Exception thrown building buildship from github

Help/Discuss Buildship
1

Hi,
I am gradle newbie. I want to use gradle for Eclipse plugins building.
I’ve cloned buildship github repository and tried to build the plugin using gradlew build. Unfortunately Exception has been thrown during build.
Stacktrace:

  • Exception is:
    org.gradle.api.tasks.TaskExecutionException: Execution failed for task ‘:installTargetPlatform’.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
    at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:74)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:55)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:32)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
    at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
    at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
    at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:153)
    at org.gradle.internal.Factories$1.create(Factories.java:22)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:150)
    at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:98)
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:92)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:92)
    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:83)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:94)
    at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:82)
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:49)
    at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:59)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:49)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
    at org.gradle.util.Swapper.swap(Swapper.java:38)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.HintGCAfterBuild.execute(HintGCAfterBuild.java:44)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
    at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
    at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:240)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
    at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
    Caused by: : Problem: failed to create task or type pom
    Cause: The name is undefined.
    Action: Check the spelling.
    Action: Check that any custom tasks/types have been declared.
    Action: Check that any / declarations have taken place.
    at org.apache.tools.ant.UnknownElement.getNotFoundException(UnknownElement.java:500)
    at org.apache.tools.ant.UnknownElement.makeObject(UnknownElement.java:432)
    at org.apache.tools.ant.UnknownElement.maybeConfigure(UnknownElement.java:164)
    at org.gradle.api.internal.project.ant.BasicAntBuilder.nodeCompleted(BasicAntBuilder.java:78)
    at org.gradle.api.internal.project.ant.BasicAntBuilder.doInvokeMethod(BasicAntBuilder.java:103)
    at eclipsebuild.mavenize.DeployMavenAntTaskExecutor$_deployBundle_closure1.doCall(DeployMavenAntTaskExecutor.groovy:66)
    at eclipsebuild.mavenize.DeployMavenAntTaskExecutor.deployBundle(DeployMavenAntTaskExecutor.groovy:65)
    at eclipsebuild.mavenize.DeployMavenAntTaskExecutor$deployBundle.call(Unknown Source)
    at eclipsebuild.mavenize.BundleMavenDeployer$_deployBundles_closure3$_closure13.doCall(BundleMavenDeployer.groovy:151)
    at eclipsebuild.mavenize.BundleMavenDeployer$_deployBundles_closure3.doCall(BundleMavenDeployer.groovy:150)
    at eclipsebuild.mavenize.BundleMavenDeployer.deployBundles(BundleMavenDeployer.groovy:149)
    at eclipsebuild.mavenize.BundleMavenDeployer.deploy(BundleMavenDeployer.groovy:56)
    at eclipsebuild.mavenize.BundleMavenDeployer$deploy.call(Unknown Source)
    at eclipsebuild.BuildDefinitionPlugin.installTargetPlatform(BuildDefinitionPlugin.groovy:270)
    at org.gradle.internal.metaobject.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:382)
    at org.gradle.internal.metaobject.BeanDynamicObject.invokeMethod(BeanDynamicObject.java:170)
    at org.gradle.internal.metaobject.ConfigureDelegate.invokeMethod(ConfigureDelegate.java:80)
    at eclipsebuild.BuildDefinitionPlugin$_addTaskInstallTargetPlatform_closure7$_closure16.doCall(BuildDefinitionPlugin.groovy:255)
    at org.gradle.api.internal.AbstractTask$ClosureTaskAction.execute(AbstractTask.java:587)
    at org.gradle.api.internal.AbstractTask$ClosureTaskAction.execute(AbstractTask.java:568)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
    ... 68 more

Do you have any suggestions what can be misconfigured?
Thanks in advance

2

No, everything should work out of the box, you just have to execute the following command from the checkout folder:

./gradlew build

The developer documentation contains up-to-date information about the optional arguments you can use.

You can run the build with the --info --stacktrace flags for further investigation. If you need more help just let us know.

3

I run the build from checkout folder using gradlew.bat on Windows machine. Build failed with error message: ‘could not load definitions from resource org/apache/maven/artifact/ant/antlib.xml. it could not be found’.
Do I need some additional libraries in ant installation folder?

4

No, you don’t need to anything additional. The failure message refers to a file from maven-ant-tasks dependency, that is defined in the Buildship build sources. I just checked, the dependency is available in the maven repository in use. Maybe the dependency is not resolved properly on your machine? I’m just guessing here, but maybe try running the build with the --refresh-dependencies argument.

5

Refreshing dependecies didn’t help. How can I check that dependency was properly resolved?

6

If the dependency cannot be resolved then the Gradle build would fail with a specific message, so we don’t have to worry about that. So at this point I can have only guesses why it doesn’t work for you. Let’s try a little debugging.

Here’s the problematic line in the build sources: https://github.com/eclipse/buildship/blob/master/buildSrc/src/main/groovy/eclipsebuild/mavenize/DeployMavenAntTaskExecutor.groovy#L32 . Before running the build change that to print the classpath (Mvn.class.getProtectionDomain().getCodeSource().getLocation())) and compare it with the dependency location. You should find the file at ~/.gradle/caches/modules-2/files-2.1/org.apache.maven/maven-ant-tasks/2.1.3/b09be554228d66d208e5fef5266844aacf443abc/maven-ant-tasks-2.1.3.jar

7

Mvn.class.getProtectionDomain().getCodeSource().getLocation() has proper value ~/.gradle/caches/modules-2/files-2.1/org.apache.maven/maven-ant-tasks/2.1.3/b09be554228d66d208e5fef5266844aacf443abc/maven-ant-tasks-2.1.3.jar but AntBuilder replaced first path token to current disk partition (no idea why) and resource wasn’t found. The workaround I found is moving checkout folder to C partition. Build was successful, but I don’t know how to run IDE with the plugin. Is there any task dedicated to this?