RFR: 8264449: Enable reproducible builds with SOURCE_DATE_EPOCH

Thu Apr 1 17:48:08 UTC 2021

On Thu, 1 Apr 2021 17:33:35 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> The WebKit build is complicated (to say the least). All of the WebKit components, including the additional third-party dependencies in `/Source/ThirdParty`, are built using cmake. I think any changes would involve passing flags to cmake in `build.gradle`.
>> 
>> @arun-Joseph might be able to comment on that.
>
> 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`.

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