[Rpm-maint] Building for older platforms

[Panu Matilainen]

On Sat, 15 Aug 2009, Axel Thimm wrote:

> Hi,
>
> is there a way to revert at rpmbuild time to non-sha256 and
> xz-payload, so the resulting package is valid on older platforms?
> E.g. some magic --define or similar that will make src.rpm packages
> built on F12 be installable on say RHEL3?

Sure, both the hash algorithm and payload are just macro configuration. In 
case of Fedora these are set in redhat-rpm-config, and can be overridden 
with --define or other macro config overriding the Fedora supplied 
defaults.

IIRC F12 only changes the payload compression for binary, not source 
packages so you shouldn't have to fiddle with that but the macros and 
the upstream defaults (compatible with RHEL 3 and even older) are as 
follows.

Payload compression with gzip:
%_source_payload       w9.gzdio
%_binary_payload       w9.gzdio

Use md5 for file hash algorithm:
%_source_filedigest_algorithm  1
%_binary_filedigest_algorithm  1

 	- Panu -