>One more error encountered (after I hacked the error I described earlier to
>proceed with the build):
>
>cc -O2 -g -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wn
>o-uninitialized -Werror -DIPSEC_DEBUG -DIPSEC -DINET6
>-I/usr/src/lib/libipsec -I. -DYY_NO_UNPUT -c policy_parse.c
>cc1: warnings being treated as errors
>/usr/src/lib/libipsec/policy_parse.y: In function `policy_parse':
>/usr/src/lib/libipsec/policy_parse.y:400: warning: implicit declaration of
>function `__libyyparse'
>
>*** Error code 1

	my guess is you have obsolete version of yacc.

itojun