diff --git a/SysBuild/xserv/MesaLib b/SysBuild/xserv/MesaLib
index ac159df..1254b15 100644
--- a/SysBuild/xserv/MesaLib
+++ b/SysBuild/xserv/MesaLib
@@ -119,5 +119,6 @@ mk() {
 }
 
 postmk() {
-	echo "Nothing to do for postmk()"
+	mkdir $TMPROOT/usr/include
+	ln -s /usr/X11R7/include/GL $TMPROOT/usr/include/GL
 }