--- udav/CMakeLists.txt.orig	2015-03-21 14:42:01.325397847 +0600
+++ udav/CMakeLists.txt	2015-03-21 14:42:15.145923191 +0600
@@ -38,7 +38,7 @@ endif(enable-qt5)
 add_executable(udav ${udav_src} ${udav_moc_src} ${udav_rc_src})
 #set_target_properties(udav PROPERTIES COMPILE_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
 if(enable-qt5)
-	target_link_libraries(udav mgl-qt5)
+	target_link_libraries(udav mgl-qt5 X11)
 	qt5_use_modules(udav Core Widgets Gui PrintSupport)
 else(enable-qt5)
 	target_link_libraries(udav mgl-qt4)