iphone - Let subproject use external library in iOS -

There is a problem managing all projects in iOS. I have projects I>

Subproject B and Subproject C should be given, but there is a problem: A, B and C use the same Library D (as described).

The solution I made was to leave Library D in Project C, one works with this solution, B (it can not read the library from C).

Is there a solution to allow project A to exclude leaving for library D?

Thank you!

One way to do this is to use Git submodules, in such a way, There are advantages to need, but still are able to use the code at different places.