Headers in Ogre framework on macOS don't have Threading subfolder

[danielsefton]

System Information

• Ogre Version: 14.0.1 & 13.6.5
• Operating System / Platform: macOS Ventura
• RenderSystem: N/A

Detailed description

When OGRE_BUILD_LIBS_AS_FRAMEWORKS is set in CMake on macOS, it builds Ogre as a framework, and in this framework is a Headers folder.

It would be convenient to be able to set the header search path to this directory in an Ogre project.

However, due to the threading header files not being inside a Threading subfolder in the framework, I can't do this. I have to manually copy across the Ogre includes alongside the framework every time, which can lead to mismatches.

I don't know if a Threading subfolder should be added to the framework itself, or if the threading header files should just be moved to the root includes folder, either solution would work. I think just adding a subfolder to the framework would not be as much of a breaking change.

[paroj]

I think just adding a subfolder to the framework would not be as much of a breaking change.

sounds good. Feel free to create a PR