Why does IDEA report "Error:scalac: error while loading Object, Missing dependency 'object scala in compiler mirror'" building scala breeze?
Why does IDEA report "Error:scalac: error while loading Object, Missing dependency 'object scala in compiler mirror'" building scala breeze?
breeze 项目从命令行 sbt 构建良好：
sbt package
...
info] Done packaging.
[info] Packaging /shared/breeze/viz/target/scala-2.11/breeze-viz_2.11-0.11-SNAPSHOT.jar ...
[info] Done packaging.
[success] Total time: 238 s, completed Jan 27, 2015 9:40:03 AM
但是，在IntelliJ IDEA 14中做Build|Rebuild项目时反复出现以下错误：
Error:scalac: error while loading Object, Missing dependency 'object scala in compiler mirror', required by /Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/rt.jar(java/lang/Object.class)
这是完整的堆栈跟踪：
Error:scalac: Error: scala.tools.nsc.typechecker.Namers$Namer.enterExistingSym(Lscala/reflect/internal/Symbols$Symbol;)Lscala/tools/nsc/typechecker/Contexts$Context;
java.lang.NoSuchMethodError: scala.tools.nsc.typechecker.Namers$Namer.enterExistingSym(Lscala/reflect/internal/Symbols$Symbol;)Lscala/tools/nsc/typechecker/Contexts$Context;
at org.scalamacros.paradise.typechecker.Namers$Namer$class.enterSym(Namers.scala:41)
at org.scalamacros.paradise.typechecker.Namers$$anon.enterSym(Namers.scala:13)
at org.scalamacros.paradise.typechecker.AnalyzerPlugins$MacroPlugin$.pluginsEnterSym(AnalyzerPlugins.scala:35)
at scala.tools.nsc.typechecker.AnalyzerPlugins$$anon.custom(AnalyzerPlugins.scala:429)
at scala.tools.nsc.typechecker.AnalyzerPlugins$$anonfun.apply(AnalyzerPlugins.scala:371)
at scala.tools.nsc.typechecker.AnalyzerPlugins$$anonfun.apply(AnalyzerPlugins.scala:371)
at scala.collection.immutable.List.map(List.scala:273)
at scala.tools.nsc.typechecker.AnalyzerPlugins$class.invoke(AnalyzerPlugins.scala:371)
at scala.tools.nsc.typechecker.AnalyzerPlugins$class.pluginsEnterSym(AnalyzerPlugins.scala:423)
at scala.tools.nsc.Global$$anon.pluginsEnterSym(Global.scala:463)
at scala.tools.nsc.typechecker.Namers$Namer.enterSym(Namers.scala:274)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$enterSyms.apply(Namers.scala:500)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$enterSyms.apply(Namers.scala:499)
at scala.collection.LinearSeqOptimized$class.foldLeft(LinearSeqOptimized.scala:124)
at scala.collection.immutable.List.foldLeft(List.scala:84)
at scala.tools.nsc.typechecker.Namers$Namer.enterSyms(Namers.scala:499)
at scala.tools.nsc.typechecker.Namers$Namer.templateSig(Namers.scala:925)
at scala.tools.nsc.typechecker.Namers$Namer.moduleSig(Namers.scala:989)
at scala.tools.nsc.typechecker.Namers$Namer.getSig(Namers.scala:1526)
at scala.tools.nsc.typechecker.Namers$Namer.typeSig(Namers.scala:1541)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$$anonfun$apply.apply$mcV$sp(Namers.scala:781)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$$anonfun$apply.apply(Namers.scala:780)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$$anonfun$apply.apply(Namers.scala:780)
at scala.tools.nsc.typechecker.Namers$Namer.scala$tools$nsc$typechecker$Namers$Namer$$logAndValidate(Namers.scala:1568)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter.apply(Namers.scala:780)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter.apply(Namers.scala:772)
at scala.tools.nsc.typechecker.Namers$$anon.completeImpl(Namers.scala:1684)
at scala.tools.nsc.typechecker.Namers$LockingTypeCompleter$class.complete(Namers.scala:1692)
at scala.tools.nsc.typechecker.Namers$$anon.complete(Namers.scala:1682)
at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1483)
at scala.reflect.internal.SymbolTable.openPackageModule(SymbolTable.scala:286)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:63)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:59)
at scala.reflect.api.Trees$Traverser$$anonfun$traverseStats$$anonfun$apply.apply$mcV$sp(Trees.scala:2498)
at scala.reflect.api.Trees$Traverser.atOwner(Trees.scala:2507)
at scala.reflect.api.Trees$Traverser.traverseStats(Trees.scala:2497)
at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1326)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:66)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:59)
at scala.reflect.api.Trees$Traverser$$anonfun$traverseStats$$anonfun$apply.apply$mcV$sp(Trees.scala:2498)
at scala.reflect.api.Trees$Traverser.atOwner(Trees.scala:2507)
at scala.reflect.api.Trees$Traverser.traverseStats(Trees.scala:2497)
