Sample for Gradle forum question on binary task dependencies.

binaryTaskDependencies.gradle

@Managed
interface MyCmp extends VariantComponentSpec {
  String getSomething()
  void setSomething( String something )
}

@Managed
interface MyCmpBinOne extends BinarySpec {
  File getFile()
  void setFile( File file )
  String getContent()
  void setContent( String content )
}

@Managed
interface MyCmpBinTwo extends BinarySpec {
  File getFile()
  void setFile( File file )
  String getContent()
  void setContent( String content )
}

class MyRuleSource extends RuleSource {
  @ComponentType
  void registerMyCmp( TypeBuilder<MyCmp> builder ) {}

  @ComponentType
  void registerBinOne( TypeBuilder<MyCmpBinOne> builder ) {}

  @ComponentType
  void registerBinTwo( TypeBuilder<MyCmpBinTwo> builder ) {}

  @ComponentBinaries
  void createBinOneForCmp( ModelMap<MyCmpBinOne> binaries, MyCmp cmp, @Path("buildDir") buildDir ) {
    binaries.create( 'binaryOne' ) {
      file = new File( buildDir, "${cmp.name}.bin1" )
      content = cmp.something
    }
  }
  
  @ComponentBinaries
  void createBinTwoForCmp( ModelMap<MyCmpBinTwo> binaries, MyCmp cmp, @Path("buildDir") buildDir ) {
    binaries.create( 'binaryTwo' ) {
      file = new File( buildDir, "${cmp.name}.bin2" )
      content = cmp.something
    }
  }
  
  @BinaryTasks
  void createBinOneTasks( ModelMap<Task> tasks, MyCmpBinOne binOne ) {
    tasks.create( binOne.tasks.taskName( 'generate' ) ) {
      outputs.file binOne.file
      doLast {
        logger.lifecycle( "Building ${binOne.file}." )
        binOne.file.parentFile.mkdirs()
        binOne.file.text = binOne.content
      }
    }
  }
  
  @BinaryTasks
  void createBinTwoTasks( ModelMap<Task> tasks, MyCmpBinTwo binTwo ) {
    tasks.create( binTwo.tasks.taskName( 'generate' ) ) {
      outputs.file binTwo.file
      doLast {
        logger.lifecycle( "Building ${binTwo.file}." )
        binTwo.file.parentFile.mkdirs()
        binTwo.file.text = binTwo.content
      }
    }
  }
}

apply plugin: MyRuleSource

model {
  components {
    cmpOne( MyCmp )
    cmpTwo( MyCmp )
    withType( MyCmp ) {
      something 'Hello World!'
    }
  }
}