Added --enable-packetlog to allow easy use of built-in packet logger.

Note: EXPERIMENTAL - meant for bug hunting.

acconfig.h

@@ -100,5 +100,8 @@
 /* Define this to something appropriate for declaring 0 length arrays */
 #undef ZERO_LENGTH_ARRAY
 
+/* Define this if you want to have packet logging */
+#undef PACKET_LOGGING
+
 @BOTTOM@
 #endif // __config_h_

configure.in

@@ -1001,6 +1001,11 @@ else
 	AC_MSG_RESULT(no)
 fi
 
+AC_ARG_ENABLE(packetlog,
+	[  --enable-packetlog	   compile with packet logger (for development)],
+	packetlog=$enable_packetlog
+)
+
 AC_ARG_ENABLE(optimize,
 	[  --disable-optimize      compile without optimizations (for development)],
 	optimize=$disable_optimize,
@@ -1044,6 +1049,16 @@ else
 	CFLAGS="$CFLAGS -O"
 fi
 
+AC_MSG_CHECKING(for packet logging)
+if test "x$packetlog" = xyes; then
+	AC_MSG_RESULT(yes)
+	AC_DEFINE(PACKET_LOGGING)
+else
+	AC_MSG_RESULT(no)
+fi
+
+AM_CONDITIONAL(PACKETLOG, test "x$packetlog" = "xyes")
+
 dnl CFLAGS for release and devel versions
 AC_ARG_ENABLE(profile,
 	[  --enable-profile        compile with profiling (for development)],