How do I use the Boost libraries in a qmake project?

Some days ago I compiled Boost ver. 1.53.0 for VS2012. It works fine, compiles fine. Now I want to use Boost with Qt Creator. In the .pro file I've included

INCLUDEPATH += C:boostboost_1_53_0  -lboost_filesystem
LIBS += C:/boost/boost_1_53_0/stage/lib/

But when I compile I get 2 errors:

:-1: error: cannot find C:/boost/boost_1_53_0/stage/lib/: Permission denied
collect2.exe:-1: error: error: ld returned 1 exit status

What should I do? I've googled but seems I'm the first with this error.