Question

我正在为scalac编写一个nsc插件。该项目由3个不同的模块组成：

核心（插件和用户代码中都使用的类）
的插件
的样品

我的build.sbt文件是

import sbt._
import Keys._

lazy val sharedSettings = Defaults.coreDefaultSettings ++ Seq(
  scalaVersion  := "2.12.1",
  organization  := "localhost",
  scalacOptions ++= Seq("-deprecation", "-feature", "-unchecked")
)


lazy val usePluginSettings = Seq(
    scalacOptions ++= {
      val jar = (Keys.`package` in (plugin, Compile)).value
      val addPlugin = "-Xplugin:" + jar.getAbsolutePath
      val dummy = "-Jdummy=" + jar.lastModified
      Seq(addPlugin, dummy)
    }
  )


lazy val main = Project(
    id = "main",
    base = file("."),
    aggregate = Seq(plugin, core, samples)
  )

lazy val core = Project(
    id = "core",
    base = file("core")
  ) settings (
    sharedSettings: _*
  ) settings (
    libraryDependencies += "com.typesafe.akka" %% "akka-actor" % "2.4.17"
  )

lazy val plugin = Project(
    id   = "typestate",
    base = file("plugin")
  ) settings (
    sharedSettings: _*
  ) settings (
    libraryDependencies += "org.scala-lang" % "scala-compiler" % scalaVersion.value
  ) dependsOn (core)

lazy val samples = Project(
    id   = "samples",
    base = file("samples")
  ) settings (
    libraryDependencies += "com.typesafe.akka" %% "akka-actor" % "2.4.17"
  ) settings (
    sharedSettings ++ usePluginSettings: _*
  ) dependsOn (core)

现在，当我尝试编译模块 samples 时，我得到一个java.lang.NoClassDefFoundError，其中引用了 core 模块中的类。但是，当删除usePluginSettings时，可以编译模块而不会出现任何错误。

据我所知，问题是由插件jar中缺少的核心工件引起的。我试图将sbt-assembly任务添加到构建中以获得一个胖子，但我没有成功。

有没有人有解决方案？

SBT：多项目导致NoClassDefFoundError

0 个答案: