QT -= gui widgets include(../qttest.pri) QT += core-private exists(/usr/include/boost/unordered/unordered_set.hpp) { DEFINES += HAS_BOOST } exists(/usr/local/include/boost/unordered/unordered_set.hpp) { DEFINES += HAS_BOOST INCLUDEPATH += /usr/local/include } SOURCES += tst_offsets.cpp