Error cant link the input file ofxUI-master/src

I am getting the same error: cant open the input file \ofxUI-master\src. I am trying to build only the openframeworksLib, I am getting the error cant open the input file \ofxUI-master\src. I have not included the \ofxUI-master\src in any additional dependencies of the project. Please help me. Windows version:8 openframe works version:0.9.3