升级项目时 F# 3.0 编译器错误 FS0193

Question

我收到一个奇怪的消息 FSharp.Core - 构建我的一个较大项目时出现的相关错误，并且该错误不包含任何位置信息来帮助我追踪问题所在。

编译错误是 error FS0193: The module/namespace 'Microsoft.FSharp.Linq.RuntimeHelpers' from compilation unit 'FSharp.Core' did not contain the namespace, module or type 'LeafExpressionConverter'
起初我认为这是因为该项目使用了旧的 Powerpack LINQ 东西，所以我把它去掉了。然后我想这可能与使用 Entity Framework 4.3 而不是 5.0 有关，所以我升级了它。同样的错误。我仍在编译到 .NET 4.0，而不是 4.5 ......也许这是原因的一部分？

我比较了Doctypes.fsproj XML 与其他项目在同一个解决方案中，一切看起来都很正常。 FSharp.Core引用只是 <Reference Include="FSharp.Core" />
这是一个非常大的项目，所以创建这个错误的一个小的可重现版本可能需要我一段时间才能弄清楚，我想知道这里是否有人有一个快速的答案。

这是 MSBUILD 输出:

19> C:\Program Files (x86)\Microsoft SDKs\F#\3.0\Framework\v4.0\fsc.exe -o:obj\Debug\DTC.Doctypes.dll -g --debug:full --noframework --define:DEBUG --define:TRACE --doc:bin\Debug\Doctypes.XML --optimize- --tailcalls- --resource:statutes_ebook_cover.jpg -r:A:\svn\dtc\Publisher\Doctypes\bin\Debug\CsvHelper.dll -r:A:\svn\dtc\Publisher\Data\bin\Debug\DTC.Data.dll -r:A:\svn\dtc\Publisher\Formats\bin\Debug\DTC.Formats.dll -r:A:\svn\dtc\Publisher\Parser\bin\Debug\DTC.Parser.dll -r:A:\svn\dtc\Publisher\ReferenceParser\bin\Debug\DTC.ReferenceParser.dll -r:A:\svn\dtc\Publisher\Shared\bin\Debug\DTC.Shared.dll -r:A:\svn\dtc\Publisher\Solr\bin\Debug\DTC.Solr.dll -r:A:\svn\dtc\Publisher\Utilities\bin\Debug\DTC.Utilities.dll -r:A:\svn\dtc\Publisher\Doctypes\bin\Debug\EntityFramework.dll -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\FSharp\2.0\Runtime\v4.0\FSharp.Core.dll" -r:A:\svn\dtc\Publisher\packages\HtmlAgilityPack.1.4.6\lib\Net40\HtmlAgilityPack.dll -r:A:\svn\dtc\Publisher\packages\DotNetZip.1.9.1.8\lib\net20\Ionic.Zip.dll -r:A:\svn\dtc\Publisher\packages\LegislativeData.1.0.2773.180\lib\net40\LegislativeData.dll -r:A:\svn\dtc\Publisher\packages\LibrarianData.1.0.2773.6\lib\net40\Librarian.Data.dll -r:A:\svn\dtc\Lib\Office12\Microsoft.Office.Interop.Excel.dll -r:A:\svn\dtc\Lib\Office12\Microsoft.Office.Interop.Word.dll -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\mscorlib.dll" -r:A:\svn\dtc\Publisher\packages\Newtonsoft.Json.4.5.11\lib\net40\Newtonsoft.Json.dll -r:A:\svn\dtc\Publisher\Repository\bin\Debug\Repository.dll -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.ComponentModel.DataAnnotations.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Configuration.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Core.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Data.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Data.Entity.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Numerics.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Runtime.Serialization.dll" -r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Xml.dll" --target:library --warn:4 --warnaserror --warnaserror:76 --vserrors --validate-type-providers --LCID:1033 --utf8output --fullpaths --flaterrors --highentropyva- "C:\Users\dfitch\AppData\Local\Temp\.NETFramework,Version=v4.0.AssemblyAttributes.fs" Helpers.fs Paths.fs FolioImport.fs Epub.fs Kindle.fs Ebooks.fs SharedLaw.fsi SharedLaw.fs SharedIndex.fs HistoryLinks.fs AdministrativeCodeHeaders.fs AdministrativeCode.fs AdministrativeCodeTOC.fs AdministrativeCodeIndex.fs SCRHeaders.fs Register.fs StatuteHeaders.fs Statutes.fs StatutesTOC.fs StatutesIndex.fs CrossReferences.fs SupremeCourtRules.fs Constitution.fs SessionTypes.fs CrDocs.fs EmergencyRules.fs OracleSession.fs LatsSession.fs TestSessionData.fs Session.fs Votes.fs SessionText.fs FiscalEstimates.fs LatsBulletinIndex.fs SharedBulletinIndex.fs AuthorIndex.fs SubjectIndex.fs JournalIndex.fs CrIndex.fs ActIndex.fs SectionsAffected.fs LCAmendmentMemos.fs LCActMemos.fs LCDocuments.fs RecordsOfCommitteeProceedings.fs VetoMessages.fs AssemblyInfo.fs Journals.fs Calendars.fs ProposalText.fs AmendmentText.fs EnrolledBillsText.fs RDAttachments.fs ActText.fs Budget.fs LegislativeRules.fs DraftingManual.fs AdminRulesManual.fs DraftingFiles.fs ExecutiveOrders.fs CapitolHeadlines.fs TownLawForms.fs FolioBillHist.fs FolioLaw.fs FolioSessionImport.fsi FolioSessionImport.fs FolioSession.fs FolioMisc.fs FolioIndexes.fs FolioCr.fs Wislaw.fs Help.fs Disclaimers.fs Dnotes.fs CCC.fs LCMemos.fs oag.fs AdministrativeCodeCites.fs StatutesRepealedRenumbered.fs LRBUserProcedures.fs LRBDraftingManual.fs 
19>FSC: error FS0193: The module/namespace 'Microsoft.FSharp.Linq.RuntimeHelpers' from compilation unit 'FSharp.Core' did not contain the namespace, module or type 'LeafExpressionConverter'
19>C:\Program Files (x86)\Microsoft SDKs\F#\3.0\Framework\v4.0\Microsoft.FSharp.Targets(155,9): warning MSB5021: "Fsc" and its child processes are being terminated in order to cancel the build.
19>C:\Program Files (x86)\Microsoft SDKs\F#\3.0\Framework\v4.0\Microsoft.FSharp.Targets(155,9): error : Build was canceled.

Answer 1

您的 MSBuild 输出显示对...的引用
C:\Program Files (x86)\Reference Assemblies\Microsoft\FSharp\2.0\Runtime\v4.0\FSharp.Core.dll .

这是 FSharp.Core 的 F# 2.0 版本。您需要引用 F# 3.0 版本:
C:\Program Files (x86)\Reference Assemblies\Microsoft\FSharp\3.0\Runtime\v4.0\FSharp.Core.dll