Exception on gradlew shadowJar

[IgorWolbers]

Expected Behavior

That the ./gradlew shadowJar command work with a clean install.

Actual Behavior

The command erred.

Steps to Reproduce

• Clean install of Raspberry Pi OS Lite 32 bit
• Follow the install instructions https://www.makeuseof.com/how-to-install-a-minecraft-bedrock-server-on-raspberry-pi/ until section Install Minecraft Bedrock Server on Raspberry Pi
• Follow the install instructions using the latest README.md as of 2023-03-03
• Error occurred on ./gradlew shadowJar

Debug information

Crashdump, Backtrace or Other Files

pi:~/Nukkit $ ./gradlew shadowJar
Downloading https://services.gradle.org/distributions/gradle-8.0.1-bin.zip
...........10%............20%............30%............40%............50%............60%...........70%............80%............90%............100%

Welcome to Gradle 8.0.1!

Here are the highlights of this release:
 - Improvements to the Kotlin DSL
 - Fine-grained parallelism from the first build with configuration cache
 - Configurable Gradle user home cache cleanup

For more details see https://docs.gradle.org/8.0.1/release-notes.html

Starting a Gradle Daemon (subsequent builds will be faster)
Invalid Java installation found at '/usr/lib/jvm/openjdk-11' (Common Linux Locations). It will be re-checked in the next build. This might have performance impact if it keeps failing. Run the 'javaToolchains' task for more details.

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':shadowJar'.
> Failed to calculate the value of task ':compileJava' property 'javaCompiler'.
   > SystemInfo is not supported on this operating system.

* 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 3m 45s

pi:~/Nukkit $ ./gradlew --version

------------------------------------------------------------
Gradle 8.0.1
------------------------------------------------------------

Build time:   2023-02-17 20:09:48 UTC
Revision:     68959bf76cef4d28c678f2e2085ee84e8647b77a

Kotlin:       1.8.10
Groovy:       3.0.13
Ant:          Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM:          11.0.18 (Raspbian 11.0.18+10-post-Raspbian-1deb11u1)
OS:           Linux 5.15.84-v7l+ arm

pi:~/Nukkit $ java --version
openjdk 11.0.18 2023-01-17
OpenJDK Runtime Environment (build 11.0.18+10-post-Raspbian-1deb11u1)
OpenJDK Server VM (build 11.0.18+10-post-Raspbian-1deb11u1, mixed mode)

[siom79]

I ran into the same issue. The problem is this line in the build.gradlefile:

vendor.set(JvmVendorSpec.ADOPTIUM)

After commenting it out, I was able to build the server on my Raspberry Pi 4 with openjdk-armf successfully.

[siom79]

The PR above fixes this problem for users that don't want to use or cannot use Adoptium JDK.

[siom79]

The root cause seems to be this gradle issue: gradle/gradle#19295
Hence, I have close the PR.

[aschwtzr]

I'm still getting this issue though I see it's been removed from the gradle file.

pi@pi4:~/Nukkit$ ./gradlew --version

------------------------------------------------------------
Gradle 8.0.1
------------------------------------------------------------

Build time:   2023-02-17 20:09:48 UTC
Revision:     68959bf76cef4d28c678f2e2085ee84e8647b77a

Kotlin:       1.8.10
Groovy:       3.0.13
Ant:          Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM:          11.0.18 (Ubuntu 11.0.18+10-post-Ubuntu-0ubuntu122.04)
OS:           Linux 5.15.0-1025-raspi arm

pi@pi4:~/Nukkit$ java --version
openjdk 11.0.18 2023-01-17
OpenJDK Runtime Environment (build 11.0.18+10-post-Ubuntu-0ubuntu122.04)
OpenJDK Server VM (build 11.0.18+10-post-Ubuntu-0ubuntu122.04, mixed mode)
pi@pi4:~/Nukkit$ ./gradlew shadowJar
Invalid Java installation found at '/usr/lib/jvm/openjdk-11' (Common Linux Locations). It will be re-checked in the next build. This might have performance impact if it keeps failing. Run the 'javaToolchains' task for more details.

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':shadowJar'.
> Failed to calculate the value of task ':compileJava' property 'javaCompiler'.
   > SystemInfo is not supported on this operating system.

* 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 3s

And the output of javaToolChains

pi@pi4:~/Nukkit$ ./gradlew javaToolchains

> Task :javaToolchains

Invalid Java installation found at '/usr/lib/jvm/openjdk-11' (Common Linux Locations). It will be re-checked in the next build. This might have performance impact if it keeps failing. Run the 'javaToolchains' task for more details.
 + Options
     | Auto-detection:     Enabled
     | Auto-download:      Enabled

 + Ubuntu JDK 11.0.18+10-post-Ubuntu-0ubuntu122.04
     | Location:           /usr/lib/jvm/java-11-openjdk-armhf
     | Language Version:   11
     | Vendor:             Ubuntu
     | Architecture:       arm
     | Is JDK:             true
     | Detected by:        Common Linux Locations

 + Invalid toolchains
     + /usr/lib/jvm/openjdk-11
       | Error:              A problem occurred starting process 'command '/usr/lib/jvm/openjdk-11/bin/java''
       |     Caused by:      Could not start '/usr/lib/jvm/openjdk-11/bin/java'
       |     Caused by:      Cannot run program "/usr/lib/jvm/openjdk-11/bin/java" (in directory "/home/pi/.gradle/.tmp/tmp-jvm9459728736584011795probe"): error=2, No such file or directory
       |     Caused by:      error=2, No such file or directory


BUILD SUCCESSFUL in 3s
1 actionable task: 1 executed

I'm not super familiar with Java but seems in my case there's also an issue with how the JDK was installed.

Edit: missed the comment earlier with the link to the Gradle issue. Seems this on their end and I'm not seeing any workarounds.

[SupremeMortal]

Installing Java 8 on your system should allow Gradle to pick up the installation and compile it correctly.