-o httpd buildmark.o modules.o modules/standard/libstandard.a modules/php3
/libphp3.a main/libmain.a ./os/unix/libos.a ap/libap.a regex/libregex.a lib/expa
t-lite/libexpat.a  -Wl,-rpath,/usr/lib/mysql  /root/imap-4.5/lib/c-client.a -lgd
 -L/usr/lib/mysql -lmysqlclient -Lmodules/php3 -L../modules/php3 -L../../modules
/php3 -lmodphp3        -L/usr/local/sybase//lib -L/usr/local/sybase//lib -lsybdb
               -lpam -lm -ldl -lcrypt -lnsl  -lresolv  -lm -lcrypt -ldb
/usr/local/sybase//lib/libsybdb.a(tcp_io.o): In function `tcp_open':
tcp_io.o(.text+0x0): multiple definition of `tcp_open'
/root/imap-4.5/lib/c-client.a(osdep.o):/root/imap-4.5/c-client/tcp_unix.c:128: f
irst defined here
/usr/bin/ld: Warning: size of symbol `tcp_open' changed from 919 to 1243 in tcp_
io.o
/usr/local/sybase//lib/libsybdb.a(tcp_io.o): In function `tcp_close':
tcp_io.o(.text+0x774): multiple definition of `tcp_close'
/root/imap-4.5/lib/c-client.a(osdep.o):/root/imap-4.5/c-client/tcp_unix.c:554: f
irst defined here
/usr/bin/ld: Warning: size of symbol `tcp_close' changed from 371 to 186 in tcp_
io.o
collect2: ld returned 1 exit status
make[2]: *** [target_static] Error 1
make[2]: Leaving directory `/usr/src/apache_1.3.9/src'
make[1]: *** [build-std] Error 2
make[1]: Leaving directory `/usr/src/apache_1.3.9'
make: *** [build] Error 2
[root@fritz apache_1.3.9]#            
--------------------------------------------------------------------
proposed solution
tcp_open ->tcp_open2 
tcp_close ->tcp_close2 
in mail.c
in tcp_unix.c
in tcp.h
in the c-client of imap could resolve this problem