Can't build using OpenJDK 17

[gavv]

Currently, I'm able to build roc-java using OpenJDK 8, but not OpenJDK 17.

OpenJDK 8 is not available in next debian stable candidate, so it would be nice to fix build with recent version. Otherwise you need to install older JDK manually.

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When using OpenJDK 17, I get the following error:

Starting a Gradle Daemon, 1 incompatible Daemon could not be reused, use --status for details

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':roc_jni'.
> Could not open proj remapped class cache for 6ln1p28aqpsv1qjk04pyeijya (/home/victor/.gradle/caches/6.4/scripts-remapped/build_bvwlj1vorvl1q0nbtcfbai48m/6ln1p28aqpsv1qjk04pyeijya/proj68a30bfc7da5ef859cd7b983445462e5).
   > Could not open proj generic class cache for build file '/home/victor/dev/roc-streaming/roc-java/roc_jni/build.gradle' (/home/victor/.gradle/caches/6.4/scripts/6ln1p28aqpsv1qjk04pyeijya/proj/proj68a30bfc7da5ef859cd7b983445462e5).
      > BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 61

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 2s

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If I download JDK 8 from here and added it to PATH:

PATH="/some/path/jdk8u362-b09/bin:$PATH" ./gradlew build

everything works.

[ortex]

we have gradle 6.4 https://github.com/roc-streaming/roc-java/blob/main/gradle/wrapper/gradle-wrapper.properties#L3 and it doesn't support java 17

https://stackoverflow.com/questions/68597899/bug-exception-in-phase-semantic-analysis-in-source-unit-buildscript-unsup

Compatibility table: https://docs.gradle.org/current/userguide/compatibility.html

[gavv]

If we update gradle, will it still work on java 8? If yes, I'd suggest to update.

[ortex]

If we update gradle, will it still work on java 8?

I think so. Now it works with java 11.

The main problem is that maven plugin was removed from 7+ version. https://docs.gradle.org/current/userguide/upgrading_version_6.html#removal_of_the_legacy_maven_plugin

We using it for upload aar to maven central https://github.com/roc-streaming/roc-java/blob/main/android/roc-android/build.gradle#L2

But I guess it shouldn't be too hard to migrate to new maven-publish plugin :)

[gavv]

After fixing this, we'll need to add java17 step to CI jobs for linux and osx. Also we can switch release step to java17 too.