--- ./philips/Makefile.in.orig	Wed Nov 10 18:53:59 1999
+++ ./philips/Makefile.in	Wed Nov 10 18:54:27 1999
@@ -102,7 +102,7 @@
 LTLIBRARIES =  $(drivers_LTLIBRARIES)
 
 
-DEFS = @DEFS@ -I. -I$(srcdir) -I..
+DEFS = @DEFS@ -I. -I$(srcdir) -I.. -I${prefix}/include
 CPPFLAGS = @CPPFLAGS@
 LDFLAGS = @LDFLAGS@
 LIBS = @LIBS@
