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Re: It's target deprecation season again!
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Zack Weinberg <zack at codesourcery dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Fri, 18 Oct 2002 21:46:02 -0400
- Subject: Re: It's target deprecation season again!
>>>>> Zack Weinberg writes:
Zack> The i370 and s390 targets are for the same architecture. They are not
Zack> entirely redundant; each supports operating environments that the
Zack> other doesn't. However, the s390 target is actively maintained, the
Zack> i370 isn't, and HOST_EBCDIC doesn't really work. I would like to
Zack> suggest, therefore, that we drop (a) the i370, and (b) any pretense of
Zack> supporting EBCDIC as the primary character encoding for the host. (It
Zack> is much, much easier to support it in the target.)
The i370 port still is used for z/OS (aka OS/390 aka MVS) Unix
System Services. I am not sure which port was used as the basis for the
TPF work which eventually should be merged into the FSF sources.
Zack> rs6000-ibm-aix[123]*
Zack> rs6000-ibm-aix4* # maybe
Huh? It takes incrementally minimal effort to keep older AIX
configurations around and AIX 4.3 still is in wide-spread use.
David