Example code sharing in Gradle

build.gradle

// main build file, using code from buildSrc project....
// notice that the buildSrc project can be written in any JVM language!
task sayHello {
  doLast {
    println foo.MyFunctions.hello()
  }
}

buildSrc_build.gradle

// buildSrc/build.gradle
plugins {
    id 'groovy'
}

MyFunctions.groovy

// add this to buildSrc/src/main/groovy/foo/MyFunctions.groovy
package foo
class MyFunctions {
    static String hello() { 'hello' }
}