Remove the annoying autoconf 2.5x cache directory in buildconf:
Index: buildconf
===================================================================
RCS file: /home/cvspublic/apr-util/buildconf,v
retrieving revision 1.4
diff -u -r1.4 buildconf
--- buildconf 26 Dec 2001 20:45:45 -0000 1.4
+++ buildconf 3 Feb 2002 13:43:25 -0000
@@ -1,7 +1,7 @@
#!/bin/sh
# Remove aclocal.m4 as it'll break some builds...
-rm -f aclocal.m4
+rm -rf aclocal.m4 autom4te.cache
#
# Generate the autoconf header (include/apu_config.h) and ./configure
