Add classpath in manifest using Gradle

Question

I would like my Gradle build script to add the complete Classpath to the manifest file contained in JAR file created after the build.

Example:

Manife         


        

Answer 1

I know this is likely trivial for the groovy people here, but in my case, I wanted to change the location of the Class-Path in the manifest file depending on whether I was going to run in the production environment or local environment. I did this by making my build.gradle's jar section look like this:

jar {
  from configurations.runtime
  manifest {
    attributes ('Main-Class': 'com.me.Main',
                'Class-Path': configurations.runtime.files.collect { jarDir+"/$it.name" }.join(' ')
               )
  }
}

In this case, the argument to gradle build is passed like so:

$ gradle build -PjarDir="/opt/silly/path/"