[gdal-dev] Compile errors when including gdal.lib (trunk version)

[Paul Meems]

Thanks Even,

I commented the DllMain() implementation and now my project compiles again.
I would love to send a patch but I'm not a C++ developer and don't know how
to fix this.

I will now look into the ECW error.

Thanks,




Paul

 *Paul Meems *
Release manager, configuration manager
and forum moderator of MapWindow GIS.
www.mapwindow.org

Owner of MapWindow.nl - Support for
Dutch speaking users.
www.mapwindow.nl

*
*


2013/10/14 Even Rouault <even.rouault at mines-paris.org>

> Le lundi 14 octobre 2013 18:33:05, Paul Meems a écrit :
> > Hi all,
> >
> > We're using GDAL in our Open Source GIS application called MapWinGIS (
> > https://mapwingis.codeplex.com).
> > MapWinGIS is build using Visual Studio 2008 Pro and its language is VC++.
> > We've been using GDAL for years now.
> > I'm currently in the process of update the external libraries, like GDAL,
> > GEOS, etc.
> >
> > I have compiled the trunk version of GDAL (v1.10.1), with the trunk
> version
> > of Proj4, GEOS v3.4.2, ERDAS SDK v5 and the latest LizardTech SDK.
> > This process seems to be working OK, like it has been for the last
> several
> > years.
> > When I test with gdalinfo.exe I can open tiff-files, ECW-files and
> > MrSid-files.
> >
> > But when I want to include the gdal.lib into MapWinGIS I get two strange
> > errors which I don't get if I use GDAL v1.9.
> >
> > #1: error LNK2005: _DllMain at 12 already defined in
> > mfcs90.lib(dllmodul.obj)    gdal.lib
> > #2: fatal error LNK1194: cannot delay-load 'NCSEcw.dll' due to import of
> > data symbol '"__declspec(dllimport) const NCS::CMutex::`vftable'"
> > (__imp_??_7CMutex at NCS@@6B@)'; link without /DELAYLOAD:NCSEcw.dll
> >
> > The second error is about the ERDAS SDK and can be solved by removing
> > 'NCSEcw.dll' from the delay load binaries. But I'm not sure if we can
> still
> > show ecw-files.
> >
> > #1 seems to be the biggest problem and we've tried several different
> > configurations and searched a lot using Google but we can solve this.
> >
> > Does anybody understands what is going on and how we can fix this so we
> can
> > use the latest GDAL library?
>
> It seems that you are statically linking to GDAL ? Then try commenting the
> DllMain() implementation in gcore/gdaldllmain.cpp. If this is the root of
> the
> problem, it probably means that we shouldn't link that file in the static
> lib.
> Patches welcome !
>
> >
> >
> > Thanks,
> >
> > Paul
> >
> >  *Paul Meems *
> > Release manager, configuration manager
> > and forum moderator of MapWindow GIS.
> > www.mapwindow.org
> >
> > Owner of MapWindow.nl - Support for
> > Dutch speaking users.
> > www.mapwindow.nl
> >
> > *
> > *
>
> --
> Geospatial professional services
> http://even.rouault.free.fr/services.html
>
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