--- OpenSceneGraph-3.5.1/CMakeLists.txt.orig	2015-11-09 18:52:06.000000000 +0300
+++ OpenSceneGraph-3.5.1/CMakeLists.txt	2015-11-11 14:14:03.911230800 +0300
@@ -668,6 +668,9 @@
     FIND_PACKAGE(OurDCMTK)
     FIND_PACKAGE(FFmpeg)
     FIND_PACKAGE(GStreamer COMPONENTS app pbutils)
+    IF(GStreamer_FOUND)
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GStreamer_CFLAGS}")
+    ENDIF()
     FIND_PACKAGE(GLIB COMPONENTS gobject)
     FIND_PACKAGE(DirectShow)
     FIND_PACKAGE(SDL2)
