Auto-provisioning/auto-detection of IBM Semeru toolchains is broken with Gradle 7.6

[simon-spinner]

Expected Behavior

Build works with gradle 7.5.1 and jdks are auto provisioned as declared in build.gradle:

java {
    toolchain {
        languageVersion.set(JavaLanguageVersion.of(11))
        vendor = JvmVendorSpec.IBM_SEMERU
        implementation = JvmImplementation.J9
    }
}

Current Behavior

Upgrading to gradle 7.6 the build now fails with:

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':buildSrc:compileGroovy'.
> Could not resolve all dependencies for configuration ':buildSrc:compileClasspath'.
   > Failed to calculate the value of task ':buildSrc:compileJava' property 'javaCompiler'.
      > Unable to download toolchain matching the requirements ({languageVersion=11, vendor=IBM_SEMERU, implementation=J9}) from 'https://api.adoptopenjdk.net/v3/binary/latest/11/ga/linux/x64/jdk/openj9/normal/adoptopenjdk'.
         > Toolchain provisioned from 'https://api.adoptopenjdk.net/v3/binary/latest/11/ga/linux/x64/jdk/openj9/normal/adoptopenjdk' doesn't satisfy the specification: {languageVersion=11, vendor=IBM_SEMERU, implementation=J9}.

Context

Auto-detection/auto-provisioning of Gradle toolchains is broken with gradle 7.6

Steps to Reproduce

Your Environment

Detected toolchains:

❯ ./gradlew -q javaToolchains

 + Options
     | Auto-detection:     Enabled
     | Auto-download:      Enabled

 + IBM JDK 11.0.17+8
     | Location:           ~/.gradle/jdks/ibm-semeru-open-jdk_x64_linux_11/jdk-11.0.17+8
     | Language Version:   11
     | Vendor:             IBM
     | Architecture:       amd64
     | Is JDK:             true
     | Detected by:        Auto-provisioned by Gradle

 + IBM JDK 11.0.15+10
     | Location:           ~/.gradle/jdks/ibm_semeru-11-x64-openj9-linux/jdk-11.0.15+10
     | Language Version:   11
     | Vendor:             IBM
     | Architecture:       amd64
     | Is JDK:             true
     | Detected by:        Auto-provisioned by Gradle

[jbartok]

Is caused by the fact that the IBM Semeru JVMs for Java 11 provide the wrong metadata/vendor system property after minor version 14... Checking if we can work around it somehow.

[AdamBrousseau]

@jbartok could you please provide clarity on your previous statement? I don't quite understand where you/Gradle are getting Vendor: IBM Semeru Runtimes from. Perhaps it is a value set by Gradle or SDKMAN?
When we released 11.0.15 this year (2022) we corrected the java.vendor property back to IBM Corporation. I don't believe we have any system properties that are set to IBM Semeru Runtimes. I could be missing something.

Thanks,
Adam

Edit: I see now from the fix. Thanks.

[EdGue42]

@jbartok

I assume this means that one of the next nightly builds could be used for verifying your changes?

[jbartok]

@jbartok

I assume this means that one of the next nightly builds could be used for verifying your changes?

Yes, https://gradle.org/release-nightly/ should contain the fix (but this is a nightly for the upcoming 8.0 version).
7.6.1 should contain the fix too, but I don't see any nightlies available for that atm. Let me know if the above mentioned nightly is not ok for you to test with.

[EdGue42]

I changed my build setup to use jdk-11.0.17+8 and then pointed to gradle-8.0-20221216001954:

JAVA_HOME=/Users/xxxx/java/ibm/jdk-11.0.17+8/Contents/Home ./gradlew -q javaToolchain

• Options
  | Auto-detection: Enabled
  | Auto-download: Enabled

• IBM JDK 11.0.17+8
  | Location: /Users/guenthne/java/ibm/jdk-11.0.17+8/Contents/Home
  | Language Version: 11
  | Vendor: IBM
  | Architecture: x86_64
  | Is JDK: true
  | Detected by: Current JVM

So, that part is working.