To build Debian packages correctly, add a build-dependency for libmeegotouch-dev for MeeGo Touch applications and for applauncherd-dev for other cases. The correct flags can be automatically obtained as follows.
For MeeGo Touch applications:
pkg-config --cflags meegotouch-boostable pkg-config --libs meegotouch-boostable
For QML applications:
pkg-config --cflags qdeclarative-boostable pkg-config --libs qdeclarative-boostable
For Qt applications:
pkg-config --cflags qt-boostable pkg-config --libs qt-boostable