Under SCO OS5 - ./configure with samba 2.0.7

Thu Apr 5 06:02:20 GMT 2001

checking if large file support can be enabled                  
no                                                             
checking configure summary                                     
WARNING: no shared memory. Running with slow locking code      
WARNING: No automated network interface determination          
ERROR: no seteuid method available                             
configure: error: summary failure. Aborting config             
<SCO_SV>             

What can I do to build the software, as no prebuilt one exists.