support an 'embedded' platform target which turns off most parts of the
build.
diff --git a/src/gallium/SConscript b/src/gallium/SConscript
index eea32b1..d56c5c8 100644
--- a/src/gallium/SConscript
+++ b/src/gallium/SConscript
@@ -8,9 +8,10 @@
 	SConscript(os.path.join('drivers', driver, 'SConscript'))
 
 SConscript('state_trackers/python/SConscript')
-SConscript('state_trackers/glx/xlib/SConscript')
-SConscript('state_trackers/dri/SConscript')
-SConscript('state_trackers/xorg/SConscript')
+if platform != 'embedded':
+	SConscript('state_trackers/glx/xlib/SConscript')
+	SConscript('state_trackers/dri/SConscript')
+	SConscript('state_trackers/xorg/SConscript')
 
 if platform == 'windows':
 	SConscript('state_trackers/wgl/SConscript')