aerror2/ilspy-for-macosx

ILSpy for Mac OS X ,Linux and any mono supported platform

ilspy-for-macosx's Issues

READ: Better way to use official ILSpy command-line tool on Mac, Windows and Linux

Step 1:

• Mac) Install Visual Studio for Mac (http://visualstudio.microsoft.com/vs/mac/). It has MonoDevelop, all .NET tools, a full IDE, etc...
• Windows) Install Visual Studio or any other way to get the "dotnet" command line tool.
• Linux) Get the "dotnet" command line tool.

Step 2: Go to a Terminal prompt and type dotnet tool install ilspycmd -g to install the official ilspy command line version.

Step 3: Read usage instructions here: https://github.com/icsharpcode/ILSpy/tree/master/ICSharpCode.Decompiler.Console. It is very simple. Most of the time you just run it with ilspycmd -p -o <folder> <dll file> to decompile to an output folder and make a buildable project file (that is what -p does).

Unhandled Exception: System.IO.IOException: The directory name is invalid.

I'm getting an error when trying to decompile a dll like follows :

$ mono ILSpyMac.exe -n Example -l . test.dll
Decompiling all dll in  test.dll
Please wait...

Unhandled Exception:
System.IO.IOException: The directory name is invalid.
  at System.IO.Directory.ValidateDirectoryListing (System.String path, System.String searchPattern, System.Boolean& stop) [0x00056] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at System.IO.Directory.GetFileSystemEntries (System.String path, System.String searchPattern, System.IO.FileAttributes mask, System.IO.FileAttributes attrs) [0x00023] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00000] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at System.IO.DirectoryInfo.GetFiles (System.String searchPattern) [0x00011] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at (wrapper remoting-invoke-with-check) System.IO.DirectoryInfo:GetFiles (string)
  at Decomplier.MainClass.Main (System.String[] args) [0x002cc] in <ae02bc22782143e1890d112c47a28c3c>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.IO.IOException: The directory name is invalid.
  at System.IO.Directory.ValidateDirectoryListing (System.String path, System.String searchPattern, System.Boolean& stop) [0x00056] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at System.IO.Directory.GetFileSystemEntries (System.String path, System.String searchPattern, System.IO.FileAttributes mask, System.IO.FileAttributes attrs) [0x00023] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00000] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at System.IO.DirectoryInfo.GetFiles (System.String searchPattern) [0x00011] in <dca3b561b8ad4f9fb10141d81b39ff45>:0 
  at (wrapper remoting-invoke-with-check) System.IO.DirectoryInfo:GetFiles (string)
  at Decomplier.MainClass.Main (System.String[] args) [0x002cc] in <ae02bc22782143e1890d112c47a28c3c>:0 

The dll is in the same folder with ILSpyMac.exe and all the other related dlls

The .NET framework is 4.6.1.5

$ ls -l /Library/Frameworks/Mono.framework/Versions/
total 8
drwxr-xr-x  12 root  admin  408 Oct 13 19:50 3.10.0
drwxr-xr-x  11 root  admin  374 Nov  3 10:24 4.6.1
lrwxr-xr-x   1 root  admin   49 Nov  3 10:24 Current -> /Library/Frameworks/Mono.framework/Versions/4.6.1

Options may not be valid

Hello，I am a newcomer to macOS
When I input
mono ILSpyMac.exe -n project -l PathA PathB
the program can be normal operation，but when I input
mono ILSpyMac.exe -a -n project -l PathA PathB
Terminal output "Unexpected options -a"
What should I do? Thanks

