编译安装Rocket-Chip Generator时Scala报常量池索引错误求助

问题详情 #

编译Rocket-Chip Generator时触发Scala常量池索引错误，具体错误信息：

macros.compile scala.reflect.internal.FatalError: 
  bad constant pool index: 0 at pos: 48461
     while compiling: <no file>
        during phase: globalPhase=<no phase>, enteringPhase=<some phase>
     library version: version 2.13.10
    compiler version: version 2.13.10
  reconstructed args: -bootclasspath $HOME/.cache/coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.10/scala-library-2.13.10.jar -classpath $HOME/.cache/coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-reflect/2.13.10/scala-reflect-2.13.10.jar:$HOME/verilator-optimization/rocket-chip/macros/compile-resources:$HOME/verilator-optimization/rocket-chip/out/macros/compile.dest/classes

  last tree to typer: EmptyTree
       tree position: <unknown>
            tree tpe: <notype>
              symbol: null
           call site: <none> in <none>

== Source file context for tree position ==


    scala.reflect.internal.Reporting.abort(Reporting.scala:69)
    scala.reflect.internal.Reporting.abort$(Reporting.scala:65)
    scala.reflect.internal.SymbolTable.abort(SymbolTable.scala:28)
    scala.tools.nsc.symtab.classfile.ClassfileParser$ConstantPool.errorBadIndex(ClassfileParser.scala:408)
    scala.tools.nsc.symtab.classfile.ClassfileParser$ConstantPool.getExternalName(ClassfileParser.scala:263)
    scala.tools.nsc.symtab.classfile.ClassfileParser.readParamNames$1(ClassfileParser.scala:842)
    scala.tools.nsc.symtab.classfile.ClassfileParser.parseAttribute$1(ClassfileParser.scala:848)
    scala.tools.nsc.symtab.classfile.ClassfileParser.$anonfun$parseAttributes$6(ClassfileParser.scala:925)
    scala.tools.nsc.symtab.classfile.ClassfileParser.parseAttributes(ClassfileParser.scala:1497)
    scala.tools.nsc.symtab.classfile.ClassfileParser.parseMethod(ClassfileParser.scala:625)
    scala.tools.nsc.symtab.classfile.ClassfileParser.parseClass(ClassfileParser.scala:548)
    scala.tools.nsc.symtab.classfile.ClassfileParser.$anonfun$parse$2(ClassfileParser.scala:175)
    scala.tools.nsc.symtab.classfile.ClassfileParser.$anonfun$parse$1(ClassfileParser.scala:160)
    scala.tools.nsc.symtab.classfile.ClassfileParser.parse(ClassfileParser.scala:143)
    scala.tools.nsc.symtab.SymbolLoaders$ClassfileLoader.doComplete(SymbolLoaders.scala:342)
    scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.$anonfun$complete$2(SymbolLoaders.scala:249)
    scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:247)
    scala.reflect.internal.Symbols$Symbol.completeInfo(Symbols.scala:1563)
    scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1535)
    scala.reflect.internal.Definitions.scala$reflect$internal$Definitions$$enterNewMethod(Definitions.scala:48)
    scala.reflect.internal.Definitions$DefinitionsClass.String_$plus$lzycompute(Definitions.scala:1261)
    scala.reflect.internal.Definitions$DefinitionsClass.String_$plus(Definitions.scala:1261)
    scala.reflect.internal.Definitions$DefinitionsClass.syntheticCoreMethods$lzycompute(Definitions.scala:1583)
    scala.reflect.internal.Definitions$DefinitionsClass.syntheticCoreMethods(Definitions.scala:1565)
    scala.reflect.internal.Definitions$DefinitionsClass.symbolsNotPresentInBytecode$lzycompute(Definitions.scala:1596)
    scala.reflect.internal.Definitions$DefinitionsClass.symbolsNotPresentInBytecode(Definitions.scala:1596)
    scala.reflect.internal.Definitions$DefinitionsClass.init(Definitions.scala:1652)
    scala.tools.nsc.Global$Run.<init>(Global.scala:1236)
    xsbt.ZincCompiler$ZincRun.<init>(CallbackGlobal.scala:80)
    xsbt.CachedCompiler0.run(CompilerBridge.scala:161)
    xsbt.CachedCompiler0.run(CompilerBridge.scala:134)
    xsbt.CompilerBridge.run(CompilerBridge.scala:39)
    sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
    sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:193)
    scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)
    sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:248)
    sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:183)
    sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163)
    sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
    sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
    sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:211)
    sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:534)
    sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:534)
    sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:180)
    sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:178)
    sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:464)
    sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
    sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
    sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
    sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
    sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:419)
    sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:506)
    sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:406)
    sbt.internal.inc.Incremental$.apply(Incremental.scala:172)
    sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:534)
    sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:488)
    sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
    sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:425)
    sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
    mill.scalalib.worker.ZincWorkerImpl.compileInternal(ZincWorkerImpl.scala:544)
    mill.scalalib.worker.ZincWorkerImpl.$anonfun$compileMixed$1(ZincWorkerImpl.scala:334)
    mill.api.FixSizedCache.withCachedValue(FixSizedCache.scala:66)
    mill.scalalib.worker.ZincWorkerImpl.withCompilers(ZincWorkerImpl.scala:414)
    mill.scalalib.worker.ZincWorkerImpl.compileMixed(ZincWorkerImpl.scala:333)
    mill.scalalib.ScalaModule.$anonfun$compile$2(ScalaModule.scala:280)
    mill.define.Task$TraverseCtx.evaluate(Task.scala:71)

我的环境信息：

• CPU架构：aarch64
• 系统：Ubuntu 22.04
• Scala版本：

$scala -version
Scala code runner version 3.4.2 -- Copyright 2002-2024, LAMP/EPFL

解决方法 #

核心原因 #

错误日志显示构建工具实际使用的是Scala 2.13.10，但本地全局安装的是Scala 3.4.2。Scala 3与Scala 2的字节码不兼容，加上aarch64架构的依赖适配问题，导致类文件解析时出现常量池索引错误。

具体步骤 #

1. 清理构建缓存，重新拉取依赖
   Rocket-Chip使用Mill作为构建工具，会自动管理所需的Scala版本，无需依赖全局Scala。执行以下命令清理缓存：

   cd rocket-chip
   rm -rf out .mill ~/.cache/coursier
   

   之后重新运行构建命令，Mill会自动下载并使用正确的Scala 2.13.10版本。

2. 屏蔽全局Scala版本干扰
   如果全局Scala仍影响构建，可临时屏蔽其环境变量，再执行构建：

   env PATH=$(echo $PATH | tr ':' '\n' | grep -v scala | tr '\n' ':') ./mill <你的构建命令>
   

   替换<你的构建命令>为实际需要执行的Rocket-Chip构建指令（如rocketchip.compile）。

3. 验证aarch64依赖完整性
   若重新构建仍报错，检查是否存在aarch64架构下的依赖缺失或损坏。可手动确认coursier缓存中的Scala jar包完整性，或修改~/.coursier/config.json配置国内镜像源加速依赖下载。

内容的提问来源于stack exchange，提问作者季子墨