How to combine two projects into one project?

问题

I want to add an existing project in my existing developed project. I have tried drag those project in my developed project and set the header and other linker flag. I have access only forward declaration using this but I want access imprort "subprojectcontroller.h" but i didn't access those file. Can you please provide proper steps.

second project does not have static library.

Thanks Kiran

来源：https://stackoverflow.com/questions/24014546/how-to-combine-two-projects-into-one-project