3

当我针对本地版本的 Scala 构建我的（相对复杂的）SBT 项目时，我收到以下错误：

scalac error: bad option: '-Ydelambdafy:method'

这可能是scalac我们构建文件中的错误。但是，直接调用时我无法重现此错误scalac：

$ scalac -Ydelambdafy:method test.scala

这按预期运行。有没有办法让 SBT 显示scalac它发出的确切命令？（请注意，将确切的标志从scalacOptionsto传递scalac也不会导致错误）。

scalacOptions是：

List(
  -deprecation,
  -unchecked,
  -feature,
  -encoding, utf8,
  -Ydelambdafy:method,
  -Xplugin:<...>/scala-js-test/compiler/target/scala-2.11.0-RC1/scalajs-compiler_2.11.0-RC1-0.4.1-SNAPSHOT.jar)`
)

有问题的存储库是Scala.js masterscalajs-library的子项目，其中当前Scala master的构建为.scalaHome

要为此构建配置项目，请发出：

set every List(scalaHome := Some(file("<scalaHome>")), scalaVersion := "2.11.0-RC1")

在根项目中。

4

2 回答 2

4

好吧，事情是这样的：sbt 实际上并没有调用“scalac”。它直接调用编译器，创建和调用正确的类。

然而，如果你使用的是 SBT 0.13+，你可以得到一个如果它直接运行它会运行的近似值，但是这样做：

export compile

该export命令也适用于其他一些任务，但绝不是所有这些任务。

于 2014-03-15T02:21:56.960 回答
3

我认为你需要的是debugthen compile。

[sbt-0-13-2]> help debug
debug

    Sets the global logging level to debug.
    This will be used as the default level for logging from commands, settings, and tasks.
    Any explicit `logLevel` configuration in a project overrides this setting.

--debug

    Sets the global logging level as described above, but does so before any other commands are executed on startup, including project loading.
    This is useful as a startup option:
        * it takes effect before any logging occurs
        * if no other commands are passed, interactive mode is still entered

[sbt-0-13-2]> debug
[debug] > shell
[sbt-0-13-2]> compile
[debug] > compile
[debug] Evaluating tasks: compile:compile
[debug] Running task... Cancelable: false, check cycles: false
...
[debug] Running cached compiler 3d61bf70, interfacing (CompilerInterface) with Scala compiler version 2.10.4-RC1
[debug] Calling Scala compiler with arguments  (CompilerInterface):
[debug]     -bootclasspath
[debug]     /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/classes:/Users/jacek/.ivy2/cache/org.scala-lang/scala-library/jars/scala-library-2.10.4-RC1.jar
[debug]     -classpath
[debug]     /Users/jacek/sandbox/so/sbt-0.13.2/target/scala-2.10/classes
[debug] Scala compilation took 77.142708 s
于 2014-03-14T21:03:49.973 回答