Usually when developing C/C++ project we specify linked libraries in a Makefile. With BlackBerry 10 Cascades project, the libraries can be added in the .pro file. This file is less clouded than the Makefile and easily manageable. For example, if you are developing a crypto app, you need to link the crypto library which is huapi. Add the below to the .pro file.

LIBS += -lhuapi

Else we will get errors like undefined reference to symbol and error adding symbols: DSO missing from command line.