I got a problem to install qmail with component + spamassassin + clamav in fedora core3. I had patch all the component and try to compile but it failed.
The error is: -

./load tcpserver rules.o remoteinfo.o timeoutconn.o cdb.a \
dns.a time.a unix.a byte.a `cat socket.lib`
tcpserver.o(.text+0x555): 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+0xbf): 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] Error 1

i need help since i have no choice to install to another distro

This error comeout when i try to install ucspi-tcp, daemontools in source