RFR: 8284661: Reproducible assembly builds without relative linking

[Erik Joelsson]

On Mon, 11 Apr 2022 09:43:37 GMT, Andrew Leonard <aleonard at openjdk.org> wrote:

> This PR removes the need for relative object file linking introduced by JDK-8284437 for linux libraries, by specifying
> .file <relative source path> directives in the linux .S source files. The source files specify a .file ASSEMBLY_SRC_FILE
> where ASSEMBLY_SRC_FILE is defined by the NativeCompliation.gmk.
> 
> Signed-off-by: Andrew Leonard <anleonar at redhat.com>

Maybe some short explanation should be added as comment in the src files?

If this makes the debuginfo files free from absolute paths on Linux, could you also adjust `open/test/jdk/build/AbsPathsInImage.java` to include those files on Linux? Would be good to be able to catch any regression to this behavior in the future.

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PR: https://git.openjdk.java.net/jdk/pull/8177