How to build?

[NatoBoram]

Hi! I'm looking to build this project, but I don't quite get it.

When I run gradlew build, I get this error :

FAILURE: Build failed with an exception.

• What went wrong:
  Could not initialize class org.codehaus.groovy.runtime.InvokerHelper

• 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 809ms

[NatoBoram]

Wrong command, I had to use gradle build. Sorry about that!

[coderbot16]

Building with ./gradlew should work just fine, if it fails then that's a bit concerning.

[WalkerKnapp]

This looks like the error you get when running new Gradle versions using JDK 7. Your global Gradle install is probably old, so it works with that Java version.

[NatoBoram]

Here's my global config at the moment.

------------------------------------------------------------
Gradle: 6.7.1
------------------------------------------------------------

Build time:   2020-11-16 17:09:24 UTC
Revision:     2972ff02f3210d2ceed2f1ea880f026acfbab5c0

Kotlin:       1.3.72
Groovy:       2.5.12
Ant:          Apache Ant(TM) version 1.10.8 compiled on May 10 2020
JVM:          15.0.1 (Oracle Corporation 15.0.1+9-18)
OS:           Windows 10 10.0 amd64

openjdk 15.0.1 2020-10-20
OpenJDK Runtime Environment (build 15.0.1+9-18)
OpenJDK 64-Bit Server VM (build 15.0.1+9-18, mixed mode, sharing)

OS: Windows 10 Pro x86_64
Kernel: 10.0.19042
CPU: Intel i5-3570K (4) @ 3.470GHz
Memory: 10027MiB / 24519MiB

Is there something out of date?

[WalkerKnapp]

That all looks fine, ¯\_(ツ)_/¯. It might be the other way around, with Iris's gradle wrapper not being up-to-date to support JDK 15. Try running this to upgrade its wrapper version, and try building again.

gradle wrapper --gradle-version=6.7.1

[NatoBoram]

BUILD SUCCESSFUL in 16s
7 actionable tasks: 3 executed, 4 up-to-date

That does seem to work 🤔

[WalkerKnapp]

Nice. @coderbot16 might want to bump the Gradle wrapper version for the project, then.