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config.guess and IBM Z


From: Simon Sobisch
Subject: config.guess and IBM Z
Date: Fri, 10 Jan 2025 23:22:40 +0100
User-agent: Mozilla Thunderbird

The script queries the output of uname, which is on the machine I test on (IBM Z with Unix System Services USS):

OS/390 S0W1 29.00 05 3931

because of OS/390 the script sets

    *:OS/390:*:*)
        GUESS=i370-ibm-openedition

The vendor ibm is correct, the os "openedition" _may_ be fine, but the cpu type is definitely not correct, standing for the 32bit mainframe architecture System/370 from 1970.


Instead, the cpu 3931 is part of the IBM Z architecture (z16, "Telum" from 2022).

Maybe _if_ there is any cpu part just place it in there (or do a mapping to zNN) or use a place holder like ibmZ?


See https://en.wikipedia.org/wiki/IBM_Z
https://www.redbooks.ibm.com/redbooks/pdfs/sg248951.pdf
https://www.nextplatform.com/2024/08/27/ibm-shows-off-next-gen-ai-acceleration-on-chip-dpu-for-big-iron/




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