From Tyler.Steele at ibm.com  Thu Mar 10 16:26:57 2022
From: Tyler.Steele at ibm.com (Tyler Steele)
Date: Thu, 10 Mar 2022 16:26:57 +0000
Subject: AIX Adoptium Builds on jdk-dev repos
Message-ID: <d175c8af5eeb0fae35c4ab21bef6b0ea9bc9c0a7.camel@ibm.com>

Hello AIX/ppc porters,

Recent changes to the build environment on jdk11 related to Harfbuzz (thanks to Matthias and Martin for keeping me in
the loop) prompted me to ask Adoptium to build jdk-dev branches on AIX. As a result, they are now building jdk11u-dev
(and potentially jdk8u-dev and jdk17u-dev in the future). If you would like to check the build status of jdk11u-dev you
can now do so here (https://ci.adoptopenjdk.net/job/AIX-jdk11-dev-build/).

I have the impression that this will be more likely to stick around if it is used and appreciated by the community. So
feel free to comment on the PR if you think it is useful, or if you have any suggestions to improve it's fit for your
use-case (https://github.com/adoptium/temurin-build/issues/2868 ). 

Tyler

From takiguc at linux.vnet.ibm.com  Fri Mar 18 02:12:44 2022
From: takiguc at linux.vnet.ibm.com (Ichiroh Takiguchi)
Date: Fri, 18 Mar 2022 11:12:44 +0900
Subject: Fwd: RFR: 8204541: Correctly support AIX xlC 16.1 symbol visibility
 flags
In-Reply-To: <65dtN3xpTEtzOj7UywBuBD_y6Y5g1DHcjGugjges45U=.728a2ec1-da30-4b25-b4f6-370d807d965a@github.com>
References: <65dtN3xpTEtzOj7UywBuBD_y6Y5g1DHcjGugjges45U=.728a2ec1-da30-4b25-b4f6-370d807d965a@github.com>
Message-ID: <3275ac2c955c3513736c51e78f77fc90@imap.linux.ibm.com>

Hello.

I created AIX related PR# 7862 [1]
I appreciate if you give me any suggestion.

[1] https://github.com/openjdk/jdk/pull/7862

Ichiroh Takiguchi
IBM Japan, Ltd.

-------- Original Message --------
Subject: RFR: 8204541: Correctly support AIX xlC 16.1 symbol visibility 
flags
Date: 2022-03-18 10:56
 From: Ichiroh Takiguchi <itakiguchi at openjdk.java.net>
To: <build-dev at openjdk.java.net>

This change is just for AIX platform with IBM XL C/C++ 16.1.
By this change, lib's entry points are reduced by compilation and 
linkage option changes.

Without changes:

$ dump -X32_64 -Tv lib/libawt.so | grep EXP | wc
914

With changes

$ dump -X32_64 -Tv lib/libawt.so | grep EXP | wc
142

-------------

Commit messages:
  - 8204541: Correctly support AIX xlC 16.1 symbol visibility flags

Changes: https://git.openjdk.java.net/jdk/pull/7862/files
  Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7862&range=00
   Issue: https://bugs.openjdk.java.net/browse/JDK-8204541
   Stats: 13 lines in 3 files changed: 7 ins; 2 del; 4 mod
   Patch: https://git.openjdk.java.net/jdk/pull/7862.diff
   Fetch: git fetch https://git.openjdk.java.net/jdk 
pull/7862/head:pull/7862

PR: https://git.openjdk.java.net/jdk/pull/7862

From Tyler.Steele at ibm.com  Thu Mar 24 15:05:08 2022
From: Tyler.Steele at ibm.com (Tyler Steele)
Date: Thu, 24 Mar 2022 15:05:08 +0000
Subject: Failing jdk11u AIX build on Adoptium servers
Message-ID: <9f25833e7be003b8d8acc75e3c1a4ea570b58e80.camel@ibm.com>

Hi all,

In regards to the new Harfbuzz version bump (and the work done to prepare for it). And of special importance now that
the Adoptium build of jdk11u-dev is
failing?[https://ci.adoptopenjdk.net/job/AIX-jdk11-dev-build/17/execution/node/51/log/], I wanted to suggest a course of
action to the AIX-folks here to get suggestions before I make any changes.

