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Gradle 'Execution failed for task ':recompMinecraft'


AngleWyrm

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Received this error from both available source builds:

  • forge-1.7.10-10.13.4.1492-1.7.10-src -- latest available at time of writing
  • forge-1.7.10-10.13.4.1448-1.7.10-src -- recommended build at time of writing

13:11:32.809  [org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler] Compiling with JDK Java compiler API.

...

13:11:32.866 [ERROR] [org.gradle.BuildExceptionReporter] > Cannot find System Java Compiler. Ensure that you have installed a JDK (not just a JRE) and configured your JAVA_HOME system variable to point to the according directory.

 

[spoiler=end of log]13:11:30.592 [iNFO] [org.gradle.execution.taskgraph.AbstractTaskPlanExecutor] :recompMinecraft (Thread[main,5,main]) started.

13:11:30.598 [LIFECYCLE] [class org.gradle.TaskExecutionLogger] :recompMinecraft

13:11:30.599 [DEBUG] [org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter] Starting to execute task ':recompMinecraft'

13:11:30.614 [DEBUG] [org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter] Determining if task ':recompMinecraft' is up-to-date

13:11:31.866 [iNFO] [org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter] Executing task ':recompMinecraft' (up-to-date check took 1.247 secs) due to:

No history is available.

13:11:31.871 [DEBUG] [org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter] Executing actions for task ':recompMinecraft'.

13:11:31.878 [iNFO] [org.gradle.api.internal.changedetection.changes.RebuildIncrementalTaskInputs] All input files are considered out-of-date for incremental task ':recompMinecraft'.

 

[The call to compiler was right here, but is clipped due to it's enormous size exceeding the limits of a forum post]

 

13:11:32.809 [iNFO] [org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler] Compiling with JDK Java compiler API.

13:11:32.815 [DEBUG] [org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter] Finished executing task ':recompMinecraft'

13:11:32.820 [LIFECYCLE] [class org.gradle.TaskExecutionLogger] :recompMinecraft FAILED

13:11:32.827 [iNFO] [org.gradle.execution.taskgraph.AbstractTaskPlanExecutor] :recompMinecraft (Thread[main,5,main]) completed. Took 2.229 secs.

13:11:32.832 [DEBUG] [org.gradle.execution.taskgraph.AbstractTaskPlanExecutor] Task worker [Thread[main,5,main]] finished, busy: 2 mins 3.108 secs, idle: 0.212 secs

13:11:32.841 [ERROR] [org.gradle.BuildExceptionReporter]

13:11:32.847 [ERROR] [org.gradle.BuildExceptionReporter] FAILURE: Build failed with an exception.

13:11:32.853 [ERROR] [org.gradle.BuildExceptionReporter]

13:11:32.857 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:

13:11:32.861 [ERROR] [org.gradle.BuildExceptionReporter] Execution failed for task ':recompMinecraft'.

13:11:32.866 [ERROR] [org.gradle.BuildExceptionReporter] > Cannot find System Java Compiler. Ensure that you have installed a JDK (not just a JRE) and configured your JAVA_HOME system variable to point to the according directory.

13:11:32.872 [ERROR] [org.gradle.BuildExceptionReporter]

13:11:32.876 [ERROR] [org.gradle.BuildExceptionReporter] * Exception is:

13:11:32.880 [ERROR] [org.gradle.BuildExceptionReporter] org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':recompMinecraft'.

13:11:32.884 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)

13:11:32.888 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)

13:11:32.893 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)

13:11:32.897 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)

13:11:32.901 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)

13:11:32.905 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)

13:11:32.910 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)

13:11:32.914 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)

13:11:32.917 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)

13:11:32.921 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:296)

13:11:32.925 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:79)

13:11:32.929 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)

13:11:32.934 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)

13:11:32.938 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)

13:11:32.942 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:86)

13:11:32.947 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)

13:11:32.951 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)

13:11:32.955 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)

13:11:32.959 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)

13:11:32.968 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)

13:11:32.972 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)

13:11:32.976 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54)

13:11:32.980 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:148)

13:11:32.984 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:105)

13:11:32.988 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:85)

13:11:32.993 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:81)

13:11:32.996 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)

13:11:33.000 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)

13:11:33.004 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:39)

13:11:33.008 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:29)

13:11:33.013 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50)

13:11:33.017 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:171)

13:11:33.021 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)

13:11:33.025 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)

13:11:33.030 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)

13:11:33.034 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)

13:11:33.038 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)

13:11:33.042 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)

13:11:33.046 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)

13:11:33.050 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)

13:11:33.054 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.Main.doAction(Main.java:33)

13:11:33.058 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)

13:11:33.062 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)

13:11:33.066 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)

13:11:33.070 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.GradleMain.main(GradleMain.java:23)

13:11:33.074 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)

13:11:33.079 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:127)

13:11:33.085 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:56)

 

13:11:33.088 [ERROR] [org.gradle.BuildExceptionReporter] Caused by: java.lang.RuntimeException: Cannot find System Java Compiler. Ensure that you have installed a JDK (not just a JRE) and configured your JAVA_HOME system variable to point to the according directory.

