Hi all,
        I have written an application which uses OpenSG for rendering. 
When I compile my application, I get lots of compilation warnings. I am 
using VC.NET2003 compiler (i.e. VC7) on Window XP. The type of warnings 
that are shown by VC7 are shown below:

c:\trees\3dviewerapp\thirdparty\OpenSG\include\OpenSG\OSGSFBaseTypes.h(66) 
: warning C4231: nonstandard extension used : 'extern' before template 
explicit instantiation

And the line in OSGSFBaseTypes.h at 66 is shown below

#ifndef OSG_COMPILEFIELDINST
OSG_DLLEXPORT_DECL1(SField, std::string, OSG_BASE_DLLTMPLMAPPING) //is 
the line 66
#endif

There are almost 242 such warnings and all of them point to some line 
starting with OSG_DLLEXPORT_DECL1.

Is there some preprocessor declaration that I am missing or is it 
something else?

Thanks,
Divick

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