./c2hs/tests/Enums.chs -> ./tests/system/Enums.chs ./c2hs/tests/Makefile -> ./tests/system/Makefile ./c2hs/tests/Marsh.chs -> ./tests/system/Marsh.chs ./c2hs/tests/Pointer.chs -> ./tests/system/Pointer.chs ./c2hs/tests/Simple.chs -> ./tests/system/Simple.chs ./c2hs/tests/Structs.chs -> ./tests/system/Structs.chs ./c2hs/tests/calls.h -> ./tests/system/calls.h ./c2hs/tests/cpp.h -> ./tests/system/cpp.h ./c2hs/tests/enums.c -> ./tests/system/enums.c ./c2hs/tests/enums.h -> ./tests/system/enums.h ./c2hs/tests/marsh.h -> ./tests/system/marsh.h ./c2hs/tests/pointer.c -> ./tests/system/pointer.c ./c2hs/tests/pointer.h -> ./tests/system/pointer.h ./c2hs/tests/simple.c -> ./tests/system/simple.c ./c2hs/tests/simple.h -> ./tests/system/simple.h ./c2hs/tests/structs.c -> ./tests/system/structs.c ./c2hs/tests/structs.h -> ./tests/system/structs.h ./c2hs/toplevel/c2hs_config.c -> ./src/C2HS/config.c ./c2hs/toplevel/c2hs_config.h -> ./src/C2HS/config.h ./src/Control/CIO.hs -> ./src/System/CIO.hs R ./c2hs/ M ./c2hs.cabal -49 +40 R ./c2hs/c/ R ./c2hs/c/tests/ R ./c2hs/chs/ R ./c2hs/gen/ R ./c2hs/state/ R ./c2hs/tests/ R ./c2hs/toplevel/ A ./src/C2HS/ A ./src/C2HS/C/ A ./src/C2HS/CHS/ A ./src/C2HS/Gen/ A ./src/System/ A ./tests/cparser/ A ./tests/system/ View patch online: http://darcs.haskell.org/c2hs/_darcs/patches/20080620161108-adfee-6ae78a985…

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