27.11.2012, 17:15, "Sergey" <sh0375 at gmail.com>: > I didn't link with zlib at all. > I solved problem adding this line to the pro file: > > include(...qt/4.7.4/qt-everywhere-opensource-src-4.7.4/src/3rdparty/zlib_dependency.pri) Use -lz instead. Works for any Unix-like OS including Mac. -- Regards, Konstantin