RFR: Fix Minimal VM build

[Andrew Haley]

On 06/06/2018 10:43 AM, Aleksey Shipilev wrote:
> On 06/06/2018 11:40 AM, Andrew Haley wrote:
>> On 05/07/2018 02:17 PM, Roman Kennke wrote:
>>> Am 07.05.2018 um 13:46 schrieb Aleksey Shipilev:
>>>> http://cr.openjdk.java.net/~shade/shenandoah/minimal-vm/webrev.01/
>>>>
>>>> This enables Shenandoah workspace to build cleanly with jvm-variant=minimal.
>>>>
>>>> Testing: hotspot_gc_shenandoah {fastdebug|release} x86_64, {server,minimal} x86 build
>>>>
>>>> Thanks,
>>>> -Aleksey
>>>>
>>>
>>> Ugh. All those #ifdefs ... but well ok, most of this stuff will
>>> (hopefully) disappear again once we merge upstream c1 barrierset stuff.
>>
>> Why not just make it an unsupported configuration?
> 
> Well, this is not Shenandoah issue, but build cleanness issue: once Shenandoah code lands in the
> repo, all other build configurations should still be buildable, including minimal VM, zero, etc.

Got it.  So Shenandoah doesn't have to work with minimal VM, it just
has to not break it.  OK.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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