RFR: JDK-8282700: Properly handle several --without options during configure [v4]

[Magnus Ihse Bursie]

On Thu, 10 Mar 2022 10:31:17 GMT, Julian Waters <jwaters at openjdk.org> wrote:

>> make/autoconf/jdk-version.m4 line 507:
>> 
>>> 505:     # Set vendor version string if --without is not passed
>>> 506:     # Check not required if an empty value is passed, since VENDOR_VERSION_STRING
>>> 507:     # would then be set to ""
>> 
>> I'm not sure that works. In general, values like these are *supposed* to have a value. The default fallback is "N/A", which is not the empty string. I see no point in allowing overriding this to be empty. It just introduces cases where the build might fail later, for something that will hardly ever be tested.
>
> I treated this differently since it didn't seem to have any default value at all, as opposed to the other vendor options. I may have made a mistake while looking for where the vendor version string is defined in this case

It's in make/conf/branding.conf.

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PR: https://git.openjdk.java.net/jdk/pull/7713