RFR: 8256485: Zero VM build broken after JDK-8254231 [v2]

[Aleksey Shipilev]

On Mon, 23 Nov 2020 12:53:20 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> JDK-8254231 breaks the Zero VM build. This PR contains fixes to get it working again.
>> 
>> Testing: Building zero VM variant on Linux.
>
> Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Rename foreign_globals_zero.hpp include guard

Marked as reviewed by shade (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/1265