ld: library not found for -lReactiveCocoa

Here is my problem:

I`ve got a project already,today i had it cococPods managed for i want to use"ReactiveCocoa" in my project.

After i set up the pod,and build it,this error occured;

ld: library not found for -lReactiveCocoa

I have checked the Target`s "Library Search Paths" setting ,it seems allright;

$(inherited)

So i was confused.

I want to konw where did it inhrit with?