[Haskell-cafe] Cabal, GHC, FFI and Visual Studio on Windows

Magnus Therning magnus at therning.org
Sun Feb 3 06:31:14 EST 2008

Duncan Coutts wrote:
> On Sat, 2008-02-02 at 22:33 +0000, Magnus Therning wrote:
>> Duncan Coutts wrote:
>> [..]
>>> Just so I'm sure I understand...
>> Sure thing.
>>> Or are you just trying to link some C code statically into a haskell
>>> program, but it just so happens that this C code relies on being built
>>> with MS's C compiler rather than gcc.
>> Yes, this is exactly it.  I mean, I could probably hack the incomplete
>> mingw header files to add the functions I need, but I thought it'd be
>> much easier to just use Microsoft's development environment.
>>> Perhaps you could clarify what it is you're trying to do (the end goal,
>>> just just the minutia) so we can see what feature it is that Cabal is
>>> missing that would help your situation. When we figure that out we can
>>> file a feature request so it is not forgotten.
>> The end goal is to sneak Haskell into the work place ;-)
>> What I'd really like to see is the ability to “drive” development
>> completely from Haskell.  With that I mean to, just as on Linux, have a
>> single cabal file that compiles the C code containing the wrappers while
>> still having access to a complete development environment.  On Windows
>> that means compiling C/C++ with MS's tool set.
>> I hope that clarifies what goes on in my muddy mind a bit...
> Ok, so you could create a separate component to produce the .dll / .a
> from the C code but you'd prefer the convenience of being able to just:
> c-sources: blah.c
> and have them included in the project, but built using the MS C
> compiler.
> So I think we should file a feature request about building C sources
> using gcc/ms-c directly rather than going via ghc as that would give us
> the flexibility to use alternative C compilers.
> Perhaps you'd like to file it, otherwise I can.
> http://hackage.haskell.org/trac/hackage/

I raised ticket 229 for this issue.


Magnus Therning                             (OpenPGP: 0xAB4DFBA4)
magnus@therning.org             Jabber: magnus.therning@gmail.com

What if I don't want to obey the laws? Do they throw me in jail with
the other bad monads?
     -- Daveman

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