[osg-submissions] Use atomic reference counts

[Robert Osfield]

Hi Mathias,

Thanks for the explanations.

On Fri, Jun 20, 2008 at 6:45 AM, Mathias Fröhlich
<M.Froehlich at science-computing.de> wrote:
>> # Make the headers visible to everything
>> INCLUDE_DIRECTORIES(
>>     ${PROJECT_BINARY_DIR}/include
>>     ${OpenSceneGraph_SOURCE_DIR}/include
>>     ${OPENGL_INCLUDE_DIR}
>> )
>
> Well, this is required for out of source builds.
> The generated config file will be put into the build directory during build
> time. The build directory might be different from the source directory. So to
> make the compiler find this configuration file, it will need that include
> path.

OK, now understood, although it does still seem like an awkward
solution.  So what is the directory structure that will be produced?
What will happen during an install?

As it's require for out of source builds, would it be possible to just
include this for out of source builds?  Adding what at times is a
superfluous include paths seems a bit inappropriate.

Right now I'll merge this change, but I'm not comfortable with it and
will leave this topic open.

Robert.