DecompilerException

@aerror2

Unhandled Exception:
ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Collections.IEnumerator CheapUtil.Proxy.ShareProxy::ShareCapture(cn.sharesdk.unity3d.PlatformType,System.String,System.String)
 ---> System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in <ffb99659fc1c47faa4d5f883014d08aa>:0 
  at ICSharpCode.Decompiler.ILAst.YieldReturnDecompiler.ScanLine (ICSharpCode.Decompiler.ILAst.YieldVMStat vm, System.Int32 start, System.Int32 stop) [0x003d9] in <866ff2c369f1446d8bb4c6082bec9b05>:0 
  at ICSharpCode.Decompiler.ILAst.YieldReturnDecompiler.AnalyzeMoveNext2 () [0x00986] in <866ff2c369f1446d8bb4c6082bec9b05>:0 
  at ICSharpCode.Decompiler.ILAst.YieldReturnDecompiler.Run () [0x00006] in <866ff2c369f1446d8bb4c6082bec9b05>:0 
  at ICSharpCode.Decompiler.ILAst.YieldReturnDecompiler.Run (ICSharpCode.Decompiler.DecompilerContext context, ICSharpCode.Decompiler.ILAst.ILBlock method) [0x0003c] in <866ff2c369f1446d8bb4c6082bec9b05>:0 
  at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize (ICSharpCode.Decompiler.DecompilerContext context, ICSharpCode.Decompiler.ILAst.ILBlock method, ICSharpCode.Decompiler.ILAst.ILAstOptimizationStep abortBeforeStep) [0x000a2] in <866ff2c369f1446d8bb4c6082bec9b05>:0 
  at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody (System.Collections.Generic.IEnumerable`1[T] parameters) [0x00063] in <866ff2c369f1446d8bb4c6082bec9b05>:0 
  at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody (Mono.Cecil.MethodDefinition methodDef, ICSharpCode.Decompiler.DecompilerContext context, System.Collections.Generic.IEnumerable`1[T] parameters) [0x00051] in <866ff2c369f1446d8bb4c6082bec9b05>:0 
   --- End of inner exception stack trace ---

Is this a miss dependency error?

And I use:

mono /Users/yi/Developer/source/ILSpy-For-MacOSX/ILSpyMac/bin/Release/ILSpyMac.exe -n xj_cs ~/source/game/xj/assets/bin/Data/Managed/ -D Assembly-CSharp.dll

Can't compile it in Debian

Hi,

I'm having trouble compiling the source code in debian stretch using mono. Currently I'm using a docker image for Debian. As I'm using docker, I can't use GUI apps, so it's not possible for me to follow the steps in the readme.

Here is the output of some of the commands I tried. It's the first time I use mono so I'm not sure whether I'm doing it correctly or not.

root@06e3e39cc06d:/tmpfs/ILSpy-For-MacOSX# mcs ILSpyMac.sln -sdk:4

ILSpyMac.sln(2,0): error CS1525: Unexpected symbol `Microsoft'
ILSpyMac.sln(4,0): error CS1024: Wrong preprocessor directive
ILSpyMac.sln(4,78): error CS1009: Unrecognized escape sequence `\M'
ILSpyMac.sln(6,90): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(6,113): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(8,97): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(8,127): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(10,102): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(12,74): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(174,17): error CS1009: Unrecognized escape sequence `\I'

root@06e3e39cc06d:/tmpfs/ILSpy-For-MacOSX# mcs ILSpyMac.sln

ILSpyMac.sln(2,0): error CS1525: Unexpected symbol `Microsoft'
ILSpyMac.sln(4,0): error CS1024: Wrong preprocessor directive
ILSpyMac.sln(4,78): error CS1009: Unrecognized escape sequence `\M'
ILSpyMac.sln(6,90): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(6,113): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(8,97): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(8,127): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(10,102): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(12,74): error CS1009: Unrecognized escape sequence `\I'
ILSpyMac.sln(174,17): error CS1009: Unrecognized escape sequence `\I'
Compilation failed: 10 error(s), 0 warnings
root@06e3e39cc06d:/tmpfs/ILSpy-For-MacOSX# 

xbuild

XBuild Engine Version 14.0
Mono, Version 4.6.2.0
Copyright (C) 2005-2013 Various Mono authors

