build.gradle

apply plugin: 'java'
apply plugin: 'application'
apply plugin: 'com.github.johnrengelman.shadow'

evaluationDependsOn(':wpilibj')

mainClassName = 'edu.wpi.first.wpilibj.RobotBase'

buildscript {
    repositories { jcenter() }
    dependencies {
        classpath 'com.github.jengelman.gradle.plugins:shadow:1.2.3'
    }
}

def wpilibj = project(':wpilibj')

dependencies {
    compile wpilibj
    compile files(wpilibj.sourceSets.test.output.classesDir)
    compile 'edu.wpi.first.wpilib.networktables.java:NetworkTables:3.0.0-SNAPSHOT:arm'
}

build.dependsOn shadowJar

jar {
    manifest { attributes 'Robot-Class': 'MyRobot' }
}