[geos-devel] New problem when compiling QGis against geos 3.0.0rc4

[Mike Leahy]

Hello,

Tom Elwertowski on the QGis-developer list noted a change between rc3
and rc4, and suggested a fix that seems to have resolved things for me
when compiling QGis.  His explanation is below.

Mike

Tom Elwertowski wrote:
> >
> > There is a change between GEOS 3.0.0rc3 and rc4 that requires either an
> > edit to GEOS or a new compile flag to QGIS in order to compile.
> >
> > I made the following edit to rc4 in order to provide the missing
> > routines to QGIS. Change line 30 of source/inlines.cpp from
> >
> > #if defined(__MINGW32__) && !defined(DLL_EXPORT)
> >
> > to
> >
> > #if !defined(__MINGW32__) || defined(__MINGW32__) &&
!defined(DLL_EXPORT)
> >
> >
> > Some routines, including four that QGIS needs, can be defined either
> > inline or linked from the GEOS library. If you define GEOS_INLINE for
> > QGIS, the functions will be defined inline and you won't need external
> > copies of these routines.
> >
> > A MINGW user was getting doubly defined errors when using GEOS_INLINE
> > and therefore submitted a patch which removes the library routines. The
> > patch was probably intended for MINGW only but actually affects all
> > platforms. I'm surprised no one else has noticed. Perhaps everyone is
> > defining GEOS_INLINE.
> >
> > Tom