RFR(XS): 8211837: Creation of the default CDS Archive should depend on ENABLE_CDS

[Volker Simonis]

Hi Martin, Goetz,

thanks for reviewing my patch! As Aleksey posted a similar patch for
fixing the Zero build I've extended my patch to handle
zero/minimal/core as well.

In fact the patch now disables CDS on AIX, minimal, core and zero
unless the user explicitly requests it with the help of
`--with-jvm-features=cds`. The configuration variant with
`--with-jvm-features=-cds` should now also be handled correctly (I
hope caught all possible combinations :)

If CDS is disabled, the creation of the default class list and default
archive will now be disabled as well.

@Aleksey Shipilev : can you please check if this new version of my
patch also works for you?

http://cr.openjdk.java.net/~simonis/webrevs/2018/8211837.v1/

Thank you and best regards,
Volker
On Mon, Oct 8, 2018 at 11:10 AM Doerr, Martin <martin.doerr at sap.com> wrote:
>
> Hi Volker,
>
> looks good. Thanks for fixing.
> Of course, it would be great if this could be used to fix minimal/zero build, too.
>
> Best regards,
> Martin
>
>
> -----Original Message-----
> From: hotspot-runtime-dev <hotspot-runtime-dev-bounces at openjdk.java.net> On Behalf Of Volker Simonis
> Sent: Montag, 8. Oktober 2018 10:19
> To: build-dev <build-dev at openjdk.java.net>; hotspot-runtime-dev at openjdk.java.net runtime <hotspot-runtime-dev at openjdk.java.net>
> Subject: RFR(XS): 8211837: Creation of the default CDS Archive should depend on ENABLE_CDS
>
> Hi,
>
> can I please have a review for the following trivial build fix:
>
> http://cr.openjdk.java.net/~simonis/webrevs/2018/8211837/
> https://bugs.openjdk.java.net/browse/JDK-8211837
>
> It makes no sense to try to create a default CDS archive on VMs which
> don't support CDS at all. We already have '--enable_cds' which
> defaults to 'true' on all platforms except AIX.
>
> The check for '--enable_cds_archive' should use the result of
> '--enable_cds' (which is saved in "ENABLE_CDS") and only enable
> default archive creation if CDS is enabled.
>
> Failure to do so currently breaks the AIX build (after JDK-)8202951 was pushed).
>
> Thank you and best regards,
> Volker