hpux squid make error.. please help me..

Hi all.

system details :
HP-UX dev_web B.11.11 U 9000/800 141434625 unlimited-user license
GNU Make 3.80
gcc (GCC) 4.0.2

I want to install squid on my web server.
../configure -> success
gmake --> error (make also error..)
error details :
depmode=gcc3 /bin/sh ../cfgaux/depcomp \
gcc -DHAVE_CONFIG_H
-DDEFAULT_CONFIG_FILE=\"/usr/local/squid/etc/squid.conf\" -I. -I.
-I../include -I. -I. -I../include -I../include -g -O2 -Wall -c `test
-f multicast.c || echo './'`multicast.c
multicast.c: In function 'mcastJoinGroups':
multicast.c:55: error: storage size of 'mr' isn't known
multicast.c:69: error: invalid application of 'sizeof' to incomplete
type 'struct ip_mreq'
multicast.c:55: warning: unused variable 'mr'
gmake[3]: *** [multicast.o] Error 1
gmake[3]: Leaving directory `/app/search/tarDir/squid-2.5.STABLE13/src'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory `/app/search/tarDir/squid-2.5.STABLE13/src'
gmake[1]: *** [all] Error 2
gmake[1]: Leaving directory `/app/search/tarDir/squid-2.5.STABLE13/src'
gmake: *** [all-recursive] Error 1

what's the problem?

someone told me using gmake instead of make..
but it doesn't work..