maven3 @3.6.0: change dependency from Kaffe to OpenJDK

[FranklinYu (Franklin Yu)]

Currently Maven 3 depends on bin:java:kaffe. Kaffe is no longer maintained, so it makes sense to switch to bin:java:openjdk11.

[FranklinYu (Franklin Yu)]

Actually, this issue affects not only maven3. I tried with following command to count the total number:

grep -r bin:java:kaffe . | wc

I got 112 ports. Do we change all of them?

[mouse07410 (Mouse)]

May I ask what is the issue here? What doesn't seem to work with the current setup/config?

I suggest we leave this alone, at least for now. Some of us are using Oracle JDK, and the current Maven3 port works just fine with it. I for one don't want to crowd my Macports installation with large useless ports that could interfere with other software installed on the machine.

Those who prefer openjdk8 or openjdk11 can easily install 'em themselves.

[mf2k (Frank Schima)]

I believe that switching to the java 1.0 portgroup is the way to go here. If the user has Oracle Java installed, then that will satisfy the dependency. As a fallback, it will require an openjdk port of the minimum specified version.

[FranklinYu (Franklin Yu)]

Replying to mf2k:

I believe that switching to the java 1.0 portgroup is the way to go here. If the user has Oracle Java installed, then that will satisfy the dependency. As a fallback, it will require an openjdk port of the minimum specified version.

Do you mean PortGroup java 1.0 as mentioned ​here? If we omit java.fallback then what’s the default value?

[mf2k (Frank Schima)]

Yes exactly! I guess the (greatly appreciated) documentation needs to be updated. I don't know and I'm none the wiser after looking at the portgroup code.

[chrstphrchvz (Christopher Chavez)]

This ticket can be closed; I neglected to do so via the commit message of [69d55c8883/macports-ports].

Replying to FranklinYu:

If we omit java.fallback then what’s the default value?

Nothing; if an appropriate Java isn't found and no fallback is specified, the port will fail to install.