Truble with compilation

Hi! Help me please.

I try compile PostgreSQL 7.0.2 on
OS:
    SCO UnixWare 2.1.3
    SCO UnixWare SDK
    ptf4001i, ptf4003b, ptf4004a, ptf4024b
machine:
    DELL PowerEdge 2100
    (Intel Pentium Pro 200MHz, 96Mb RAM, 4Gb and 9Gb Wide-SCSI HDD)

I have follow truble:

cc -o ecpg preproc.o pgc.o.... ../lib/typename.o ... -lgen -lcrypt -lld
-lnsl    \
    -lsocket -ldl -lm -lutil -ltermcap -lcurses -lc89 -Wl,-Bexport

Undefined            first referenced
  symbol                in file
nocachegetattr        pgc.o
UX:ld: ERROR: ecpg: fatal error: Symbol referencing errors. No output
written to ecpg.

What can I do? Help me please.

Best regards,
Igor N. Avtaev