+ifneq ($(wildcard /usr/lib/libcrypt.*),)
+HAVE_CRYPT_H=y
+endif
+
+# Uncomment the next line to include support for PPP packet filtering.
+# This requires that the libpcap library and headers be installed
+# and that the kernel driver support PPP packet filtering, which it
+# doesn't yet.
+#FILTER=y