Build started 11/15/2017 22:30:57.
__________________________________________________
Project "/tmpfs/ILSpy-For-MacOSX/ILSpyMac.sln" (default target(s)):
        Target ValidateSolutionConfiguration:
                Building solution configuration "Debug|x86".
        Target Build:
                Project "/tmpfs/ILSpy-For-MacOSX/Mono.Cecil/Mono.Cecil.csproj" (default target(s)):
                        Target PrepareForBuild:
                                Configuration: net_2_0_Debug Platform: AnyCPU
                        Target GenerateSatelliteAssemblies:
                        No input files were specified for target GenerateSatelliteAssemblies, skipping.
                        Target CoreCompile:
                        Skipping target "CoreCompile" because its outputs are up-to-date.
                Done building project "/tmpfs/ILSpy-For-MacOSX/Mono.Cecil/Mono.Cecil.csproj".
                Project "/tmpfs/ILSpy-For-MacOSX/NRefactory/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj" (default target(s)):
                        Target PrepareForBuild:
                                Configuration: Debug Platform: AnyCPU
                        Target GenerateSatelliteAssemblies:
                        No input files were specified for target GenerateSatelliteAssemblies, skipping.
                        Target _GenerateTargetFrameworkMonikerAttribute:
                        Skipping target "_GenerateTargetFrameworkMonikerAttribute" because its outputs are up-to-date.
                        Target CoreCompile:
                                Tool /usr/lib/mono/4.5/mcs.exe execution started with arguments: /noconfig /debug:full /delaysign- /debug+ /keyfile:../ICSharpCode.NRefactory.snk /optimize- /out:obj/Debug/ICSharpCode.NRefactory.dll Analysis/AbiComparer.cs Analysis/TypeGraph.cs Analysis/TypeGraphNode.cs Documentation/DocumentationComment.cs Documentation/GetPotentiallyNestedClassTypeReference.cs Documentation/IDocumentationProvider.cs Editor/IDocument.cs Editor/IDocumentLine.cs Editor/ISegment.cs Editor/ITextAnchor.cs Editor/ITextSource.cs Editor/ReadOnlyDocument.cs Editor/StringBuilderDocument.cs Editor/StringTextSource.cs Editor/TextChangeEventArgs.cs Editor/TextSourceVersionProvider.cs IAnnotatable.cs PatternMatching/BacktrackingInfo.cs PatternMatching/Choice.cs PatternMatching/AnyNode.cs PatternMatching/Backreference.cs PatternMatching/INode.cs PatternMatching/Match.cs PatternMatching/NamedNode.cs PatternMatching/OptionalNode.cs PatternMatching/Repeat.cs PatternMatching/Pattern.cs Documentation/XmlDocumentationProvider.cs Properties/AssemblyInfo.cs Properties/GlobalAssemblyInfo.cs Role.cs Semantics/AmbiguousResolveResult.cs Semantics/ArrayAccessResolveResult.cs Semantics/ArrayCreateResolveResult.cs Semantics/ByReferenceResolveResult.cs Semantics/ConstantResolveResult.cs Semantics/ConversionResolveResult.cs Semantics/SizeOfResolveResult.cs Semantics/ErrorResolveResult.cs Semantics/Conversion.cs Semantics/ForEachResolveResult.cs Semantics/InitializedObjectResolveResult.cs Semantics/InvocationResolveResult.cs Semantics/LocalResolveResult.cs Semantics/MemberResolveResult.cs Semantics/NamedArgumentResolveResult.cs Semantics/NamespaceResolveResult.cs Semantics/OperatorResolveResult.cs Semantics/ResolveResult.cs Semantics/ThisResolveResult.cs Semantics/TypeIsResolveResult.cs Semantics/TypeOfResolveResult.cs Semantics/TypeResolveResult.cs Semantics/UnknownMemberResolveResult.cs TextLocation.cs TypeSystem/Accessibility.cs TypeSystem/AnonymousType.cs TypeSystem/ArrayType.cs TypeSystem/AssemblyQualifiedTypeName.cs TypeSystem/ByReferenceType.cs TypeSystem/ComHelper.cs TypeSystem/DefaultSolutionSnapshot.cs TypeSystem/DomRegion.cs TypeSystem/EntityType.cs TypeSystem/ICodeContext.cs TypeSystem/Implementation/BlobReader.cs TypeSystem/Implementation/DefaultVariable.cs TypeSystem/Implementation/ResolvedAttributeBlob.cs TypeSystem/Implementation/UnresolvedAttributeBlob.cs TypeSystem/Implementation/UnresolvedSecurityDeclarationBlob.cs TypeSystem/ISymbol.cs TypeSystem/TaskType.cs TypeSystem/TypeParameterSubstitution.cs TypeSystem/TypeSystemExtensions.cs TypeSystem/FullTypeName.cs TypeSystem/IAmbience.cs TypeSystem/IAssembly.cs TypeSystem/IAttribute.cs TypeSystem/ICompilation.cs TypeSystem/IConstantValue.cs TypeSystem/IEntity.cs TypeSystem/IEvent.cs