File qt5-use-system-zlib-in-host-libs.patch of Package mingw32-libqt5-qtbase-static
--- a/src/tools/bootstrap/bootstrap.pro 2014-01-01 13:22:42.367935800 -0600
+++ b/src/tools/bootstrap/bootstrap.pro 2014-01-02 23:38:20.707687700 -0600
@@ -148,7 +148,7 @@ macx {
*-g++*: QMAKE_CXXFLAGS += -ffunction-sections
-if(contains(QT_CONFIG, zlib)|cross_compile):include(../../3rdparty/zlib.pri)
+if(contains(QT_CONFIG, zlib)):include(../../3rdparty/zlib.pri)
else:include(../../3rdparty/zlib_dependency.pri)
win32:LIBS += -luser32 -lole32 -ladvapi32