我有一个 msbuild，我用它来构建一个用于 nuget 分发的项目。它构建了我的程序集的 .net 3.5、.net 4.0 和 .net 4.5 目标版本，以便于打包。在 Windows 上，这一直很好用，但现在我使用 xbuild 在单声道上，除了 .NET 3.5 目标构建之外，一切正常。
我收到一个错误，例如
/Users/akropp/Projects/code/ParsecClone/combinator.msbuild.proj (default targets) ->
(Build target) ->
/Users/akropp/Projects/code/ParsecClone/Combinator/Combinator.fsproj (default targets) ->
/Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/4.0/Microsoft.FSharp.Targets (CoreCompile target) ->
: error FS0219: The referenced or default base CLI library 'mscorlib' is binary-incompatible with the referenced F# core library '/Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/gac/FSharp.Core/4.3.0.0__b03f5f7f11d50a3a/FSharp.Core.dll'. Consider recompiling the library or making an explicit reference to a version of this library that matches the CLI version you are using.
: error FS0218: Unable to read assembly '/Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/gac/FSharp.Core/4.3.0.0__b03f5f7f11d50a3a/FSharp.Core.dll'
0 Warning(s)
2 Error(s)
不确定我缺少什么，因为该程序集对于所有其他目标都是可读的。
可以肯定的是，该文件确实存在
>ls /Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/gac/FSharp.Core/4.3.0.0__b03f5f7f11d50a3a/FSharp.Core.*
-rwxr-xr-x 1 root admin 1104896 Nov 14 15:14 /Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/gac/FSharp.Core/4.3.0.0__b03f5f7f11d50a3a/FSharp.Core.dll*
-rwxr-xr-x 1 root admin 353617 Nov 14 15:18 /Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/gac/FSharp.Core/4.3.0.0__b03f5f7f11d50a3a/FSharp.Core.optdata*
-rwxr-xr-x 1 root admin 488574 Nov 14 15:18 /Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/gac/FSharp.Core/4.3.0.0__b03f5f7f11d50a3a/FSharp.Core.sigdata*
-rwxr-xr-x 1 root admin 592077 Nov 14 15:18 /Library/Frameworks/Mono.framework/Versions/3.2.5/lib/mono/gac/FSharp.Core/4.3.0.0__b03f5f7f11d50a3a/FSharp.Core.xml*
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编辑：
有趣的是，我实际上在 Xamarin Studio 中将我的项目定位到 .NET 3.5 时遇到了同样的错误。我不确定这是否是一个错误，或者是否有其他东西发生了变化，这不应该首先起作用。