TypeSystem/IField.cs TypeSystem/IFreezable.cs TypeSystem/IInterningProvider.cs TypeSystem/IMember.cs TypeSystem/IMethod.cs TypeSystem/Implementation/AbstractFreezable.cs TypeSystem/Implementation/AbstractResolvedEntity.cs TypeSystem/Implementation/AbstractResolvedMember.cs TypeSystem/Implementation/AbstractResolvedTypeParameter.cs TypeSystem/Implementation/AbstractType.cs TypeSystem/Implementation/AbstractUnresolvedEntity.cs TypeSystem/Implementation/AbstractUnresolvedMember.cs TypeSystem/Implementation/AccessorOwnerMemberReference.cs TypeSystem/Implementation/BaseTypeCollector.cs TypeSystem/Implementation/DefaultAssemblyReference.cs TypeSystem/Implementation/DefaultAttribute.cs TypeSystem/Implementation/DefaultMemberReference.cs TypeSystem/Implementation/DefaultParameter.cs TypeSystem/Implementation/DefaultResolvedEvent.cs TypeSystem/Implementation/DefaultResolvedField.cs TypeSystem/Implementation/DefaultResolvedMethod.cs TypeSystem/Implementation/DefaultResolvedProperty.cs TypeSystem/Implementation/DefaultResolvedTypeDefinition.cs TypeSystem/Implementation/DefaultResolvedTypeParameter.cs TypeSystem/Implementation/DefaultUnresolvedAssembly.cs TypeSystem/Implementation/DefaultUnresolvedAttribute.cs TypeSystem/Implementation/DefaultUnresolvedEvent.cs TypeSystem/Implementation/DefaultUnresolvedField.cs TypeSystem/Implementation/DefaultUnresolvedMethod.cs TypeSystem/Implementation/DefaultUnresolvedParameter.cs TypeSystem/Implementation/DefaultUnresolvedProperty.cs TypeSystem/Implementation/DefaultUnresolvedTypeDefinition.cs TypeSystem/Implementation/DefaultUnresolvedTypeParameter.cs TypeSystem/Implementation/DummyTypeParameter.cs TypeSystem/Implementation/ExplicitInterfaceImplementationMemberReference.cs TypeSystem/Implementation/FullNameAndTypeParameterCount.cs TypeSystem/Implementation/GetClassTypeReference.cs TypeSystem/Implementation/GetMembersHelper.cs TypeSystem/Implementation/KnownTypeCache.cs TypeSystem/Implementation/MergedNamespace.cs TypeSystem/Implementation/MinimalCorlib.cs TypeSystem/Implementation/NestedTypeReference.cs TypeSystem/Implementation/SimpleCompilation.cs TypeSystem/Implementation/SimpleConstantValue.cs TypeSystem/Implementation/SimpleInterningProvider.cs TypeSystem/Implementation/SpecializedEvent.cs TypeSystem/Implementation/SpecializedField.cs TypeSystem/Implementation/SpecializedMember.cs TypeSystem/Implementation/SpecializedMethod.cs TypeSystem/Implementation/SpecializedProperty.cs TypeSystem/Implementation/SpecializingMemberReference.cs TypeSystem/Implementation/TypeParameterReference.cs TypeSystem/Implementation/TypeWithElementType.cs TypeSystem/Implementation/UnknownType.cs TypeSystem/Implementation/VoidTypeDefinition.cs TypeSystem/INamedElement.cs TypeSystem/INamespace.cs TypeSystem/InheritanceHelper.cs TypeSystem/IntersectionType.cs TypeSystem/IParameter.cs TypeSystem/IParameterizedMember.cs TypeSystem/IUnresolvedFile.cs TypeSystem/IProjectContent.cs TypeSystem/IProperty.cs TypeSystem/ISolutionSnapshot.cs TypeSystem/ISupportsInterning.cs TypeSystem/IType.cs TypeSystem/ITypeDefinition.cs TypeSystem/ITypeParameter.cs TypeSystem/ITypeReference.cs TypeSystem/KnownTypeReference.cs TypeSystem/NullableType.cs TypeSystem/ParameterizedType.cs TypeSystem/ParameterListComparer.cs TypeSystem/ProjectReference.cs TypeSystem/ReflectionNameParseException.cs TypeSystem/SimpleTypeResolveContext.cs TypeSystem/TopLevelTypeName.cs TypeSystem/TypeKind.cs TypeSystem/TypeVisitor.cs TypeSystem/IVariable.cs TypeSystem/PointerType.cs TypeSystem/ReflectionHelper.cs TypeSystem/SpecialType.cs Utils/7BitEncodedInts.cs Utils/BitVector16.cs Utils/BusyManager.cs Utils/CacheManager.cs Utils/CallbackOnDispose.cs Utils/CSharpPrimitiveCast.cs Utils/EmptyList.cs Utils/ExtensionMethods.cs Utils/FastSerializer.cs Utils/GraphVizGraph.cs Utils/ImmutableStack.cs Utils/KeyComparer.cs Utils/LazyInit.cs Utils/MultiDictionary.cs Utils/Platform.cs Utils/ProjectedList.cs Utils/ReferenceComparer.cs Utils/TreeTraversal.cs TypeSystem/Error.cs Completion/ICompletionData.cs Completion/DisplayFlags.cs Completion/IEntityCompletionData.cs Completion/CompletionCategory.cs Completion/IParameterDataProvider.cs Completion/IVariableCompletionData.cs Documentation/IdStringProvider.cs Documentation/IdStringMemberReference.cs Utils/CompositeFormatStringParser/CompositeFormatStringParser.cs