sample usage of separate macro configuration

sbt/src/sbt-test/compiler-project/macro-config/build.sbt

@@ -0,0 +1,26 @@
+// Adds a "macro" configuration for macro dependencies.
+// By default, this includes the dependencies of the normal sources.
+// Drop the `extend(Compile)` to include no dependencies (not even scala-library) by default.
+ivyConfigurations += config("macro").hide.extend(Compile)
+
+// add the compiler as a dependency for src/macro/
+libraryDependencies <+=
+  scalaVersion("org.scala-lang" % "scala-compiler" % _ % "macro")
+
+// adds standard compile, console, package tasks for src/macro/
+inConfig(config("macro"))(Defaults.configSettings)
+
+// puts the compiled macro on the classpath for the main sources
+unmanagedClasspath in Compile <++=
+  fullClasspath in config("macro")
+
+// includes sources in src/macro/ in the main source package
+mappings in (Compile, packageSrc) <++=
+  mappings in (config("macro"), packageSrc)
+
+// Includes classes compiled from src/macro/ in the main binary
+// This can be omitted if the classes in src/macro/ aren't used at runtime
+mappings in (Compile, packageBin) <++=
+  mappings in (config("macro"), packageBin)
+
+scalaVersion := "2.10.0-M7"

sbt/src/sbt-test/compiler-project/macro-config/src/macro/scala/Def.scala

@@ -0,0 +1,16 @@
+import scala.reflect.macros.Context
+import language.experimental.macros
+
+object Def
+{
+  def desugar(a: Any): String = macro desugarImpl
+
+  def desugarImpl(c: Context)(a: c.Expr[Any]) = {
+    import c.universe._
+
+    val s = show(a.tree)
+    c.Expr(
+      Literal(Constant(s))
+    )
+  }
+}

sbt/src/sbt-test/compiler-project/macro-config/src/main/scala/Use.scala

@@ -0,0 +1,8 @@
+object Use
+{
+	def main(args: Array[String])
+	{
+		val str = Def.desugar(3 + 5)
+		assert(str == args(0), s"Expected '${args(0)}', got '$str'")
+	}
+}

sbt/src/sbt-test/compiler-project/macro-config/test

@@ -0,0 +1,2 @@
+> run 8
+-> run 9