During a build of OpenJDK head stream (aka 22), I've noticed that it fails 100% of the time on AIX.

Here is the error:

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00:48:42 Compiling up to 359 files for jdk.compiler
00:49:17 Compiling up to 40 files for jdk.jcmd
00:49:22 ar: No such file or directory
00:49:22 ar: 0707-117 The fopen system call failed on file -f/home/jenkins/workspace/build-scripts/jobs/jdk/jdk-aix-ppc64-temurin/workspace/build/src/build/aix-ppc64-server-release/support/native/jdk.jdwp.agent/libjdwp/static/_BUILD_LIBJDWP_objectfilenames.txt.
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After searching the bug db for issues, I found JDK-8307858, which appears to be the same issue but on OSX.

So I identified the platform-specific fix, and adapted it to apply to aix as well. This appears to solve the problem, and the build now completes.

Will create the PR and request approval.