Milter-greylist

Just tried to use this compile config to compile gl-2.1.12 with Bind9:

./configure --with-user=smmsp --enable-dnsrbl --with-libbind && make

During the build with Bind9, I noticed these warnings. Are they fatal?
Compliled finished okay but, I haven't installed yet:

=================================================
config.status: creating config.h
gcc -g -O2 -Wall -Iyes/include/bind -Iyes/include -D_BSD_SOURCE -c
milter-greylist.c
gcc -g -O2 -Wall -Iyes/include/bind -Iyes/include -D_BSD_SOURCE -c pending.c
gcc -g -O2 -Wall -Iyes/include/bind -Iyes/include -D_BSD_SOURCE -c sync.c
sync.c: In function `sync_send':
sync.c:283: warning: int format, different type arg (arg 4)
sync.c:295: warning: int format, different type arg (arg 5)
sync.c:313: warning: int format, different type arg (arg 5)
sync.c:329: warning: int format, different type arg (arg 5)
sync.c:339: warning: int format, different type arg (arg 5)
sync.c: In function `peer_connect':
sync.c:397: warning: int format, different type arg (arg 5)
sync.c:454: warning: int format, different type arg (arg 5)
sync.c:536: warning: int format, different type arg (arg 5)
sync.c:549: warning: int format, different type arg (arg 5)
sync.c:563: warning: int format, different type arg (arg 5)
sync.c:571: warning: int format, different type arg (arg 5)
sync.c: In function `sync_queue':
sync.c:1232: warning: int format, different type arg (arg 4)
sync.c: In function `select_protocol':
sync.c:1415: warning: int format, different type arg (arg 5)
sync.c:1424: warning: int format, different type arg (arg 5)
gcc -g -O2 -Wall -Iyes/include/bind -Iyes/include -D_BSD_SOURCE -c dnsrbl.c
gcc -g -O2 -Wall -Iyes/include/bind -Iyes/include -D_BSD_SOURCE -c list.c
bison -y -p`echo conf_yacc.c|sed 's/^\([^_]\{1,\}_\).*$/\1/'` conf_yacc.y
mv y.tab.c conf_yacc.c
flex -oconf_lex.c conf_lex.l
gcc -g -O2 -Wall -Iyes/include/bind -Iyes/include -D_BSD_SOURCE -c conf_yacc.c
bison -y -p`echo dump_yacc.c|sed 's/^\([^_]\{1,\}_\).*$/\1/'` dump_yacc.y

etc, etc........... all okay beyond this
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(^_^)
Happy trails,
Jack L. Stone

System Admin
Sage-american