On 12/09/2012 23:44, ext Sylvain Pointeau wrote: > QMAKE_TARGET and TARGET in the makefile were blank. > once I changed them, it was ok, at least trying to compile. You should not need to specify TARGET. qmake chooses a default value. But .pro files that explicitely set TARGET to be empty will produce empty TARGET variables in Qt 5. Cheers, Jörg