[jdk11u-dev] RFR: 8284206: AIX build failure by JDK-8261169 requires a short-term solution

[Stewart X Addison]

On Sat, 2 Apr 2022 15:58:14 GMT, Ichiroh Takiguchi <itakiguchi at openjdk.org> wrote:

> AIX build was failed by [JDK-8261169](https://bugs.openjdk.java.net/browse/JDK-8261169) against jdk11u-dev.
> To fix this issue, C++ compiler should migrate from XL C++ 13.1.3 to XL C++ 16.1.
> Also we need to switch from xlC-based to clang-based compiler.
> 
> I want to request some backports (which are not related Harfbuzz) against AIX platform.
> For short-term solution, I'd like to keep Harfbuzz 2.3.1 just for AIX platform only.
> 
> * Copy Harfbuzz 2.3.1 to src/java.desktop/aix/native/libharfbuzz
> * Modify make/lib/Awt2dLibraries.gmk
> 
> By there changes, we can use xlC-based XL C++ 13.1.3 and 16.1.
> 
> So please backout this change before migrating to clang-based 16.1.

As a representative of Adoptium I'm good with holding back the harfbuzz upgrade on AIX for now. The concern I have is that moving up to xlc16 will introduce a change within the JDK11 stream that requires a different xlc runtime package to be installed on the end users' machines, therefore it could break people which would be a relatively unusual/undesirable thing to do within the JDK11 stream. FYI We already use xlc16 for JDK17+

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/991