Bacula dependancy of libc5 --whatprovides no clue

[Harry Putnam]

Installing the bacula pkgs built from *.src.rpm from sourcforge and I
hit one dependancy that a quick yummer won't solve.

It says libc5 is required but I can't find anything that provides
libc5.   I thought maybe a compat package, but running a whatprovides
against the database rpmdb-fedora-3-0.20040803:

Gets no hits:
  rpm --redhatprovides libc5
 no package provides libc5

Any clues what will fix this?