diff --git a/dtool/Config.pp b/dtool/Config.pp
index 9e27543718..007b1be290 100644
--- a/dtool/Config.pp
+++ b/dtool/Config.pp
@@ -107,6 +107,11 @@
 #define ZLIB_INCLUDE
 #define ZLIB_LIB
 
+// Is the sox libst library installed, and where?
+#define HAVE_SOXST 1
+#define SOXST_INCLUDE
+#define SOXST_LIB
+
 // Is OpenGL installed, and where?
 #define HAVE_GL 1
 #define GL_INCLUDE
diff --git a/dtool/LocalSetup.pp b/dtool/LocalSetup.pp
index 00f06a1132..6eb241bffe 100644
--- a/dtool/LocalSetup.pp
+++ b/dtool/LocalSetup.pp
@@ -79,6 +79,13 @@ $[define] HAVE_ZLIB 1
 $[undef] HAVE_ZLIB
 #endif
 
+/* Define if we have sox libst installed.  */
+#if $[HAVE_SOXST]
+$[define] HAVE_SOXST 1
+#else
+$[undef] HAVE_SOXST
+#endif
+
 /* Define if we have OpenGL installed and want to build for GL.  */
 #if $[HAVE_GL]
 $[define] HAVE_GL 1
diff --git a/panda/Config.pp b/panda/Config.pp
index 9e27543718..007b1be290 100644
--- a/panda/Config.pp
+++ b/panda/Config.pp
@@ -107,6 +107,11 @@
 #define ZLIB_INCLUDE
 #define ZLIB_LIB
 
+// Is the sox libst library installed, and where?
+#define HAVE_SOXST 1
+#define SOXST_INCLUDE
+#define SOXST_LIB
+
 // Is OpenGL installed, and where?
 #define HAVE_GL 1
 #define GL_INCLUDE
diff --git a/panda/src/dgraph/Sources.pp b/panda/src/dgraph/Sources.pp
index 770fa899c3..177a639e2d 100644
--- a/panda/src/dgraph/Sources.pp
+++ b/panda/src/dgraph/Sources.pp
@@ -53,7 +53,9 @@
     vec4DataTransition.h vectorDataAttribute.I vectorDataAttribute.h \
     vectorDataTransition.I vectorDataTransition.h
 
-  #define IGATESCAN all
+  #define IGATESCAN \
+    dataNode.cxx dataRelation.cxx \
+    dataGraphTraversal.cxx
 
 #end lib_target