at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1326)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:66)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:59)
at scala.reflect.api.Trees$Traverser.apply(Trees.scala:2513)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon.apply(Analyzer.scala:71)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$applyPhase.apply$mcV$sp(Global.scala:441)
at scala.tools.nsc.Global$GlobalPhase.withCurrentUnit(Global.scala:432)
at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:441)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$run.apply(Global.scala:399)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$run.apply(Global.scala:399)
at scala.collection.Iterator$class.foreach(Iterator.scala:750)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1202)
at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:399)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1500)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1487)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1482)
at scala.tools.nsc.Global$Run.compile(Global.scala:1580)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:126)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:102)
at xsbt.CompilerInterface.run(CompilerInterface.scala:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:102)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:48)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)
at org.jetbrains.jps.incremental.scala.local.IdeaIncrementalCompiler.compile(IdeaIncrementalCompiler.scala:29)
at org.jetbrains.jps.incremental.scala.local.LocalServer.compile(LocalServer.scala:26)
at org.jetbrains.jps.incremental.scala.remote.Main$.make(Main.scala:65)
at org.jetbrains.jps.incremental.scala.remote.Main$.nailMain(Main.scala:23)
at org.jetbrains.jps.incremental.scala.remote.Main.nailMain(Main.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.martiansoftware.nailgun.NGSession.run(NGSession.java:319)
Scala 编译器和宏天堂版本之间存在版本不匹配。 Macro-paradise 是一个编译器插件，与 Scala 编译器紧密耦合，因此它是针对完整的 Scala 版本进行交叉编译的。检查 IntelliJ 使用的 Scala 版本并检查哪个 Scala 版本是 macro-paradise 编译的。
不确定 Intellij 的确切工作原理，但在 Eclipse 中有一个 "Scala Installation" 配置页面（类似于 JDK）。你可以设置一个匹配paradise版本的Scala Installation。也许 IntelliJ 也有类似的概念。
就我而言，我切换到 JDK8，现在它已成功构建。
breeze 项目从命令行 sbt 构建良好：
sbt package
...
info] Done packaging.
[info] Packaging /shared/breeze/viz/target/scala-2.11/breeze-viz_2.11-0.11-SNAPSHOT.jar ...
[info] Done packaging.
[success] Total time: 238 s, completed Jan 27, 2015 9:40:03 AM
但是，在IntelliJ IDEA 14中做Build|Rebuild项目时反复出现以下错误：
Error:scalac: error while loading Object, Missing dependency 'object scala in compiler mirror', required by /Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/rt.jar(java/lang/Object.class)
这是完整的堆栈跟踪：
Error:scalac: Error: scala.tools.nsc.typechecker.Namers$Namer.enterExistingSym(Lscala/reflect/internal/Symbols$Symbol;)Lscala/tools/nsc/typechecker/Contexts$Context;
java.lang.NoSuchMethodError: scala.tools.nsc.typechecker.Namers$Namer.enterExistingSym(Lscala/reflect/internal/Symbols$Symbol;)Lscala/tools/nsc/typechecker/Contexts$Context;
at org.scalamacros.paradise.typechecker.Namers$Namer$class.enterSym(Namers.scala:41)
at org.scalamacros.paradise.typechecker.Namers$$anon.enterSym(Namers.scala:13)
at org.scalamacros.paradise.typechecker.AnalyzerPlugins$MacroPlugin$.pluginsEnterSym(AnalyzerPlugins.scala:35)
at scala.tools.nsc.typechecker.AnalyzerPlugins$$anon.custom(AnalyzerPlugins.scala:429)
at scala.tools.nsc.typechecker.AnalyzerPlugins$$anonfun.apply(AnalyzerPlugins.scala:371)
at scala.tools.nsc.typechecker.AnalyzerPlugins$$anonfun.apply(AnalyzerPlugins.scala:371)
at scala.collection.immutable.List.map(List.scala:273)
at scala.tools.nsc.typechecker.AnalyzerPlugins$class.invoke(AnalyzerPlugins.scala:371)
at scala.tools.nsc.typechecker.AnalyzerPlugins$class.pluginsEnterSym(AnalyzerPlugins.scala:423)
at scala.tools.nsc.Global$$anon.pluginsEnterSym(Global.scala:463)
at scala.tools.nsc.typechecker.Namers$Namer.enterSym(Namers.scala:274)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$enterSyms.apply(Namers.scala:500)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$enterSyms.apply(Namers.scala:499)
at scala.collection.LinearSeqOptimized$class.foldLeft(LinearSeqOptimized.scala:124)
at scala.collection.immutable.List.foldLeft(List.scala:84)
at scala.tools.nsc.typechecker.Namers$Namer.enterSyms(Namers.scala:499)
