Andy Lester created SOLR-15888:
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Summary: Confusing error message when javac is not installed
Key: SOLR-15888
URL: https://issues.apache.org/jira/browse/SOLR-15888
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Components: Gradle
Reporter: Andy Lester
I was trying to get gradlew going but did not have the proper
java-11-openjdk-devel package installed. This meant I didn't have javac
installed.
gradlew tries to do compile WrapperDownloader early on, and the error message
was very confusing:
{{Exception in thread "main" java.lang.IllegalArgumentException: error: release
version 11 not supported}}
{{ at
jdk.compiler/com.sun.tools.javac.main.Arguments.reportDiag(Arguments.java:891)}}
{{ at
jdk.compiler/com.sun.tools.javac.main.Arguments.handleReleaseOptions(Arguments.java:311)}}
{{ at
jdk.compiler/com.sun.tools.javac.main.Arguments.processArgs(Arguments.java:350)}}
{{ at
jdk.compiler/com.sun.tools.javac.main.Arguments.init(Arguments.java:246)}}
{{ at
jdk.compiler/com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:185)}}
{{ at
jdk.compiler/com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:119)}}
{{ at jdk.compiler/com.sun.tools.javac.launcher.Main.compile(Main.java:364)}}
{{ at jdk.compiler/com.sun.tools.javac.launcher.Main.run(Main.java:176)}}
{{ at jdk.compiler/com.sun.tools.javac.launcher.Main.main(Main.java:119)}}
{{\nSomething went wrong. Make sure you're using Java 11 or later.}}
The first line says "release version 11 not supported" and the last says "Make
sure you're using Java 11." Those seem contradictory. [~bunchr] came to my
rescue and suggested that I needed javac, and that led me to get the right
package installed.
(Also, there's an incorrect literal "\n" in the last line)
Maybe an explicit check for javac before trying to build, and corresponding
specific error message, would help better identify the problem.
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