From: Srirama Kucherlapati <sriram.rk@in.ibm.com>
To: Peter Eisentraut <peter@eisentraut.org>,
        Alvaro Herrera
	<alvherre@alvh.no-ip.org>,
        "pgsql-hackers@postgresql.org"
	<pgsql-hackers@postgresql.org>,
        Noah Misch <noah@leadboat.com>, Heikki
 Linnakangas <hlinnaka@iki.fi>
CC: Bruce Momjian <bruce@momjian.us>, Michael Paquier <michael@paquier.xyz>,
        Andres Freund <andres@anarazel.de>, Tom Lane <tgl@sss.pgh.pa.us>,
        Thomas
 Munro <thomas.munro@gmail.com>,
        "tvk1271@gmail.com" <tvk1271@gmail.com>,
        postgres-ibm-aix <postgres-ibm-aix-dg@ibm.com>,
        Sriram RK
	<sriram.rk@outlook.com>
Thread-Topic: [EXTERNAL] Re: AIX support
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Date: Thu, 23 May 2024 15:36:24 +0000
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Subject: RE: AIX support
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Hi Peter, thanks for your feedback.

We are eager to extend our support in resolving the issues specific to AIX =
or corresponding
compilers (XLC and cLang).

But as there are no issues with the patch after reverting the changes(with =
the latest compilers
gcc12 and xlc-16.0.1.18), we were wondering if this patch can be merged wit=
h the current release 17??

Having said that, we are committed to resolve all the hacks and caveats tha=
t got
accumulated specific to AIX over the period by picking and resolving one af=
ter the other,
rather than waiting for all the hacks to be fixed.

 > One of the reasons that the AIX port ultimately became unmaintainable
  > was that so many hacks and caveats were accumulated over the years.  A
  > new port should set a more recent baseline and trim all those hacks.
Please help me understand this, with respect to the AIX specific hacks, is =
it just we can find
all the location where _AIX macros are involved OR can we just look at the =
patch changes only, as all
the changes that were made were specific to AIX. If not, is there any other=
 location where
we could find all the hacks to be resolved.
Can you provide some more details on the expectations here?


Warm regards,
Sriram.


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Hi Peter, thanks for your feedback.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">We are eager to extend our support in resolving the issues specific=
 to AIX or corresponding
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">compilers (XLC and cLang).
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">But as there are no issues with the patch after reverting the chang=
es(with the latest compilers
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">gcc12 and xlc-16.0.1.18), we were wondering if this patch can be me=
rged with the current release 17??<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Having said that, we are committed to resolve all the hacks and cav=
eats that got
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">accumulated specific to AIX over the period by picking and resolvin=
g one after the other,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">rather than waiting for all the hacks to be fixed.<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-s=
ize:11.0pt">&nbsp;&gt; One of the reasons that the AIX port ultimately beca=
me unmaintainable &nbsp;<br>
&nbsp;&nbsp;&gt; was that so many hacks and caveats were accumulated over t=
he years.&nbsp; A <br>
&nbsp;&nbsp;&gt; new port should set a more recent baseline and trim all th=
ose hacks.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Please help me understand this, with respect to the AIX specific ha=
cks, is it just we can find
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">all the location where _AIX macros are involved OR can we just look=
 at the patch changes only, as all
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">the changes that were made were specific to AIX. If not, is there a=
ny other location where
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">we could find all the hacks to be resolved.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Can you provide some more details on the expectations here?<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
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<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Warm regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;mso-fareast-language=
:EN-US">Sriram.<o:p></o:p></span></p>
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