Early this week, I spent some time looking into this issue. My assessment is that AIX builds for jdk versions 11 and
greater will need the at least xlc version 16.1 to support the Harfbuzz change. This is because full support for C++11
with xlc did not arrive on AIX until that version (little-endian support was complete in 13.1).

For reference:
"IBM XL C++ for AIX
 - Core language support status: C++11 partial in 13.1.3 and 16.1.0 (xlC frontend), complete in 16.1.0 (xlclang
frontend)" [source: https://en.cppreference.com/w/cpp/compiler_support ]

My expected course of action is as follows:
- Bump the minimum requirements in our Supported Builds document
[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms]
- Open an issue with the Adoptium group to change their build for jdk11 and above to use the version 16 compiler.

As I am still relatively new to AIX and OpenJDK development, so I value any suggestions for improvements, omissions you
may have noticed, or generally other comments the team here may have.

Tyler 

From thomas.stuefe at gmail.com  Thu Mar 24 15:45:37 2022
From: thomas.stuefe at gmail.com (=?UTF-8?Q?Thomas_St=C3=BCfe?=)
Date: Thu, 24 Mar 2022 16:45:37 +0100
Subject: Failing jdk11u AIX build on Adoptium servers
In-Reply-To: <9f25833e7be003b8d8acc75e3c1a4ea570b58e80.camel@ibm.com>
References: <9f25833e7be003b8d8acc75e3c1a4ea570b58e80.camel@ibm.com>
Message-ID: <CAA-vtUwRTxn-e6Da8aKvt5Ncj8_=9FGGVQx8hX1hB6pxTvMr8g@mail.gmail.com>

cc build-dev.

Hi Tyler, makes sense to me. Wrt the documentation, probably we should
change the minimum requirement of jdk12 too then.

Cheers, Thomas





On Thu, Mar 24, 2022 at 4:05 PM Tyler Steele <Tyler.Steele at ibm.com> wrote:

> Hi all,
>
> In regards to the new Harfbuzz version bump (and the work done to prepare
> for it). And of special importance now that
> the Adoptium build of jdk11u-dev is
> failing [
> https://ci.adoptopenjdk.net/job/AIX-jdk11-dev-build/17/execution/node/51/log/],
> I wanted to suggest a course of
> action to the AIX-folks here to get suggestions before I make any changes.
>
> Early this week, I spent some time looking into this issue. My assessment
> is that AIX builds for jdk versions 11 and
> greater will need the at least xlc version 16.1 to support the Harfbuzz
> change. This is because full support for C++11
> with xlc did not arrive on AIX until that version (little-endian support
> was complete in 13.1).
>
> For reference:
> "IBM XL C++ for AIX
>  - Core language support status: C++11 partial in 13.1.3 and 16.1.0 (xlC
> frontend), complete in 16.1.0 (xlclang
> frontend)" [source: https://en.cppreference.com/w/cpp/compiler_support ]
>
> My expected course of action is as follows:
> - Bump the minimum requirements in our Supported Builds document
> [https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms]
> - Open an issue with the Adoptium group to change their build for jdk11
> and above to use the version 16 compiler.
>
> As I am still relatively new to AIX and OpenJDK development, so I value
> any suggestions for improvements, omissions you
> may have noticed, or generally other comments the team here may have.
>
> Tyler
>
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From matthias.baesken at sap.com  Thu Mar 24 15:55:20 2022
From: matthias.baesken at sap.com (Baesken, Matthias)
Date: Thu, 24 Mar 2022 15:55:20 +0000
Subject: Failing jdk11u AIX build on Adoptium servers
In-Reply-To: <CAA-vtUwRTxn-e6Da8aKvt5Ncj8_=9FGGVQx8hX1hB6pxTvMr8g@mail.gmail.com>
References: <9f25833e7be003b8d8acc75e3c1a4ea570b58e80.camel@ibm.com>
 <CAA-vtUwRTxn-e6Da8aKvt5Ncj8_=9FGGVQx8hX1hB6pxTvMr8g@mail.gmail.com>
Message-ID: <AM9PR02MB6770636312926D63EE4B7EFE93199@AM9PR02MB6770.eurprd02.prod.outlook.com>

Hi ,

>My expected course of action is as follows:
>- Bump the minimum requirements in our Supported Builds document
>[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms]
>- Open an issue with the Adoptium group to change their build for jdk11 and above to use the version 16 compiler.

