[Exim] Compilation problem

My apologies for being an idiot when it comes to compiling things, but I've
encountered the following and haven't a clue as to the cause.
I would have used an rpm for Mandrake Linux 9.0, but can't find one. :-(

TIA

gcc -c -O  -DCOMPILE_UTILITY -o util-spool_in.o spool_in.c
In file included from exim.h:341,
                 from spool_in.c:12:
dbstuff.h:101:16: db.h: No such file or directory
In file included from exim.h:341,
                 from spool_in.c:12:
dbstuff.h:527: parse error before "DB"
dbstuff.h:527: warning: no semicolon at end of struct or union
dbstuff.h:529: parse error before '}' token
dbstuff.h:529: warning: data definition has no type or storage class
In file included from exim.h:345,
                 from spool_in.c:12:
dbfunctions.h:11: parse error before '*' token
dbfunctions.h:12: parse error before '*' token
dbfunctions.h:13: parse error before '*' token
dbfunctions.h:13: parse error before "open_db"
dbfunctions.h:13: warning: data definition has no type or storage class
dbfunctions.h:14: parse error before '*' token
dbfunctions.h:15: parse error before '*' token
dbfunctions.h:16: parse error before '*' token
make[1]: *** [util-spool_in.o] Error 1
make[1]: Leaving directory

--
Robin Lynn Frank
Director of Operations
Paradigm-Omega, LLC
    ******
The need to do something is
inversely proportional to the
time available.