Windows-4.7.4/mkspecs/features/symbian/qt_config.prf

load(qt_config)

!contains(QMAKE_HOST.os, "Windows") {
    # Test for the existence of lower cased headers, a sign of using Gnupoc.
    # Note that the qmake "exists" test won't do because it is case insensitive.
    system("test -f $${EPOCROOT}epoc32/include/akndoc.h") | system("test -f $${EPOCROOT}epoc32/include/mw/akndoc.h") {
        CONFIG += is_using_gnupoc
    }
}