编译内核问题

Catch

../../../contrib/ipfilter/netinet/ip_fil.c: In function `fr_check_wrapper':
../../../contrib/ipfilter/netinet/ip_fil.c:319: error: `PFIL_OUT' undeclared (first use in this function)
../../../contrib/ipfilter/netinet/ip_fil.c:319: error: (Each undeclared identifier is reported only once
../../../contrib/ipfilter/netinet/ip_fil.c:319: error: for each function it appears in.)
../../../contrib/ipfilter/netinet/ip_fil.c: In function `iplattach':
../../../contrib/ipfilter/netinet/ip_fil.c:376: warning: unused variable `ph_inet'
../../../contrib/ipfilter/netinet/ip_fil.c: At top level:
../../../contrib/ipfilter/netinet/ip_fil.c:317: warning: `fr_check_wrapper' defined but not used
*** Error code 1

Stop in /usr/src/sys/i386/compile/onicp.


我想让内核支持IPFILTER。于是，在内核那里，加入了options IPFILTER
不知道为什么，make的时候，就是提示出错。

我的BSD是5.2的。