Index: /trunk/pois/INSTALL
===================================================================
--- /trunk/pois/INSTALL	(revision 3837)
+++ /trunk/pois/INSTALL	(revision 3838)
@@ -37,4 +37,9 @@
 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 
+You need to set XPA_DIR to somewhere that the xpa libraries can be found;
+or (better) install the xpa stuff in $JHTREE/{lib,include}
+
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
 To build from scratch: