diff --git a/panda/src/sgraph/Sources.pp b/panda/src/sgraph/Sources.pp
index 2f72fef8df..95a600c359 100644
--- a/panda/src/sgraph/Sources.pp
+++ b/panda/src/sgraph/Sources.pp
@@ -5,16 +5,20 @@
   #define TARGET sgraph
   #define LOCAL_LIBS \
     gobj putil graph mathutil linmath
+    
+  #define COMBINED_SOURCES $[TARGET]_composite1.cxx $[TARGET]_composite2.cxx    
 
   #define SOURCES \
-    camera.I camera.cxx camera.h config_sgraph.cxx config_sgraph.h \
-    geomNode.I geomNode.cxx geomNode.h geomTransformer.I \
-    geomTransformer.cxx geomTransformer.h modelNode.I modelNode.cxx \
-    modelNode.h modelRoot.I modelRoot.cxx modelRoot.h \
-    planeNode.I planeNode.cxx \
-    planeNode.h projectionNode.I projectionNode.cxx projectionNode.h \
-    renderTraverser.I renderTraverser.cxx renderTraverser.h \
-    switchNode.I switchNode.cxx switchNode.h
+     camera.I camera.h config_sgraph.h geomNode.I geomNode.h  \
+     geomTransformer.I geomTransformer.h modelNode.I modelNode.h  \
+     modelRoot.I modelRoot.h planeNode.I planeNode.h  \
+     projectionNode.I projectionNode.h renderTraverser.I  \
+     renderTraverser.h switchNode.I switchNode.h  
+
+  #define INCLUDED_SOURCES  \
+     camera.cxx config_sgraph.cxx geomNode.cxx geomTransformer.cxx  \
+     modelNode.cxx modelRoot.cxx planeNode.cxx projectionNode.cxx  \
+     renderTraverser.cxx switchNode.cxx 
 
   #define INSTALL_HEADERS \
     camera.I camera.h config_sgraph.h \
diff --git a/panda/src/sgraph/sgraph_composite1.cxx b/panda/src/sgraph/sgraph_composite1.cxx
new file mode 100644
index 0000000000..81a44d63de
--- /dev/null
+++ b/panda/src/sgraph/sgraph_composite1.cxx
@@ -0,0 +1,8 @@
+
+#include "geomNode.cxx"
+#include "geomTransformer.cxx"
+#include "modelNode.cxx"
+#include "modelRoot.cxx"
+#include "planeNode.cxx"
+
+
diff --git a/panda/src/sgraph/sgraph_composite2.cxx b/panda/src/sgraph/sgraph_composite2.cxx
new file mode 100644
index 0000000000..ca13bb40c0
--- /dev/null
+++ b/panda/src/sgraph/sgraph_composite2.cxx
@@ -0,0 +1,7 @@
+
+#include "config_sgraph.cxx"
+#include "camera.cxx"
+#include "projectionNode.cxx"
+#include "renderTraverser.cxx"
+#include "switchNode.cxx"
+