[darcs-devel] [darcs-users] Problem building darcs 2 on WinXP

David Roundy droundy at darcs.net
Mon Dec 17 23:47:32 UTC 2007


On Tue, Dec 18, 2007 at 09:20:22AM +1100, Rob Moss wrote:
> On 18/12/2007, David Roundy <droundy at darcs.net> wrote:
> > On Mon, Dec 17, 2007 at 03:55:20PM +0000, Simon Marlow wrote:
> > > Looks like it should be
> > >
> > > foreign import stdcall "winbase.h SleepEx" c_SleepEx ...
> > >
> > > (i.e. stdcall rather than ccall)
> > >
> > > this would cause it to work with -fvia-C but fail with -fasm, because the C
> > > compiler can see the prototype.  Arguably a bug in -fvia-C, but it's been
> > > that way for a very long time.
> >
> > I'm not sure I understand what's gone wrong here.  Do either of you have a
> > recommendation for something our fearless user can try? or a patch for us
> > to apply?
> 
> Thanks a lot everybody! By changing the import from ccall to stdcall,
> I was able to successfully compile darcs! The HTML manual is also
> compiled, although there must be some small problem (maybe in the
> makefile?) as make rebuilds the manual every time I run it. That
> doesn't matter at all to me, but if you'd like I can try to figure out
> what the problem might be.
> 
> Anyway, I'm off to test darcs 2! Thanks again for your help :)

Great!

But I'm still confused as to what change (if any) I should make.  I thought
I understood that changing to stdcall would fail on older versions of ghc,
or is that always the correct way to go? If so, should we perhaps put in a
configure test to determine which is the proper way to call this function?
-- 
David Roundy
Department of Physics
Oregon State University


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