[cairo] Confusion between generated and distributed cairo.def
J. Ali Harlow
ali at avrc.city.ac.uk
Thu Aug 25 04:30:11 PDT 2005
On 25/08/05 11:26:48, Tor Lillqvist wrote:
> J. Ali Harlow writes:
> > I think the best solution is to simply remove the distributed
> > version and always generate it.
> But this then will cause (a small amount of) extra work for those who
> want to build with MSVC, and need a .def file. Part of the reason to
> have an official cairo.def file in the tarball was so that also
> people who build with MSVC would use exactly the same entries in the
> DLL, wasn't it?
> (On the other hand a cairo tarball doesn't contain any makefiles for
> MSFT's nmake or any prebuilt config.h for Win32, so people building
> with MSVC have to do some manual work anyway. There is no guarantee
> they will choose to produce a DLL with the same name as the
> libtool+mingw combination does (libcairo-2.dll), either. In fact for
> MSVC users such a DLL name is probably far from what they would
> naturally choose. But that is perhaps not a bad thing, though, if it
> makes the distinction clear between the "official" ABI provided by a
> libcairo-2.dll produced using cairo.def and mingw, and other cairo
I don't know. Hans?
I attach a patch which implements my alternative solution. I'm not
really very happy with it however. It will work for non-developers
since cairo.def should always be up-to-date in distributions and should
work for developers that don't use VPATH since $(srcdir) will be "." in
this case and the rule for cairo.def will be used if the header files
change (I think), but it will cause a stale cairo.def if a developer is
using VPATH since the rule for cairo.def won't match $(srcdir)/
cairo.def). This sounds like the kind of subtle bug that would be hard
to track down and thus best avoided.
I'll think more on it and see if I can come up with a better solution
if the MSVC folks do need cairo.def.
Ali Harlow Email: ali at avrc.city.ac.uk
Senior Research Officer Tel: (020) 7040 4348
Applied Vision Research Centre Intl: +44 20 7040 4348
City University Fax: (020) 7040 5515
London Intl: +44 20 7040 5515
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