at scala.tools.nsc.typechecker.Namers$Namer.templateSig(Namers.scala:925)
at scala.tools.nsc.typechecker.Namers$Namer.moduleSig(Namers.scala:989)
at scala.tools.nsc.typechecker.Namers$Namer.getSig(Namers.scala:1526)
at scala.tools.nsc.typechecker.Namers$Namer.typeSig(Namers.scala:1541)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$$anonfun$apply.apply$mcV$sp(Namers.scala:781)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$$anonfun$apply.apply(Namers.scala:780)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$$anonfun$apply.apply(Namers.scala:780)
at scala.tools.nsc.typechecker.Namers$Namer.scala$tools$nsc$typechecker$Namers$Namer$$logAndValidate(Namers.scala:1568)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter.apply(Namers.scala:780)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter.apply(Namers.scala:772)
at scala.tools.nsc.typechecker.Namers$$anon.completeImpl(Namers.scala:1684)
at scala.tools.nsc.typechecker.Namers$LockingTypeCompleter$class.complete(Namers.scala:1692)
at scala.tools.nsc.typechecker.Namers$$anon.complete(Namers.scala:1682)
at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1483)
at scala.reflect.internal.SymbolTable.openPackageModule(SymbolTable.scala:286)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:63)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:59)
at scala.reflect.api.Trees$Traverser$$anonfun$traverseStats$$anonfun$apply.apply$mcV$sp(Trees.scala:2498)
at scala.reflect.api.Trees$Traverser.atOwner(Trees.scala:2507)
at scala.reflect.api.Trees$Traverser.traverseStats(Trees.scala:2497)
at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1326)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:66)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:59)
at scala.reflect.api.Trees$Traverser$$anonfun$traverseStats$$anonfun$apply.apply$mcV$sp(Trees.scala:2498)
at scala.reflect.api.Trees$Traverser.atOwner(Trees.scala:2507)
at scala.reflect.api.Trees$Traverser.traverseStats(Trees.scala:2497)
at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1326)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)
at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:66)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon$$anon.traverse(Analyzer.scala:59)
at scala.reflect.api.Trees$Traverser.apply(Trees.scala:2513)
at scala.tools.nsc.typechecker.Analyzer$packageObjects$$anon.apply(Analyzer.scala:71)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$applyPhase.apply$mcV$sp(Global.scala:441)
at scala.tools.nsc.Global$GlobalPhase.withCurrentUnit(Global.scala:432)
at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:441)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$run.apply(Global.scala:399)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$run.apply(Global.scala:399)
at scala.collection.Iterator$class.foreach(Iterator.scala:750)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1202)
at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:399)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1500)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1487)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1482)
at scala.tools.nsc.Global$Run.compile(Global.scala:1580)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:126)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:102)
at xsbt.CompilerInterface.run(CompilerInterface.scala:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:102)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:48)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)
at org.jetbrains.jps.incremental.scala.local.IdeaIncrementalCompiler.compile(IdeaIncrementalCompiler.scala:29)
at org.jetbrains.jps.incremental.scala.local.LocalServer.compile(LocalServer.scala:26)
at org.jetbrains.jps.incremental.scala.remote.Main$.make(Main.scala:65)
at org.jetbrains.jps.incremental.scala.remote.Main$.nailMain(Main.scala:23)
at org.jetbrains.jps.incremental.scala.remote.Main.nailMain(Main.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.martiansoftware.nailgun.NGSession.run(NGSession.java:319)
Scala 编译器和宏天堂版本之间存在版本不匹配。 Macro-paradise 是一个编译器插件，与 Scala 编译器紧密耦合，因此它是针对完整的 Scala 版本进行交叉编译的。检查 IntelliJ 使用的 Scala 版本并检查哪个 Scala 版本是 macro-paradise 编译的。
不确定 Intellij 的确切工作原理，但在 Eclipse 中有一个 "Scala Installation" 配置页面（类似于 JDK）。你可以设置一个匹配paradise版本的Scala Installation。也许 IntelliJ 也有类似的概念。
就我而言，我切换到 JDK8，现在它已成功构建。