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'gradlew run' cannot run sketch #1058

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#1054
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'gradlew run' cannot run sketch#1058
#1054
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bugSomething isn't working

Description

@Junology
Junology
opened on Apr 23, 2025

Most appropriate sub-area of Processing 4?

Build process

Processing version

commit hash ecd219b

Operating system

Linux (Ubuntu 20.04)

Steps to reproduce this

"1. Clone processing4 repo, and move to the project directory.

  1. ./gradlew run

  2. Hit the Run button, and get exception

java.io.IOException: Cannot run program "(...)/processing4/app/bin/java": error=2, No such file or directory

"

snippet



Additional context


After examining around processing.app.Platform.getJavaHome(), I realized that Processing cannot find java when the resource directory (app/build/compose/tmp/prepareAppResources in my case) does not contain it.

Is the directory supposed to contain a sort of JAVA_HOME for Processing, or should it just use system java as a fallback?


Would you like to work on the issue?


Yes
Activity
  1. Junology
    added 
    bugSomething isn't working
     on Apr 23, 2025
  2. Stefterv commented on Apr 23, 2025 
    @Stefterv
    Stefterv
    on Apr 23, 2025
    Member
    Thanks for the heads up!
    

    Could you check if you have the same issue with #1054 ? Otherwise we'll be fixing it and then breaking it again directly after 😅
    

    EDIT: Tested it myself, main has the issue you're describing when running from the command line and on #1054 it works fine
  3. Junology commented on Apr 23, 2025 
    @Junology
    Junology
    on Apr 23, 2025
    ContributorAuthor
    Thank you for your quick reply.
    
I tried the branch of #1054, and the build process (./gradlew run more precisely) failed with
    

    > Task :app:includeJdk FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:includeJdk'.
> Couldn't follow symbolic link '/usr/lib/jvm/java-17-openjdk-amd64/lib/src.zip'.


  4. Junology commented on Apr 23, 2025 
    @Junology
    Junology
    on Apr 23, 2025
    ContributorAuthor
    I just realized that /usr/lib/jvm/java-17-openjdk-amd64/lib/src.zip is indeed a symbolic link to ../../openjdk-17/src.zip which does not exist untill openjdk-17-source is installed (in Ubuntu).
    
After installing it, the build is completed.
    

    Thank you.
  5. SableRaf
    closed this as completedin #1054on Apr 25, 2025
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