Are the xlc16 ? related changes already all in jdk11u-dev now ?

>probably we should change the minimum requirement of jdk12 too then.

JDK12 does not have the harfbuzz 2.8.0  backport so probably no need to change the Supported Builds document.

Best regards, Matthias

From: ppc-aix-port-dev <ppc-aix-port-dev-retn at openjdk.java.net> On Behalf Of Thomas St?fe
Sent: Thursday, 24 March 2022 16:46
To: Tyler Steele <Tyler.Steele at ibm.com>
Cc: ppc-aix-port-dev at openjdk.java.net; build-dev <build-dev at openjdk.java.net>
Subject: Re: Failing jdk11u AIX build on Adoptium servers

cc build-dev.

Hi Tyler, makes sense to me. Wrt the documentation, probably we should change the minimum requirement of jdk12 too then.

Cheers, Thomas





On Thu, Mar 24, 2022 at 4:05 PM Tyler Steele <Tyler.Steele at ibm.com<mailto:Tyler.Steele at ibm.com>> wrote:
Hi all,

In regards to the new Harfbuzz version bump (and the work done to prepare for it). And of special importance now that
the Adoptium build of jdk11u-dev is
failing [https://ci.adoptopenjdk.net/job/AIX-jdk11-dev-build/17/execution/node/51/log/<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fci.adoptopenjdk.net%2Fjob%2FAIX-jdk11-dev-build%2F17%2Fexecution%2Fnode%2F51%2Flog%2F&data=04%7C01%7Cmatthias.baesken%40sap.com%7Cd873f2a0a8ad495922f008da0dad9ad2%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C637837336525959138%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=TBfQGnG8attH3Vh5y43KXlaX0Hg5yZyd21jSYCXV5Gk%3D&reserved=0>], I wanted to suggest a course of
action to the AIX-folks here to get suggestions before I make any changes.

Early this week, I spent some time looking into this issue. My assessment is that AIX builds for jdk versions 11 and
greater will need the at least xlc version 16.1 to support the Harfbuzz change. This is because full support for C++11
with xlc did not arrive on AIX until that version (little-endian support was complete in 13.1).

For reference:
"IBM XL C++ for AIX
 - Core language support status: C++11 partial in 13.1.3 and 16.1.0 (xlC frontend), complete in 16.1.0 (xlclang
frontend)" [source: https://en.cppreference.com/w/cpp/compiler_support<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fen.cppreference.com%2Fw%2Fcpp%2Fcompiler_support&data=04%7C01%7Cmatthias.baesken%40sap.com%7Cd873f2a0a8ad495922f008da0dad9ad2%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C637837336525959138%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=7L7FQ2Lusx%2FF53ct0uApxFbo7KdEdPcs5%2Fs9LKqpqg4%3D&reserved=0> ]

My expected course of action is as follows:
- Bump the minimum requirements in our Supported Builds document
[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms]
- Open an issue with the Adoptium group to change their build for jdk11 and above to use the version 16 compiler.

As I am still relatively new to AIX and OpenJDK development, so I value any suggestions for improvements, omissions you
may have noticed, or generally other comments the team here may have.

