Make sure OpenSceneGraph is built with /Zc:__cplusplus when using MSVC
This is required to enable __cplusplus
macros. So move constructors for osg::ref_ptr
is defined via conditional compliation here. This should be used for artifacts placed in the dependencies repo. This is important optimization as described here.
Creating this issue in this repo for better visibility and marking it as blocker for 0.49. In general I'd prefer the script building OpenSceneGraph for Windows being located in the open source repo so anyone can see it and suggest changes.