--- a/common/autoconf/spec.gmk.in	Wed Jul 05 18:43:09 2017 +0200
+++ b/common/autoconf/spec.gmk.in	Wed Mar 06 10:50:37 2013 +0100
@@ -285,6 +285,10 @@
 X_LIBS:=@X_LIBS@
 OPENWIN_HOME:=@OPENWIN_HOME@
 
+# DirectX SDK
+DXSDK_LIB_PATH=@DXSDK_LIB_PATH@
+DXSDK_INCLUDE_PATH=@DXSDK_INCLUDE_PATH@
+
 # The lowest required version of macosx to enforce compatiblity for
 MACOSX_VERSION_MIN=@MACOSX_VERSION_MIN@