bwm-tools compile error resolve.

when compile bwm-tools-0.3.0.tar.gz  in rhel6 (64bit)

error message shows

In file included from ../include/flow.h:30,                                                                  
                 from ../include/autoclass.h:29,                                                             
                 from xmlConf.c:32:                                                                          
/usr/include/linux/netfilter.h:55: error: field 'in' has incomplete type

/usr/include/linux/netfilter.h:56: error: field 'in6' has incomplete type  

resolve:

vi /usr/include/linux/netfilter.h  (add some c header)

#include <linux/types.h>
#include <netinet/in.h>
#include <stdarg.h>
#include <getopt.h>
#include <netdb.h>
#include <sys/stat.h>
#include <errno.h>