What is graceful way to verride subproject's LIBPATH?

I have SUBDIRS project 1 and SUBDIRS project 2.
I want to include some subprojects from project 2 in project 1 to use them where.
But I've encountered problem: project 2 subprojects libs compile into project2/bin/config
while project 1 expects them in the project1/bin/config
That wouldn't be that hard to ad p2 path to libs manually to p1 if not for configs. Not only you'll have to account for them changing (that's not that hard) but project2 uses different config naming scheme (it also appeneds architecture to the name, but not always - there are exceptionss for certain archs).
Basically I want to somehow, without affecting second project greatly, be able to use and link to it's libs.