-# Check for correctly configured Qt5
-QTINCLUDES = $(shell pkg-config --cflags Qt5Core Qt5Widgets 2>/dev/null)
-QTLDLIBS = $(shell pkg-config --libs Qt5Core Qt5Widgets 2>/dev/null)
-MOC = $(shell pkg-config --variable=host_bins Qt5Core)/moc
-ifeq ($(QTINCLUDES), )
-# if Qt5 not found Check for correctly configured Qt4  
-       QTINCLUDES = $(shell pkg-config --cflags QtCore QtGui 2>/dev/null)
-       QTLDLIBS = $(shell pkg-config --libs QtCore QtGui 2>/dev/null)
-       MOC = $(shell pkg-config --variable=moc_location QtCore)
-endif
-ifeq ($(QTINCLUDES), )
-# if both pkg-config commands failed, search in common places
-       ifneq ($(QTDIR), )
-               QTINCLUDES = -I$(QTDIR)/include -I$(QTDIR)/include/QtCore -I$(QTDIR)/include/QtGui
-               QTLDLIBS = -L$(QTDIR)/lib -lQtCore4 -lQtGui4
-               ifneq ($(wildcard $(QTDIR)/include/QtWidgets),)
-                       QTINCLUDES += -I$(QTDIR)/include/QtWidgets
-                       QTLDLIBS = -L$(QTDIR)/lib -lQt5Widgets -lQt5Gui -lQt5Core
+ifneq (,$(findstring WITH_GUI,$(APP_CFLAGS)))
+       # Check for correctly configured Qt5
+       QTINCLUDES = $(shell pkg-config --cflags Qt5Core Qt5Widgets 2>/dev/null)
+       QTLDLIBS = $(shell pkg-config --libs Qt5Core Qt5Widgets 2>/dev/null)
+       MOC = $(shell pkg-config --variable=host_bins Qt5Core)/moc
+       UIC = $(shell pkg-config --variable=host_bins Qt5Core)/uic
+       ifeq ($(QTINCLUDES), )
+       # if Qt5 not found check for correctly configured Qt4   
+               QTINCLUDES = $(shell pkg-config --cflags QtCore QtGui 2>/dev/null)
+               QTLDLIBS = $(shell pkg-config --libs QtCore QtGui 2>/dev/null)
+               MOC = $(shell pkg-config --variable=moc_location QtCore)
+               UIC = $(shell pkg-config --variable=uic_location QtCore)
+       else
+               CXXFLAGS += -std=c++11 -fPIC
+       endif
+       ifeq ($(QTINCLUDES), )
+       # if both pkg-config commands failed, search in common places
+               ifneq ($(QTDIR), )
+                       QTINCLUDES = -I$(QTDIR)/include -I$(QTDIR)/include/QtCore -I$(QTDIR)/include/QtGui
+                       QTLDLIBS = -L$(QTDIR)/lib -lQtCore4 -lQtGui4
+                       ifneq ($(wildcard $(QTDIR)/include/QtWidgets),)
+                               QTINCLUDES += -I$(QTDIR)/include/QtWidgets
+                               QTLDLIBS = -L$(QTDIR)/lib -lQt5Widgets -lQt5Gui -lQt5Core
+                               CXXFLAGS += -std=c++11 -fPIC
+                       endif
+                       MOC = $(QTDIR)/bin/moc
+                       UIC = $(QTDIR)/bin/uic