Utils/CompositeFormatStringParser/TextSegment.cs Utils/CompositeFormatStringParser/FormatItem.cs Utils/CompositeFormatStringParser/FormatStringSegmentBase.cs Utils/CompositeFormatStringParser/IFormatStringSegment.cs Utils/CompositeFormatStringParser/IFormatStringError.cs Completion/CompletionExtensionMethods.cs Refactoring/IssueMarker.cs Refactoring/Severity.cs Analysis/SymbolCollector.cs TypeSystem/AssemblyLoader.cs Editor/UnicodeNewline.cs Completion/FrameworkLookup.cs Utils/ComparableList.cs PatternMatching/AnyNodeOrNull.cs Editor/ITextPasteHandler.cs obj/Debug/.NETFramework,Version=v4.0.AssemblyAttribute.cs /target:library /warnaserror- /unsafe- /checked+ /define:"DEBUG;TRACE" /nowarn:1591 /doc:../bin/Debug/ICSharpCode.NRefactory.xml /nostdlib /platform:AnyCPU /reference:/usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll /reference:/usr/lib/mono/gac/System.Xml/4.0.0.0__b77a5c561934e089/System.Xml.dll /reference:/usr/lib/mono/gac/System.Xml.Linq/4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll /reference:/usr/lib/mono/gac/System.Core/4.0.0.0__b77a5c561934e089/System.Core.dll /warn:4
CSC: error CS0518: The predefined type `System.Object' is not defined or imported
CSC: error CS0518: The predefined type `System.ValueType' is not defined or imported
CSC: error CS0518: The predefined type `System.Attribute' is not defined or imported
CSC: error CS0518: The predefined type `System.Int32' is not defined or imported
CSC: error CS0518: The predefined type `System.UInt32' is not defined or imported
CSC: error CS0518: The predefined type `System.Int64' is not defined or imported
CSC: error CS0518: The predefined type `System.UInt64' is not defined or imported
CSC: error CS0518: The predefined type `System.Single' is not defined or imported
CSC: error CS0518: The predefined type `System.Double' is not defined or imported
CSC: error CS0518: The predefined type `System.Char' is not defined or imported
CSC: error CS0518: The predefined type `System.Int16' is not defined or imported
CSC: error CS0518: The predefined type `System.Decimal' is not defined or imported
CSC: error CS0518: The predefined type `System.Boolean' is not defined or imported
CSC: error CS0518: The predefined type `System.SByte' is not defined or imported
CSC: error CS0518: The predefined type `System.Byte' is not defined or imported
CSC: error CS0518: The predefined type `System.UInt16' is not defined or imported
CSC: error CS0518: The predefined type `System.String' is not defined or imported
CSC: error CS0518: The predefined type `System.Enum' is not defined or imported
CSC: error CS0518: The predefined type `System.Delegate' is not defined or imported
CSC: error CS0518: The predefined type `System.MulticastDelegate' is not defined or imported
CSC: error CS0518: The predefined type `System.Void' is not defined or imported
CSC: error CS0518: The predefined type `System.Array' is not defined or imported
CSC: error CS0518: The predefined type `System.Type' is not defined or imported
CSC: error CS0518: The predefined type `System.Collections.IEnumerator' is not defined or imported
CSC: error CS0518: The predefined type `System.Collections.IEnumerable' is not defined or imported
CSC: error CS0518: The predefined type `System.IDisposable' is not defined or imported
CSC: error CS0518: The predefined type `System.IntPtr' is not defined or imported
CSC: error CS0518: The predefined type `System.UIntPtr' is not defined or imported
CSC: error CS0518: The predefined type `System.RuntimeFieldHandle' is not defined or imported
CSC: error CS0518: The predefined type `System.RuntimeTypeHandle' is not defined or imported
CSC: error CS0518: The predefined type `System.Exception' is not defined or imported
                        Task "Csc" execution -- FAILED
                        Done building target "CoreCompile" in project "/tmpfs/ILSpy-For-MacOSX/NRefactory/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj".-- FAILED
                Done building project "/tmpfs/ILSpy-For-MacOSX/NRefactory/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj".-- FAILED
        Task "MSBuild" execution -- FAILED
        Done building target "Build" in project "/tmpfs/ILSpy-For-MacOSX/ILSpyMac.sln".-- FAILED
Done building project "/tmpfs/ILSpy-For-MacOSX/ILSpyMac.sln".-- FAILED

