[geos-devel] Building GEOS with GDAL

[Mir Hassan Ali]

Hi Frank,

I downloaded the GDAL snapshot on 6th November 2006, so i assume it includes
the latest changes. When I compile it without the GEOS support, i.e the
following lines are commented in the nmake.opt file are commented:


GEOS_CFLAGS = -IC:/GEOS/trunk/capi -DHAVE_GEOS

GEOS_LIB = C:/GEOS/trunk/source/geos_c_i.lib
But when I uncomment these lines and try to build the API it gives me the
following link errors:

Creating library gdal_i.lib and object gdal_i.exp
ogr.lib(ogrgeometry.obj) : error LNK2019: unresolved external symbol
_GEOSGeomFr
omWKB_buf referenced in function "public: virtual struct GEOSGeom_t *
__thiscall
 OGRGeometry::exportToGEOS(void)const " (
?exportToGEOS at OGRGeometry@@UBEPAUGEOSGe
om_t@@XZ)
ogr.lib(ogrgeometry.obj) : error LNK2019: unresolved external symbol
_GEOSConvex
Hull referenced in function "public: virtual class OGRGeometry * __thiscall
OGRG
eometry::ConvexHull(void)const " (?ConvexHull at OGRGeometry@@UBEPAV1 at XZ )
ogr.lib(ogrgeometry.obj ) : error LNK2019: unresolved external symbol
_GEOSBounda
ry referenced in function "public: virtual class OGRGeometry * __thiscall
OGRGeo
metry::getBoundary(void)const " ( ?getBoundary at OGRGeometry@@UBEPAV1 at XZ)
ogr.lib(ogrgeometry.obj) : error LNK2019: unresolved external symbol
_GEOSBuffer
 referenced in function "public: virtual class OGRGeometry * __thiscall
OGRGeome
try::Buffer(double,int)const " ( ?Buffer at OGRGeometry@@UBEPAV1 at NH@Z)
ogr.lib(ogrgeometry.obj) : error LNK2019: unresolved external symbol
_GEOSInters
ection referenced in function "public: virtual class OGRGeometry *
__thiscall OG
RGeometry::Intersection(class OGRGeometry const *)const " (?Intersection at OGRGeom
etry@@UBEPAV1 at PBV1@@Z)
ogr.lib(ogrgeometry.obj ) : error LNK2019: unresolved external symbol
_GEOSUnion
referenced in function "public: virtual class OGRGeometry * __thiscall
OGRGeomet
ry::Union(class OGRGeometry const *)const " (?Union at OGRGeometry@@UBEPAV1 at PBV1@@Z
)
ogr.lib(ogrgeometry.obj) : error LNK2019: unresolved external symbol
_GEOSDiffer
ence referenced in function "public: virtual class OGRGeometry * __thiscall
OGRG
eometry::Difference(class OGRGeometry const *)const " (
?Difference at OGRGeometry@@
UBEPAV1 at PBV1@@Z)
ogr.lib(ogrgeometry.obj) : error LNK2019: unresolved external symbol
_GEOSSymDif
ference referenced in function "public: virtual class OGRGeometry *
__thiscall O
GRGeometry::SymmetricDifference(class OGRGeometry const *)const "
(?SymmetricDif
ference at OGRGeometry@@UBEPAV1 at PBV1@@Z)
ogr.lib(ogrpolygon.obj) : error LNK2019: unresolved external symbol
_GEOSGetCent
roid referenced in function "public: virtual int __thiscall
OGRPolygon::Centroid
(class OGRPoint *)const " ( ?Centroid at OGRPolygon@@UBEHPAVOGRPoint@@@Z)
gdal13.dll : fatal error LNK1120: 9 unresolved externals
NMAKE : fatal error U1077: 'link' : return code '0x460'
Stop.

Is there something else that I need to do in addition to the changes
mentioned above to the nmake.opt file. Please note that I am using the
latest version of the GEOS API. I checked it out from the subversion trunk
and built it. It builds fine without any errors or warnings.

Best Regards

Mir

On 11/13/06, Frank Warmerdam <warmerdam at pobox.com> wrote:
>
> Mir Hassan Ali wrote:
> > Hi
> >
> > I am trying to build GDAL with GEOS support and I am getting these
> > linker errors
>
> Mir,
>
> This summer Mateusz Loskot did quite a bit of improvement to the GEOS
> handling within GDAL/OGR and I'd suggest you try using the latest
> working GDAL code (rather than the spring release code - 1.3.2).
>
> Grab a daily cvs snapshot from:
>
>   http://gdal.maptools.org/dl/daily
>
> Note that now GDAL uses the GEOS C API instead of the C++ api which
> can avoid a number of problems.
>
> Best regards,
> --
>
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam,
> warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | President OSGeo, http://osgeo.org
>
> _______________________________________________
> geos-devel mailing list
> geos-devel at geos.refractions.net
> http://geos.refractions.net/mailman/listinfo/geos-devel
>
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