I am trying to install opencv 2.4.13 for IOS to be used fir IOS project build in Xcode 7.3.1 I have downloaded opencv from here: https://sourceforge.net/projects/opencvlibrary/files/opencv-ios/2.4.13/opencv2.framework.zip/download I only found instruction how to install opencv from sources and I am getting errors, In the meantime I was wondering how to install pre-built framework. I have simply extracted framework from the zip file and dragged it in the project area that uswed Add Fameworks -> Add Other , and selected the opencv2.framework i had just extracted but project does not link. I think Iam missing some basics here. Appreciate some advise.