Tyler
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From thomas.stuefe at gmail.com  Thu Mar 24 16:04:34 2022
From: thomas.stuefe at gmail.com (=?UTF-8?Q?Thomas_St=C3=BCfe?=)
Date: Thu, 24 Mar 2022 17:04:34 +0100
Subject: Failing jdk11u AIX build on Adoptium servers
In-Reply-To: <AM9PR02MB6770636312926D63EE4B7EFE93199@AM9PR02MB6770.eurprd02.prod.outlook.com>
References: <9f25833e7be003b8d8acc75e3c1a4ea570b58e80.camel@ibm.com>
 <CAA-vtUwRTxn-e6Da8aKvt5Ncj8_=9FGGVQx8hX1hB6pxTvMr8g@mail.gmail.com>
 <AM9PR02MB6770636312926D63EE4B7EFE93199@AM9PR02MB6770.eurprd02.prod.outlook.com>
Message-ID: <CAA-vtUwTbybfwtAXtX0sQgQLxQbph1bAoGRhY2qJJPxfzpdxAg@mail.gmail.com>

Hi Matthias,

On Thu, Mar 24, 2022 at 4:55 PM Baesken, Matthias <matthias.baesken at sap.com>
wrote:

> Hi ,
>
>
>
> >My expected course of action is as follows:
> >- Bump the minimum requirements in our Supported Builds document
> >[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms]
> >- Open an issue with the Adoptium group to change their build for jdk11
> and above to use the version 16 compiler.
>
> Are the xlc16 ? related changes already all in jdk11u-dev now ?
>
>
>
> >probably we should change the minimum requirement of jdk12 too then.
>
>
>
> JDK12 does not have the harfbuzz 2.8.0  backport so probably no need to
> change the Supported Builds document.
>
>
oh, you are right. I just thought that it would be strange if jdk11 had a
newer compiler requirement than jdk12. But probably nobody cares for jdk12
on AIX.

Thanks, Thomas


>
>
> Best regards, Matthias
>
>
>
>
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From martin.doerr at sap.com  Thu Mar 24 16:41:55 2022
From: martin.doerr at sap.com (Doerr, Martin)
Date: Thu, 24 Mar 2022 16:41:55 +0000
Subject: AW: Failing jdk11u AIX build on Adoptium servers
In-Reply-To: <AM9PR02MB6770636312926D63EE4B7EFE93199@AM9PR02MB6770.eurprd02.prod.outlook.com>
References: <9f25833e7be003b8d8acc75e3c1a4ea570b58e80.camel@ibm.com>
 <CAA-vtUwRTxn-e6Da8aKvt5Ncj8_=9FGGVQx8hX1hB6pxTvMr8g@mail.gmail.com>
 <AM9PR02MB6770636312926D63EE4B7EFE93199@AM9PR02MB6770.eurprd02.prod.outlook.com>
Message-ID: <HE1PR02MB3066003E763AA8920A0C9A879A199@HE1PR02MB3066.eurprd02.prod.outlook.com>

Hi,

a couple of backports are still missing. Please see my comment
https://bugs.openjdk.java.net/browse/JDK-8282588?focusedCommentId=14480395&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-14480395

Best regards,
Martin

Von: ppc-aix-port-dev <ppc-aix-port-dev-retn at openjdk.java.net> im Auftrag von Baesken, Matthias <matthias.baesken at sap.com>
Datum: Donnerstag, 24. M?rz 2022 um 16:56
An: Thomas St?fe <thomas.stuefe at gmail.com>, Tyler Steele <Tyler.Steele at ibm.com>
Cc: ppc-aix-port-dev at openjdk.java.net <ppc-aix-port-dev at openjdk.java.net>, build-dev <build-dev at openjdk.java.net>
Betreff: RE: Failing jdk11u AIX build on Adoptium servers
Hi ,

>My expected course of action is as follows:
>- Bump the minimum requirements in our Supported Builds document
>[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms]
>- Open an issue with the Adoptium group to change their build for jdk11 and above to use the version 16 compiler.


Are the xlc16 ? related changes already all in jdk11u-dev now ?

>probably we should change the minimum requirement of jdk12 too then.

JDK12 does not have the harfbuzz 2.8.0  backport so probably no need to change the Supported Builds document.

Best regards, Matthias

From: ppc-aix-port-dev <ppc-aix-port-dev-retn at openjdk.java.net> On Behalf Of Thomas St?fe
Sent: Thursday, 24 March 2022 16:46
To: Tyler Steele <Tyler.Steele at ibm.com>
Cc: ppc-aix-port-dev at openjdk.java.net; build-dev <build-dev at openjdk.java.net>
Subject: Re: Failing jdk11u AIX build on Adoptium servers

cc build-dev.

