On 12.03.2015 20:57, zeljko wrote: > QMAKE_CXXFLAGS += -fpermissive should be added to the Qt4Pas.pro > > zeljko Thank you, I can compile now. And I added message in forum How to build QT4pas5.dll win64 http://forum.lazarus.freepascal.org/index.php/topic,27706.0.html