--- libnids-1.23.orig/configure.in	2006-05-01 19:14:51.000000000 +0200
+++ libnids-1.23/configure.in	2009-06-12 22:16:51.000000000 +0200
@@ -65,7 +65,7 @@ AC_ARG_WITH(libpcap,
      ;;
   *)
      AC_MSG_RESULT($withval)
-     if test -f $withval/pcap.h -a -f $withval/libpcap.a; then
+     if test -f $withval/include/pcap.h -a -f $withval/lib/libpcap.a; then
         owd=`pwd`
         if cd $withval; then withval=`pwd`; cd $owd; fi
 	PCAP_CFLAGS="-I$withval -I$withval/bpf"