Building an RPM on Fedora 12 for an older system

If you are building an RPM on a Fedora 12 system (or later) and you want that RPM to be installed on a system with an older version of rpm, such as an older Fedora or Centos, define these values in your ~/.rpmmacros.

%_binary_filedigest_algorithm 1
%_source_filedigest_algorithm 1
%_binary_payload w9.gzdio

This sets the hash algorithm and the payload compression used by RPM to be compatible with older versions of rpm. This avoids the following errors:

error: Failed dependencies:
rpmlib(FileDigests) <= 4.6.0-1 is needed by x
rpmlib(PayloadIsXz) <= 5.2-1 is needed by x

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