13:11:33.093 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.createCompileTask(Jdk6JavaCompiler.java:57)

13:11:33.097 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:44)

13:11:33.101 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:38)

13:11:33.105 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:96)

13:11:33.108 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:49)

13:11:33.112 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:35)

13:11:33.116 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:29)

13:11:33.120 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:20)

13:11:33.123 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:33)

13:11:33.128 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:24)

13:11:33.133 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:87)

13:11:33.137 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:65)

13:11:33.140 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:53)

13:11:33.144 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63)

13:11:33.148 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(AnnotationProcessingTaskFactory.java:235)

13:11:33.152 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:211)

13:11:33.156 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(AnnotationProcessingTaskFactory.java:222)

13:11:33.160 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:200)

13:11:33.164 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)

13:11:33.169 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)

13:11:33.173 [ERROR] [org.gradle.BuildExceptionReporter] ... 47 more

13:11:33.178 [ERROR] [org.gradle.BuildExceptionReporter]

13:11:33.182 [LIFECYCLE] [org.gradle.BuildResultLogger]

13:11:33.186 [LIFECYCLE] [org.gradle.BuildResultLogger] BUILD FAILED

13:11:33.190 [LIFECYCLE] [org.gradle.BuildResultLogger]

13:11:33.195 [LIFECYCLE] [org.gradle.BuildResultLogger] Total time: 3 mins 15.971 secs

 

 

Some things that I noticed:

  • %JAVA_HOME% is reported in the command window as JAVA_HOME=C:/Users/Public/AngleWyrm/prog/eclipse/jre and that folder contains the JDK 7u80 for windows i586 (x32) which works in eclipse.
  • From the log at 13:11:32.809: [iNFO] [org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler] Compiling with JDK Java compiler API.

It seems to be attempting to use jdk6 compiler, but there's no java 6 installed on my system. My PC has an admin-installed JRE8, and a manually pointed-to (via JAVA_HOME) extracted and unpacked JDK7.

 

Does it seem possible that the compiler call is not using the JAVA_HOME variable throughout? Is there a config file option or setting to force the use of JDK7 instead? Would it help?

 

Link to post on minecraftforum.net

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%JAVA_HOME% is reported in the command window as JAVA_HOME=C:/Users/Public/AngleWyrm/prog/eclipse/jre and that folder contains the JDK 7u80 for windows i586 (x32) which works in eclipse.

...

It seems to be attempting to use jdk6 compiler, but there's no java 6 installed on my system. My PC has an admin-installed JRE8, and a manually pointed-to (via JAVA_HOME) extracted and unpacked JDK7.

The JAVA_HOME must point directly at the JDK folder.

 

In case it wasn't clear, the .../eclipse/jre folder (JAVA_HOME) is the unzipped & unpacked JDK7. Am I missing something?

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This is how JDK7 is in my eclipse/jre folder:

 

@if "%DEBUG%"=="" echo off
rem Homebrew JDK Installer by AngleWyrm
rem Hard-coded for starting pass

rem Expectations:
set HOME=C:/Users/Public/AngleWyrm/prog
set UNZIP="%HOME%/toolbox/7zip/7za.exe"
set GRADLE_USER_HOME=%HOME%/projects/artifacts/gradle

set JAVA_HOME=%HOME%/eclipse/jre
if not exist %JAVA_HOME% do md %JAVA_HOME%
set UNPACK="%JAVA_HOME%/bin/unpack200.exe"
set PATH=%JAVA_HOME%/bin;%JAVA_HOME%/jre/bin;%PATH%
echo Paths set. JAVA_HOME=%JAVA_HOME%

rem Remove old jdk installation and extract tools.zip to jdk
rem if exist jdk rd jdk /S /Q

%UNZIP% x -o%JAVA_HOME% %HOME%/downloads/tools.zip 

%UNPACK% -r "%JAVA_HOME%/lib/tools.pack" "%JAVA_HOME%/lib/tools.jar"

%UNPACK% -r "%JAVA_HOME%/jre/lib/charsets.pack" "%JAVA_HOME%/jre/lib/charsets.jar"
%UNPACK% -r "%JAVA_HOME%/jre/lib/deploy.pack" "%JAVA_HOME%/jre/lib/deploy.jar"
%UNPACK% -r "%JAVA_HOME%/jre/lib/javaws.pack" "%JAVA_HOME%/jre/lib/javaws.jar"
%UNPACK% -r "%JAVA_HOME%/jre/lib/jfxrt.pack" "%JAVA_HOME%/jre/lib/jfxrt.jar"
%UNPACK% -r "%JAVA_HOME%/jre/lib/jsse.pack" "%JAVA_HOME%/jre/lib/jsse.jar"
%UNPACK% -r "%JAVA_HOME%/jre/lib/plugin.pack" "%JAVA_HOME%/jre/lib/plugin.jar"
%UNPACK% -r "%JAVA_HOME%/jre/lib/rt.pack" "%JAVA_HOME%/jre/lib/rt.jar"
echo Finished converting *.pack files to *.jar files

echo.
echo gradlew.bat setupDecompWorkspace eclipse --refresh-dependencies
pause
[/Code]

 

If you have another way that doesn't involve admin install rights, I'm all ears!

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Windows: Set environment variables for the JDK.

  • Go to Control Panel\System and Security\System, and click on Advanced System Settings on the left-hand side.
  • Click on Environment Variables.
  • Under System Variables, click New.
  • For Variable Name, input JAVA_HOME.
  • For Variable Value, input something similar to C:\Program Files\Java\jdk1.7.0_51 exactly as shown (or wherever your Java JDK installation is), and click Ok.
  • Scroll down to a variable named Path, and double-click on it.
  • Append ;%JAVA_HOME%\bin EXACTLY AS SHOWN and click Ok. Make sure the location is correct; double-check just to make sure.

That method requires administrator priveleges in order to access system settings, and thus it's not a portable solution.

 

I've got a pathsetup.bat that sets the environment variables within the console that will launch the gradlew install process, which is sufficient to then type 'javac' from the command line and get a usage report.

 

A note from the error log:

[ant:javac] warning: [options] bootstrap class path not set in conjunction with -source 1.6

[ant:javac] 1 warning

:downloadMcpTools

:downloadClient

:downloadServer

:mergeJars

So somewhere along the lines the flag "-source 1.6" is inserted into the stream.

 

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