[FWTools] FWTools Library Version

[Lennox Antoine]

Well I built ogrinfo.cpp in a visual C++ project using the lib and
headers from FWTools1.0.0a8 and I get the same problem.

The included project will build if you copy all the lib and header
files from the fwtools distribution in that directory. It fails to
display any information though.

So is it safe to say that I can't use the FWTools dll's? One last
thing I thought of, what version of MSVC is fwtools built with? I am
building with 7.1.

-Lennox

On 1/1/06, Lennox Antoine <lxnyce at gmail.com> wrote:
> Thanks for the quick response. My next question would be which API is
> distributed with FWTools? I copied the headers and lib files from the
> fwtools directory and linked against those. This should theoretically
> be safe for the API.
>
> Also, I tried just opening the file with the C api, and it caused the
> exception. Perhaps I can try to write a simple C++ application to
> reproduce this with my same project settings. If no ideas, thats what
> I will try next.
>
> -Lennox
>
> On 1/1/06, Frank Warmerdam <warmerdam at pobox.com> wrote:
> > On 1/1/06, Lennox Antoine <lxnyce at gmail.com> wrote:
> > > Hi All,
> > >
> > > I am trying to find out why I can't use the FWTools version of
> > > GDAL/OGR on Windows instead of the version I built. Was it built as
> > > Multithreaded instead of Multithreaded DLL?
> > >
> > > The symtoms I am seeing is that rasters will load, but if you pass an
> > > invalid raster (like a shapefile) an exception gets thrown instead of
> > > the function returning NULL.
> > >
> > > Vectors will not load at all. An exception is always thrown. I tried
> > > converting to use the C api, and I still get the same results. OGROpen
> > > will throw an exception even though the shape file is valid.
> > >
> > > I ran ogrinfo.exe included with FWTools on the same shapefile and it
> > > worked. It also works with the GDAL I compile myself as well. I tried
> > > with 0.0a7 and 0.08. Any ideas? I would really like to use the ArcSDE
> > > and PostGIS support of the FWTools dll.
> >
> > Lennox,
> >
> > I suspect that the problem is subtle differences in the API versions
> > resulting in incompatibility.  That is certainly common with ogrinfo
> > and ogr2ogr which use the C++ API (which is very ABI-fragile).
> >
> > Note that FWTools tracks the CVS version of the API at the time it
> > is prepared, and won't generally match up with C++ applications
> > built against other versions.  C applications should generally be ok.
> >
> > 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    | Geospatial Programmer for Rent
> >
>
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