Follow the instructions to build RL4J but error reported

RL4J
1

Have followed the instructions to build RL4J from RL4J by the instruction:
mvn install
but it reported the following error:
…
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for rl4j 1.0.0-SNAPSHOT:
[INFO]
[INFO] rl4j … FAILURE [ 2.552 s]
[INFO] rl4j-api … SKIPPED
[INFO] rl4j-core … SKIPPED
[INFO] rl4j-gym … SKIPPED
[INFO] rl4j-doom … SKIPPED
[INFO] rl4j-ale … SKIPPED
[INFO] rl4j-malmo … SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.489 s
[INFO] Finished at: 2022-10-16T23:11:10+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.4.1:enforce (enforce-choice-of-nd4j-test-backend) on project rl4j: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed. → [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] MojoExecutionException - Apache Maven - Apache Software Foundation
What could be the cause? How to fix it? Thanks in advance!

2

Take a look further up in your log and look for “enforcer” or something like that, it will tell you exactly what the issue is.

3

Hi, dear treo. Thanks for your reply. The last debug output is something like:

[INFO] — maven-enforcer-plugin:1.4.1:enforce (enforce-choice-of-nd4j-test-backend) @ rl4j —
[DEBUG] Configuring mojo org.apache.maven.plugins:maven-enforcer-plugin:1.4.1:enforce from plugin realm ClassRealm[plugin>org.apache.maven.plugins:maven-enforcer-plugin:1.4.1, parent: jdk.internal.loader.ClassLoaders$AppClassLoader@6d5380c2]
[DEBUG] Configuring mojo ‘org.apache.maven.plugins:maven-enforcer-plugin:1.4.1:enforce’ with basic configurator →
[DEBUG] (s) fail = true
[DEBUG] (s) failFast = false
[DEBUG] (f) ignoreCache = false
[DEBUG] (f) mojoExecution = org.apache.maven.plugins:maven-enforcer-plugin:1.4.1:enforce {execution: enforce-choice-of-nd4j-test-backend}
[DEBUG] (s) project = MavenProject: org.deeplearning4j:rl4j:1.0.0-SNAPSHOT @ D:\deeplearning4j\rl4j\pom.xml
[DEBUG] (s) profiles = nd4j-tests-cpu,nd4j-tests-cuda
[DEBUG] (s) all = false
[DEBUG] (s) rules = [org.apache.maven.plugins.enforcer.RequireActiveProfile@e706aa]
[DEBUG] (s) session = org.apache.maven.execution.MavenSession@37baddde
[DEBUG] (s) skip = false
[DEBUG] – end configuration –
[DEBUG] Executing rule: org.apache.maven.plugins.enforcer.RequireActiveProfile
[DEBUG] Adding failure due to exception
org.apache.maven.enforcer.rule.api.EnforcerRuleException: Profile “nd4j-tests-cpu” is not activated.
Profile “nd4j-tests-cuda” is not activated.

  • at org.apache.maven.plugins.enforcer.RequireActiveProfile.execute (RequireActiveProfile.java:121)*
  • at org.apache.maven.plugins.enforcer.EnforceMojo.execute (EnforceMojo.java:193)*
  • at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)*
  • at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)*
  • at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)*
  • at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)*
  • at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)*
  • at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)*
  • at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)*
  • at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)*
  • at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)*
  • at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)*
  • at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)*
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)*
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)*
  • at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)*
  • at java.lang.reflect.Method.invoke (Method.java:566)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)*
    [WARNING] Rule 0: org.apache.maven.plugins.enforcer.RequireActiveProfile failed with message:
    Profile “nd4j-tests-cpu” is not activated.
    Profile “nd4j-tests-cuda” is not activated.

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for rl4j 1.0.0-SNAPSHOT:
[INFO]
[INFO] rl4j … FAILURE [ 4.209 s]
[INFO] rl4j-api … SKIPPED
[INFO] rl4j-core … SKIPPED
[INFO] rl4j-gym … SKIPPED
[INFO] rl4j-doom … SKIPPED
[INFO] rl4j-ale … SKIPPED
[INFO] rl4j-malmo … SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.403 s
[INFO] Finished at: 2022-10-17T19:46:29+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.4.1:enforce (enforce-choice-of-nd4j-test-backend) on project rl4j: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed. → [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.4.1:enforce (enforce-choice-of-nd4j-test-backend) on project rl4j: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed.

  • at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:375)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)*
  • at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)*
  • at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)*
  • at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)*
  • at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)*
  • at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)*
  • at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)*
  • at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)*
  • at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)*
  • at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)*
  • at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)*
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)*
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)*
  • at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)*
  • at java.lang.reflect.Method.invoke (Method.java:566)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)*
    Caused by: org.apache.maven.plugin.MojoExecutionException: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed.
  • at org.apache.maven.plugins.enforcer.EnforceMojo.execute (EnforceMojo.java:237)*
  • at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)*
  • at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)*
  • at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)*
  • at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)*
  • at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)*
  • at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)*
  • at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)*
  • at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)*
  • at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)*
  • at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)*
  • at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)*
  • at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)*
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)*
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)*
  • at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)*
  • at java.lang.reflect.Method.invoke (Method.java:566)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)*
  • at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)*
    [ERROR]
    [ERROR]
    [ERROR] For more information about the errors and possible solutions, please read the following articles:
    [ERROR] [Help 1] MojoExecutionException - Apache Maven - Apache Software Foundation

How can I activate “nd4j-tests-cpu” and “nd4j-tests-cuda”? Thanks in advance!

4

It looks like you are building with tests enabled. Disable them with -DskipTests=true on the mvn command line.