failed to build the GCD module

[zhutmost]

Hi developers,

I'm trying to build the GCD module as follows,

package gcd

import chisel3._

/**
  * Compute GCD using subtraction method.
  * Subtracts the smaller from the larger until register y is zero.
  * value in register x is then the GCD
  */
class GCD extends Module {
  val io = IO(new Bundle {
    val value1        = Input(UInt(16.W))
    val value2        = Input(UInt(16.W))
    val loadingValues = Input(Bool())
    val outputGCD     = Output(UInt(16.W))
    val outputValid   = Output(Bool())
  })

  val x  = Reg(UInt())
  val y  = Reg(UInt())

  when(x > y) { x := x - y }
    .otherwise { y := y - x }

  when(io.loadingValues) {
    x := io.value1
    y := io.value2
  }

  io.outputGCD := x
  io.outputValid := y === 0.U
}

But it failed for some bugs I cannot solve. Here is the log of builder.

Thank you.

[edwardcwang]

Can you show us the Dragonfly.scala file?

[zhutmost]

Oh, it's just the file name of the gcd module.

[ucbjrl]

This looks like the Scala 2.12 problem with anonymous bundles. You need to copy the relevant sections of chisel-template/build.sbt that set the appropriate Scala compiler options to work around this.

…

On Fri, Aug 17, 2018 at 9:05 AM, edwardcwang ***@***.***> wrote: Can you show us the Dragonfly.scala file? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#35 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGh1wMNyuuAXImYBwDd48IKFc4JmgXbeks5uRunagaJpZM4WBz8k> .

[zhutmost]

Thank you, ucbjrl. I bumped the scalaVersion to 2.11.12. and solved.
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