From ffe58abac5f60d785b684bb249aee0153bddea3f Mon Sep 17 00:00:00 2001
From: Jim Lawson
Date: Mon, 19 Sep 2016 15:27:52 -0700
Subject: Add sbt-buildinfo support.

---
 build.sbt | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'build.sbt')

diff --git a/build.sbt b/build.sbt
index 02a0e9f5..fe22c95a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -93,6 +93,25 @@ lazy val chiselFrontend = (project in file("chiselFrontend")).
   dependsOn(coreMacros)
 
 lazy val chisel = (project in file(".")).
+  enablePlugins(BuildInfoPlugin).
+  settings(
+    // We should really be using name.value, but currently, the package is "Chisel" (uppercase first letter)
+    buildInfoPackage := /* name.value */ "chisel3",
+    buildInfoOptions += BuildInfoOption.BuildTime,
+    buildInfoKeys := Seq[BuildInfoKey](buildInfoPackage, version, scalaVersion, sbtVersion),
+    // Move the managed source directory where git won't complain about it,
+    //  and where we can easily package its files as part of the source jar artifact.
+    //  We'd like to use versionToArray(), slice(), and mkString() to convert an explicit
+    //  Scala version (like 2.10.6), into the leftmost two components (2.10),
+    //  but this seems to run afoul of assumptions sbt makes about the inclusion
+    //  of Scala-version-specfic code (we get
+    //    BuildInfo is already defined as case class BuildInfo
+    //  so use the full version spec.
+    //sourceManaged in Compile <<= (sourceDirectory in Compile, scalaVersion){ (s,v) => s / ("scala-" + versionToArray(v).slice(0,2).mkString(".") + "/src_managed") },
+    sourceManaged in Compile <<= (sourceDirectory in Compile, scalaVersion){ (s,v) => s / ("scala-" + v + "/src_managed") },
+    // Add the generated sources to the packagedSrc artifact since they are excluded by default.
+    mappings in (Compile, packageSrc) += { ((sourceManaged in Compile).value / "sbt-buildinfo" / "BuildInfo.scala") -> "BuildInfo.scala" }
+  ).
   settings(commonSettings: _*).
   settings(chiselSettings: _*).
   dependsOn(coreMacros).
-- 
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