>My -current build last night had the following problem with libipsec:
>
>all ===> libipsec
>cc -O2 -g  -Wall -Wstrict-prototypes -Wmissing-prototypes
>-Wpointer-arith -Wno-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
>
>I reverted policy_parse.y to 1.3 and it seems to work now.

	you need the latest yacc, i guess.  see src/UPDATING.

itojun