Re: Starting to move Gump to using Java 11

On 10/08/2021 21:38, Mark Thomas wrote:
> On 10/08/2021 21:17, Adam Jack wrote:
>> Thanks for the update. Good luck.
> 
> Thanks. I think I am going to need it. This is going to be *far* from 
> simple.
> 
> There is lots of code currently being built by Gump that needs changes 
> to build with Java 9+.
> 
> You will have seen I started to try and hack around the issues with 
> Commons Lang 2.4 (it was using source=1.4) but forcing source to 1.6 
> (the minimum Java 11 supports) just creates a different problem - the 
> source using "enum" as an identifier but it is a reserved word from Java 
> 5 onwards.
> 
> I don't see a simple or quick solution for this.
> 
> Is there a way in Gump to get just some projects to build with a 
> different JAVA_HOME? Switching just the Tomcat 10.1.x builds to Java 11 
> is the minimum requirement. We can then take a harder look at the 
> dependency chains and see what we can do to update versions / trim 
> things down.

On the topic of dependency chains, log4j 1.2.x is currently blocking 
progress.

I need to set the source and target to 1.6 (local testing on vmgump 
suggests this will then work) but I don't know how to do that.

I see "POM overrides" in a few places But I can't figure out how to use 
them. Is there a way to copy the log4j POM, store it somewhere in Gump 
and then tweak it (essentially change "1.4" to "1.6")?

Mark


> 
> Mark
> 
> 
> 
>>
>> Adam
>>
>> On Tue, Aug 10, 2021, 15:57 Mark Thomas <[email protected]> wrote:
>>
>>> All,
>>>
>>> Since Tomcat's main development branch now requires Java 11, I have
>>> started the process of moving Gump over to Java 11.
>>>
>>> So far, I have added Java 11 to the packages installed by Puppet.
>>>
>>> I want to confirm that Java 11 has been installed, then I'll switch
>>> JAVA_HOME to point to Java 11 rather than Java 8. In theory that should
>>> 'just work'. When it doesn't (optimistic soul that I am), we'll have to
>>> see what fails and figure out the best way to deal with each issue.
>>>
>>> Once everything is running smoothly on Java 11, then I'll remove Java 8.
>>>
>>> Mark
>>>
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>>
> 
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