-ifneq (,$(findstring MINGW,$(platform)))
-CXXFLAGS = -I$(QTDIR)/include -I$(QTDIR)/include/QtCore -I$(QTDIR)/include/QtGui
-QTLDLIBS = -L$(QTDIR)/lib -lQtCore4 -lQtGui4
-MOC = $(QTDIR)/bin/moc
-LUAPLATFORM = mingw
+
+ifneq (,$(findstring MINGW,$(platform)))
+ LDLIBS += -L/mingw/lib -lgdi32
+ CFLAGS += -I/mingw/include
+ CXXFLAGS = -I$(QTDIR)/include -I$(QTDIR)/include/QtCore -I$(QTDIR)/include/QtGui
+ MOC = $(QTDIR)/bin/moc
+ LUAPLATFORM = mingw
+ ifneq ($(wildcard $(QTDIR)/include/QtWidgets),)
+ CXXFLAGS += -I$(QTDIR)/include/QtWidgets
+ QTLDLIBS = -L$(QTDIR)/lib -lQt5Core -lQt5Gui -lQt5Widgets
+ else
+ QTLDLIBS = -L$(QTDIR)/lib -lQtCore4 -lQtGui4
+ endif
+
+ # QT version, 4 or 5
+ qtplatform = $(shell $(MOC) -v)
+ ifneq (, $(findstring moc 5,$(qtplatform)))
+ CXXFLAGS = -I$(QTDIR)/include -I$(QTDIR)/include/QtCore -I$(QTDIR)/include/QtGui -I$(QTDIR)/include/QtWidgets -I/mingw/include
+ QTLDLIBS = -L$(QTDIR)/lib -lQt5Core -lQt5Gui -lQt5Widgets
+ else
+ CXXFLAGS = -I$(QTDIR)/include -I$(QTDIR)/include/QtCore -I$(QTDIR)/include/QtGui
+ QTLDLIBS = -L$(QTDIR)/lib -lQtCore4 -lQtGui4
+ endif
+