[CMake] About Visual Studio 6 generator

[Brad King]

Sylvain Prat wrote:
> I'm wondering why cmake rules do not appear in the projects settings for visual studio 6 workspaces. I had a deep look into the generated projects and it seems that custom rules are hacks and are not considered as pre-build, post-build or custom-build rules.
> 
> Is there a reason why it is done that way ? Can you explain how it works (USERDEP_HACK) ??

The USERDEP_HACK is the only way we could find to reliably add custom 
dependencies.  I agree it's ugly but at least the builds work.  If you 
can find a better way please post a patch.

Thanks,
-Brad