diff --git a/SConstruct b/SConstruct
index 7e6a640f7..c7ce23dd5 100644
--- a/SConstruct
+++ b/SConstruct
@@ -42,20 +42,27 @@ testrunner = testEnv.Program('testrunner', testFiles)
 Alias('testrunner',[testrunner])
 
 # GUI
-QTDIR = os.popen('qmake -query QT_INSTALL_DATA').read() 
-pkgpath = os.environ.get("PKG_CONFIG_PATH", "")
-pkgpath += ":%s/lib/pkgconfig" % QTDIR
-os.environ["PKG_CONFIG_PATH"] = pkgpath
-os.environ["QTDIR"] = QTDIR
-guiEnv = libEnv.Clone(tools=["default", "qt4"], toolpath=['.'])
-guiEnv.Append(CPPPATH = ['gui'])
-guiEnv.EnableQt4Modules(["QtGui", "QtCore"])
-rccs = [guiEnv.Qrc("gui/gui.qrc", QT4_QRCFLAGS="-name CppcheckGUI")]
-uiFiles = Glob('gui/*.ui')
-uis = [guiEnv.Uic4(ui) for ui in uiFiles]
-guiFiles = Glob('gui/*.cpp')+libObjects
-gui = guiEnv.Program(target="gui_cppcheck", source=[rccs, guiFiles])
-Alias('gui',[gui])
+emptyEnv = Environment()
+conf = Configure(emptyEnv)
+try:
+	QTDIR = os.popen('qmake -query QT_INSTALL_DATA').read() 
+	pkgpath = os.environ.get("PKG_CONFIG_PATH", "")
+	pkgpath += ":%s/lib/pkgconfig" % QTDIR
+	os.environ["PKG_CONFIG_PATH"] = pkgpath
+	os.environ["QTDIR"] = QTDIR
+	guiEnv = libEnv.Clone(tools=["default", "qt4"], toolpath=['.'])
+	guiEnv.Append(CPPPATH = ['gui'])
+	guiEnv.EnableQt4Modules(["QtGui", "QtCore"])
+	rccs = [guiEnv.Qrc("gui/gui.qrc", QT4_QRCFLAGS="-name CppcheckGUI")]
+	uiFiles = Glob('gui/*.ui')
+	uis = [guiEnv.Uic4(ui) for ui in uiFiles]
+	guiFiles = Glob('gui/*.cpp')+libObjects
+	gui = guiEnv.Program(target="gui_cppcheck", source=[rccs, guiFiles])
+	Alias('gui',[gui])
+except:
+	gui = Alias('gui','')
+	if 'gui' in COMMAND_LINE_TARGETS:
+		print "Qt4 not found. It is required for gui"
 
 # Execute testrunner
 test = AlwaysBuild(Alias("test", testrunner, "./$SOURCE"))