Hi Tyler, makes sense to me. Wrt the documentation, probably we should change the minimum requirement of jdk12 too then.

Cheers, Thomas





On Thu, Mar 24, 2022 at 4:05 PM Tyler Steele <Tyler.Steele at ibm.com<mailto:Tyler.Steele at ibm.com>> wrote:
Hi all,

In regards to the new Harfbuzz version bump (and the work done to prepare for it). And of special importance now that
the Adoptium build of jdk11u-dev is
failing [https://ci.adoptopenjdk.net/job/AIX-jdk11-dev-build/17/execution/node/51/log/<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fci.adoptopenjdk.net%2Fjob%2FAIX-jdk11-dev-build%2F17%2Fexecution%2Fnode%2F51%2Flog%2F&data=04%7C01%7CMartin.Doerr%40sap.com%7Cd3f0270572af468ce8d708da0daedea0%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C637837341969962435%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=C3datzVYS2CVfBra6PZRvYQUBMBMhBA8UqDngzJQkzU%3D&reserved=0>], I wanted to suggest a course of
action to the AIX-folks here to get suggestions before I make any changes.

Early this week, I spent some time looking into this issue. My assessment is that AIX builds for jdk versions 11 and
greater will need the at least xlc version 16.1 to support the Harfbuzz change. This is because full support for C++11
with xlc did not arrive on AIX until that version (little-endian support was complete in 13.1).

For reference:
"IBM XL C++ for AIX
 - Core language support status: C++11 partial in 13.1.3 and 16.1.0 (xlC frontend), complete in 16.1.0 (xlclang
frontend)" [source: https://en.cppreference.com/w/cpp/compiler_support<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fen.cppreference.com%2Fw%2Fcpp%2Fcompiler_support&data=04%7C01%7CMartin.Doerr%40sap.com%7Cd3f0270572af468ce8d708da0daedea0%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C637837341969962435%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=pOIj2bZGkXyNs%2FnZaZeToyNTD8zT7qzXu%2FlTBiZ%2FGrg%3D&reserved=0> ]

My expected course of action is as follows:
- Bump the minimum requirements in our Supported Builds document
[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms]
- Open an issue with the Adoptium group to change their build for jdk11 and above to use the version 16 compiler.

As I am still relatively new to AIX and OpenJDK development, so I value any suggestions for improvements, omissions you
may have noticed, or generally other comments the team here may have.

Tyler
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From Tyler.Steele at ibm.com  Fri Mar 25 16:10:55 2022
From: Tyler.Steele at ibm.com (Tyler Steele)
Date: Fri, 25 Mar 2022 16:10:55 +0000
Subject: AW: Failing jdk11u AIX build on Adoptium servers
In-Reply-To: <HE1PR02MB3066003E763AA8920A0C9A879A199@HE1PR02MB3066.eurprd02.prod.outlook.com>
References: <9f25833e7be003b8d8acc75e3c1a4ea570b58e80.camel@ibm.com>
 <CAA-vtUwRTxn-e6Da8aKvt5Ncj8_=9FGGVQx8hX1hB6pxTvMr8g@mail.gmail.com>
 <AM9PR02MB6770636312926D63EE4B7EFE93199@AM9PR02MB6770.eurprd02.prod.outlook.com>
 <HE1PR02MB3066003E763AA8920A0C9A879A199@HE1PR02MB3066.eurprd02.prod.outlook.com>
Message-ID: <8fa9e5e72d81f7a0cbc0773400d3e7f6d62db632.camel@ibm.com>

Thanks all for your comments and feedback.

Good point Martin. Those required backports will be my focus for the next little while.