Build FAILED.
Errors:

/tmpfs/ILSpy-For-MacOSX/ILSpyMac.sln (default targets) ->
(Build target) ->
/tmpfs/ILSpy-For-MacOSX/NRefactory/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj (default targets) ->
/usr/lib/mono/xbuild/14.0/bin/Microsoft.CSharp.targets (CoreCompile target) ->

        CSC: error CS0518: The predefined type `System.Object' is not defined or imported
        CSC: error CS0518: The predefined type `System.ValueType' is not defined or imported
        CSC: error CS0518: The predefined type `System.Attribute' is not defined or imported
        CSC: error CS0518: The predefined type `System.Int32' is not defined or imported
        CSC: error CS0518: The predefined type `System.UInt32' is not defined or imported
        CSC: error CS0518: The predefined type `System.Int64' is not defined or imported
        CSC: error CS0518: The predefined type `System.UInt64' is not defined or imported
        CSC: error CS0518: The predefined type `System.Single' is not defined or imported
        CSC: error CS0518: The predefined type `System.Double' is not defined or imported
        CSC: error CS0518: The predefined type `System.Char' is not defined or imported
        CSC: error CS0518: The predefined type `System.Int16' is not defined or imported
        CSC: error CS0518: The predefined type `System.Decimal' is not defined or imported
        CSC: error CS0518: The predefined type `System.Boolean' is not defined or imported
        CSC: error CS0518: The predefined type `System.SByte' is not defined or imported
        CSC: error CS0518: The predefined type `System.Byte' is not defined or imported
        CSC: error CS0518: The predefined type `System.UInt16' is not defined or imported
        CSC: error CS0518: The predefined type `System.String' is not defined or imported
        CSC: error CS0518: The predefined type `System.Enum' is not defined or imported
        CSC: error CS0518: The predefined type `System.Delegate' is not defined or imported
        CSC: error CS0518: The predefined type `System.MulticastDelegate' is not defined or imported
        CSC: error CS0518: The predefined type `System.Void' is not defined or imported
        CSC: error CS0518: The predefined type `System.Array' is not defined or imported
        CSC: error CS0518: The predefined type `System.Type' is not defined or imported
        CSC: error CS0518: The predefined type `System.Collections.IEnumerator' is not defined or imported
        CSC: error CS0518: The predefined type `System.Collections.IEnumerable' is not defined or imported
        CSC: error CS0518: The predefined type `System.IDisposable' is not defined or imported
        CSC: error CS0518: The predefined type `System.IntPtr' is not defined or imported
        CSC: error CS0518: The predefined type `System.UIntPtr' is not defined or imported
        CSC: error CS0518: The predefined type `System.RuntimeFieldHandle' is not defined or imported
        CSC: error CS0518: The predefined type `System.RuntimeTypeHandle' is not defined or imported
        CSC: error CS0518: The predefined type `System.Exception' is not defined or imported

         0 Warning(s)
         31 Error(s)

Time Elapsed 00:00:01.9361750

Can you support just a file

No can only ILSpyMac [options] directory/to/all/your/dll.
Can I just specify a file not a directory?