[FWTools] Connecting FWTools/OGR to g++

[Frank Warmerdam]

Chris Everhart wrote:
> OK, so I found this:
> 
> http://lists.maptools.org/pipermail/fwtools/2006-January/000269.html
> 
> and tried it.  I used this code (from the tutorial):
> #include "gdal.h"
> 
> int main()
> {
>    GDALDatasetH  hDataset;
> 
>    GDALAllRegister();
> }
> 
> And here is the result (with gcc):
> Owner at dworksgis /cygdrive/c/Program Files/FWTools1.0.5
> $ gcc -I "C:/Program Files/FWTools1.0.5/include" geotest.cpp
> In file included from C:/Program Files/FWTools1.0.5/include/cpl_port.h:156,
>                 from C:/Program Files/FWTools1.0.5/include/gdal.h:135,
>                 from geotest.cpp:1:
> c:/MinGW/include/math.h:672: declaration of C function `float 
> _copysign(float,
>   float)' conflicts with
> c:/MinGW/include/math.h:671: previous declaration `double _copysign(double,
>   double)' here
> c:/MinGW/include/math.h:673: declaration of C function `long double
>   _copysign(long double, long double)' conflicts with
> c:/MinGW/include/math.h:672: previous declaration `float _copysign(float,
>   float)' here
> 
> If I compile it without the include path, the result is this:
> $ g++ geotest.cpp -o ogrTest
> C:\DOCUME~1\Owner\LOCALS~1\Temp/ccWWcaaa.o(.text+0x1f):geotest.cpp: 
> undefined re
> ference to `GDALAllRegister'
> 
> So I definately need to add the include path, but do I need to somehow 
> override the builtin "math.h"?

Chris,

Sorry, I just don't know the answer to this.  This isn't a supported
configuration.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | President OSGF, http://osgeo.org