[FEATURE REQUEST] CMake Subdirectory Support

[Nedra1998]

Is your feature request related to a problem? Please describe. In my projects, I prefer to have all the dependencies as submodules, which are then included in the projects CMake build system by add_subdirectory. However, it seems that this does not work with oiio.

I think that this is due to lines such as 128, where it requires oiio to be built in CMAKE_BINARY_DIR, which may not be the case if it is in a subdirectory.

Describe the solution you'd like Reconfiguration of the CMake files such that they do not rely directly on CMAKE_BINARY_DIR, but instead use CMAKE_CURRENT_BINARY_DIR, so that the project can be compiled as a dependency of other projects.

[lgritz]

I'm not sure how to test this and know that I've done it correctly.

If you know what needs to be done, I don't suppose you'd be willing to take a stab at it and submit a PR?

[Nedra1998]

At the moment I don't have the time to take a stab at it (I can try in a few weeks). But I made a repository which I would expect to compile successfully (https://github.com/Nedra1998/oiio_test). However, I am unable to compile this repo on my machine.

If this is just an issue with my system please let me know.