building rpm packages for older distributions.

[Panu Matilainen]

On 01/02/2012 08:38 PM, Elias Abacioglu wrote:
>
>
> R P Herrold skrev 2012-01-02 18:27:
>> On Mon, 2 Jan 2012, Elias Abacioglu wrote:
>>
>>> So the question is, is there a way to build packages with "legacy"
>>> support?
>>> Like some way to force the rpm to use other payload and filedigest
>>> methods
>>> that have wider support.
>>>
>>> Cause it feels kind of backwards to install centos 4 to build rpm
>>> packages
>>> that should work on old and new versions of rpm.
>>
>> I dunno about 'feels backward' -- later versions of RHEL, and thus
>> CentOS have moved to new forms of compression, etc, whose 'emergence
>> as desired' were not knowable to earlier versions of RPM
>>
>> The steps of 'ripping out xz compression' and later RPM 'enhancements'
>> is fairly mechanical', less so is addressing the addition of certain
>> dependency finding and other 'convenience' macros used in later RPM
>> versions
>>
>> That said, a 'general' path to building packages that do not require
>> invasive changes [1], is to build with the older tools, tweaking the
>> .spec file, as needed
>>
> Hi, well it's Centos 6.2 that has the strange deault settings.
> It seems to be:
> %_source_filedigest_algorithm 8
> %_binary_filedigest_algorithm 8
> %_binary_payload w2.xzdio
>
> So I guess I'll change it to
> %_source_filedigest_algorithm 1
> %_binary_filedigest_algorithm 1
>
> But I do not know which binary_payload is the one with most legacy
> support..
> Any suggestions of the binary_payload I should use?

"w9.gzdio" will produce packages that any old rpm out there can understand.

	- Panu -