sha256sum need by icedtea6

Wed Jul 14 08:14:29 PDT 2010

I am trying to build icedtea6-1.8 on CentOS 4 so that the resulting binaries
will be portable across most 2.6 Linux flavors.   (Note that I am already
doing this for basic OpenJDK 6 builds as per availability
http://www.OpenSCG.org )

Seems like sha256sum is part of coreutils for RHEL 5 and beyond.  Can anyone
offer advice on an RPM to install or a source build?
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