qmail를 설치하던 중..ucspi-tcp설치중 에러..

안녕하세요
qmail를 설치하던 중..
ucspi-tcp를 설치하다 다음과 같은 에러가 납니다.
(os:redhat 9)...
답변 부탁합니다...

./load tcpserver rules.o remoteinfo.o timeoutconn.o cdb.a \
dns.a time.a unix.a byte.a `cat socket.lib`
tcpserver.o(.text+0x55f): In function `doit':
: undefined reference to `errno'
remoteinfo.o(.text+0x63): In function `mywrite':
: undefined reference to `errno'
remoteinfo.o(.text+0xe7): In function `myread':
: undefined reference to `errno'
timeoutconn.o(.text+0x41): In function `timeoutconn':
: undefined reference to `errno'
timeoutconn.o(.text+0xc7): In function `timeoutconn':
: undefined reference to `errno'
cdb.a(cdb.o)(.text+0xce): more undefined references to `errno' follow
collect2: ld returned 1 exit status
make: *** [tcpserver] 오류 1