Originally, Intel's approach with Linux support was to recommend that the open-source SDK Librealsense was used, and that users could add their own algorithms to it rather than have ones supplied by Intel. To quote Intel's Librealsense information page, "The librealsense project is separate from the production software stack available in the Windows Intel RealSense SDK. librealsense only encompasses camera capture functionality without additional computer vision algorithms".
There is also a RealSense SDK for Linux, designed for use with the new RealSense ZR300 camera. Please study the information about it to see if it meets your needs. Thanks!