OpenCV 3.0 undefined reference to `WebPEncodeLosslessBGRA'

I am trying to compile OpenCV on Ubuntu 12.04 LTS. The build keeps failing with the following error: ../../lib/libopencv_imgcodecs.so.3.0.0: undefined reference to `WebPEncodeLosslessBGRA' ../../lib/libopencv_imgcodecs.so.3.0.0: undefined reference to `WebPEncodeLosslessBGR' The closest advice I've found is this: http://code.opencv.org/issues/2980 But -- the solution is (i) for OpenCV 2.4.5 and (ii) doesn't work for me. Any help would be gratefully received. Please let me know what extra information I can post.