[GRADLE-1458] Application plugin should use PATH variable Created: 27/Mar/11  Updated: 10/Feb/17  Resolved: 10/Feb/17

Status: Resolved
Project: Gradle
Affects Version/s: 1.0-milestone-1
Fix Version/s: None

Type: Bug
Reporter: Ben McCann Assignee: Unassigned
Resolution: Won't Fix Votes: 0


The script produced by the application plugin does all kinds of garbage to try and guess what JAVA_HOME is. It would be much simpler and preferable to use the java already on my PATH variable.

Comment by Ben McCann [ 10/Apr/11 ]

This is still an issue in 1.0-milestone-2.
Another idea I had for making this better is that it would be nice to define the CLASSPATH variable in an external file and then have the run script load it. That way if I want to create my own run script it's easier to have it use the same classpath.

Comment by Adam Murdoch [ 10/Apr/11 ]

If you don't set JAVA_HOME, the script will use the 'java' command from your PATH.

Effectively, all the garbage in the script does is `which java`. We should certainly clean it up to simplify the logic, but if we did so, there wouldn't be any actual change in behaviour. The script would use $JAVA_HOME/bin/java if set, otherwise `which java`.

Comment by Adam Murdoch [ 10/Apr/11 ]

@Ben, you can do this sort of thing already, without needing to change the scripts. Here's an example:

task classpathVar {
    def outputFile = file("${startScripts.outputDir}/classpath.sh")
    // These 2 make the task incremental
    outputs.file outputFile
    inputs.files startScripts.classpath
    // Generate the classpath script
    doLast {
        def classpath = startScripts.classpath.collect { "lib/${it.name}" }.join(':')
        outputFile.text = "CLASSPATH=$classpath"

startScripts.dependsOn classpathVar
Comment by Ben McCann [ 10/Apr/11 ]

It wasn't working for me despite having java on my path. Perhaps part of the problem is that it does 'which javac' instead of 'which java'. I compiled on one machine which had a JDK and then deployed on another which had only a JRE. Is there any reason it needs a JDK? Could it be changed to actually do 'which java' instead of 'which javac'? Thanks for the help!

Comment by René Gröschke (Inactive) [ 09/Jun/11 ]

I think "which javac" is a bug. It should be "which java" imho. I'll recheck this soon.

Comment by Benjamin Muschko [ 15/Nov/16 ]

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Comment by Benjamin Muschko [ 10/Feb/17 ]

Thanks again for reporting this issue. We haven't heard back from you after our inquiry from November 15th. We are closing this issue now. Please create an issue on GitHub if you still feel passionate about getting it resolved.

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