RFR: 8326685: Linux builds not reproducible if two builds configured in different build folders

[Andrew Leonard]

On Mon, 26 Feb 2024 16:00:42 GMT, Andrew Leonard <aleonard at openjdk.org> wrote:

> Adds Linux -fdebug-prefix-map'ing for SUPPORT_OUTPUTDIR and HOTSPOT_OUTPUTDIR when absolute paths are not allowed in the binaries, thus making the building of a JDK identically reproducible from different build directories.

Tested locally on an aarch64 VM, with two build directories, build1 and build2. The resulting jdk image was identical.

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PR Comment: https://git.openjdk.org/jdk/pull/18009#issuecomment-1964558021