use build.sbt instead of jar files to collect packages

build.sbt

@@ -1,7 +1,20 @@
-organization := "edu.berkeley.cs"
+lazy val commonSettings = Seq(
+  organization := "edu.berkeley.cs",
+  version := "1.0",
+  scalaVersion := "2.11.12",
+  traceLevel := 15,
+  scalacOptions ++= Seq("-deprecation","-unchecked"),
+  libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.1" % "test",
+  libraryDependencies += "org.json4s" %% "json4s-native" % "3.5.3",
+  libraryDependencies += "org.scala-lang" % "scala-reflect" % scalaVersion.value,
+  addCompilerPlugin("org.scalamacros" % "paradise" % "2.1.0" cross CrossVersion.full),
+  resolvers ++= Seq(
+    Resolver.sonatypeRepo("snapshots"),
+    Resolver.sonatypeRepo("releases"),
+    Resolver.mavenLocal))
 
-version := "1.0"
+lazy val rocketchip = RootProject(file("rocket-chip"))
 
-name := "testchip-example"
+lazy val testchipip = project.settings(commonSettings).dependsOn(rocketchip)
 
-scalaVersion := "2.11.12"
+lazy val example = (project in file(".")).settings(commonSettings).dependsOn(testchipip)