[adding opensg-users back to CC]
Hello Thomas,
On 07/06/2011 06:01 AM, Henn, Thomas wrote:
> attached you will find two zip files.
>
> test.zip includes my test.cpp (which is mainly 01hello.cpp plus the test code
> where I try to create some geo properties), the two log files and finally a
> recording of my test session including compiler settings and program output.
> If test.cpp is compiled with hidden visibility, creating the geo properties
> fails. But if test.cpp is compiled with default visibility, everything works
> fine...
thanks for sending these. The logs indeed are very similar and seem to
suggest that type registration works fine - strange...
> OpenSG.zip includes all changes I made in order to compile OpenSG itself with
> -fvisisbility=hidden. But any attempt to link the test program with the
> modified OpenSG libs ends in a lot of undefined references.
hmm, the errors you are getting seem to be of the forms:
1) undefined reference to `typeinfo for osg::GeoPropertyArrayInterface'
this might simply be because this type is not annotated with
OSG_SYSTEMLIB_DLLMAPPING (similar for other types in
GeoPropertyInterface.h) - perhaps also the reason GeoProperties don't
work for you?
2a) undefined reference to `osg::MField<osg::Point<short, 3u>,
0>::_fieldType'
these could be because the MField<> template itself is not marked
OSG_BASE_DLLMAPPING [1] nor is the static _fieldType member
instantiation in Source/Base/Field/OSGTypeInst.cpp
2b) undefined reference to
`osg::GeoProperty<osg::GeoPLengthsUI32PropertyDesc>::_type'
and similar here, the templates are not marked for dllimport/dllexport
and neither are the static member instantiations.
Cheers,
Carsten
[1] templates are in general not marked for dllimport/dllexport, mostly
because it is not necessary for that mechanism and so does not produce
linker errors ;) - visibility seems to have slightly different rules for
this case though
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