sbt - SBT 项目定义文件的弃用和功能警告

Question

在编译我的 SBT 项目定义(即 project 目录中的文件)时，我收到了弃用和功能警告。 SBT 版本是 0.13.0。

我没有通过设置 scalacOptions := Seq("-feature", "-deprecation") 获得更多关于这些的信息，这似乎只适用于项目源文件而不适用于项目定义文件。

任何人都知道如何在编译项目定义时为编译器设置弃用和警告？

[info] Loading project definition from /home/xxx/website/project
[warn] there were 2 deprecation warning(s); re-run with -deprecation for details
[warn] there were 4 feature warning(s); re-run with -feature for details
[warn] two warnings found

Answer 1

创建 project/build.sbt具有以下内容的项目定义文件:

scalacOptions := Seq("-feature", "-deprecation")

由于任何 *.sbt文件下 project属于元(构建)项目，它为构建配置设置 Scala 编译器，而不是构建项目的环境。

它使用示例 sbt 多项目进行了测试:

[info] Compiling 1 Scala source to /Users/jacek/sandbox/so/multi-0.13.1/project/target/scala-2.10/sbt-0.13/classes...
[warn] /Users/jacek/sandbox/so/multi-0.13.1/project/Build.scala:4: method error in object Predef is deprecated: Use `sys.error(message)` instead
[warn]   lazy val e = error("Launcher did not provide the Ivy home directory.")
[warn]                ^
[warn] one warning found

...当它编译以下 project/Build.scala :

import sbt._

object Build extends Build {
  lazy val e = error("Launcher did not provide the Ivy home directory.")
}