Matthias, it seems you are the one with access to the Supported Build Platforms wiki (https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms) please update the xlc version number for jdk11 to 16.1 when you have a chance. I will follow up with changes to the notes section as well. Much appreciated :-)

Tyler

On Thu, 2022-03-24 at 16:41 +0000, Doerr, Martin wrote:
Hi,

a couple of backports are still missing. Please see my comment
https://bugs.openjdk.java.net/browse/JDK-8282588?focusedCommentId=14480395&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-14480395<https://bugs.openjdk.java.net/browse/JDK-8282588?focusedCommentId=14480395&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-14480395>

Best regards,
Martin

Von:ppc-aix-port-dev <ppc-aix-port-dev-retn at openjdk.java.net> im Auftrag von Baesken, Matthias <matthias.baesken at sap.com>
Datum: Donnerstag, 24. M?rz 2022 um 16:56
An: Thomas St?fe <thomas.stuefe at gmail.com>, Tyler Steele <Tyler.Steele at ibm.com>
Cc: ppc-aix-port-dev at openjdk.java.net <ppc-aix-port-dev at openjdk.java.net>, build-dev <build-dev at openjdk.java.net>
Betreff: RE: Failing jdk11u AIX build on Adoptium servers
Hi ,

>My expected course of action is as follows:
>- Bump the minimum requirements in our Supported Builds document
>[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms<https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms>]
>- Open an issue with the Adoptium group to change their build for jdk11 and above to use the version 16 compiler.


Are the xlc16 ? related changes already all in jdk11u-dev now ?

>probably we should change the minimum requirement of jdk12 too then.

JDK12 does not have the harfbuzz 2.8.0  backport so probably no need to change theSupported Builds document.

Best regards, Matthias

From: ppc-aix-port-dev <ppc-aix-port-dev-retn at openjdk.java.net>On Behalf Of Thomas St?fe
Sent: Thursday, 24 March 2022 16:46
To: Tyler Steele <Tyler.Steele at ibm.com>
Cc: ppc-aix-port-dev at openjdk.java.net; build-dev <build-dev at openjdk.java.net>
Subject: Re: Failing jdk11u AIX build on Adoptium servers

cc build-dev.

Hi Tyler, makes sense to me. Wrt the documentation, probably we should change the minimum requirement of jdk12 too then.

Cheers, Thomas





On Thu, Mar 24, 2022 at 4:05 PM Tyler Steele <Tyler.Steele at ibm.com<mailto:Tyler.Steele at ibm.com>> wrote:
Hi all,

In regards to the new Harfbuzz version bump (and the work done to prepare for it). And of special importance now that
the Adoptium build of jdk11u-dev is
failing [https://ci.adoptopenjdk.net/job/AIX-jdk11-dev-build/17/execution/node/51/log/<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fci.adoptopenjdk.net%2Fjob%2FAIX-jdk11-dev-build%2F17%2Fexecution%2Fnode%2F51%2Flog%2F&data=04%7C01%7CMartin.Doerr%40sap.com%7Cd3f0270572af468ce8d708da0daedea0%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C637837341969962435%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=C3datzVYS2CVfBra6PZRvYQUBMBMhBA8UqDngzJQkzU%3D&reserved=0>], I wanted to suggest a course of
action to the AIX-folks here to get suggestions before I make any changes.

Early this week, I spent some time looking into this issue. My assessment is that AIX builds for jdk versions 11 and
greater will need the at least xlc version 16.1 to support the Harfbuzz change. This is because full support for C++11
with xlc did not arrive on AIX until that version (little-endian support was complete in 13.1).

For reference:
"IBM XL C++ for AIX
 - Core language support status: C++11 partial in 13.1.3 and 16.1.0 (xlC frontend), complete in 16.1.0 (xlclang
frontend)" [source: https://en.cppreference.com/w/cpp/compiler_support<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fen.cppreference.com%2Fw%2Fcpp%2Fcompiler_support&data=04%7C01%7CMartin.Doerr%40sap.com%7Cd3f0270572af468ce8d708da0daedea0%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C637837341969962435%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=pOIj2bZGkXyNs%2FnZaZeToyNTD8zT7qzXu%2FlTBiZ%2FGrg%3D&reserved=0> ]

My expected course of action is as follows:
- Bump the minimum requirements in our Supported Builds document
[https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms<https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms>]
- Open an issue with the Adoptium group to change their build for jdk11 and above to use the version 16 compiler.

As I am still relatively new to AIX and OpenJDK development, so I value any suggestions for improvements, omissions you
may have noticed, or generally other comments the team here may have.

Tyler

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