RFR: 8264449: Enable reproducible builds with SOURCE_DATE_EPOCH

Thu Apr 1 17:53:12 UTC 2021

On Thu, 1 Apr 2021 17:44:58 GMT, Arun Joseph <ajoseph at openjdk.org> wrote:

>> I should add that if changes are needed to the `Makefile.msvc` files to accept extra link flags to be passed in, then it would be fine to modify them.
>
> It would be better to add the flag in `libxml/CMakeLists.txt` or in `build.gradle` via `cmakeArgs`.

Ideally the latter, if feasible, so that the logic to handle `SOURCE_DATE_EPOCH` is more localized.

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PR: https://git.openjdk.java.net/jfx/pull/446