Index: src/libcfa/Makefile.am
===================================================================
--- src/libcfa/Makefile.am	(revision 2988eebb61a23bfe28efea59b2bdd2e4fb6028c1)
+++ src/libcfa/Makefile.am	(revision 6363ad16a717ec42cd099b9b8b756b78672c2ecf)
@@ -81,3 +81,3 @@
 
 maintainer-clean-local:
-	-rm -rf ${includedir}/* ${libdir}/*
+	-rm -rf ${CFA_INCDIR} ${CFA_LIBDIR}
Index: src/libcfa/Makefile.in
===================================================================
--- src/libcfa/Makefile.in	(revision 2988eebb61a23bfe28efea59b2bdd2e4fb6028c1)
+++ src/libcfa/Makefile.in	(revision 6363ad16a717ec42cd099b9b8b756b78672c2ecf)
@@ -1161,5 +1161,5 @@
 
 maintainer-clean-local:
-	-rm -rf ${includedir}/* ${libdir}/*
+	-rm -rf ${CFA_INCDIR} ${CFA_LIBDIR}
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.