diff -purN blackbox-0.70.1.orig/configure blackbox-0.70.1/configure
--- blackbox-0.70.1.orig/configure	2009-12-19 11:07:07.000000000 +0100
+++ blackbox-0.70.1/configure	2009-12-19 11:09:39.000000000 +0100
@@ -1980,12 +1980,8 @@ am__tar='${AMTAR} chof - "$$tardir"'; am
 
 test "x$prefix" = "xNONE" && prefix="$ac_default_prefix"
 
-CPPFLAGS="$CPPFLAGS -I$prefix/include"
-LDFLAGS="$LDFLAGS -L$prefix/lib"
-if test "x$prefix" != "x/usr/local"; then
-  CPPFLAGS="$CPPFLAGS -I/usr/local/include"
-  LDFLAGS="$LDFLAGS -L/usr/local/lib"
-fi
+CPPFLAGS="$CPPFLAGS"
+LDFLAGS="$LDFLAGS"
 
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'