The OpenImageIO JPEG library path build argument has changed in recent OIIO version from `JPEG_LIBRARY` / `JPEG_INCLUDE_DIR` to `JPEG_ROOT` and `libjpeg-turbo_ROOT` (similarly to the `OpenJPEG_ROOT` argument). Before this commit, OIIO library builds on macOS would either error out or wrongly link to the system jpeg-turbo library instead. Pull Request: https://projects.blender.org/blender/blender/pulls/128961