在Visual Studio 2010中定位x64平台时，F#项目引用不起作用 [英] F# project references not working when targeting x64 platform in Visual Studio 2010

问题描述

在同一个解决方案中，我有一个依赖于C#类库项目的F#库项目.本质上，在F#代码中，我执行open MyLib(其中MyLib是C#项目的名称)，并访问在C#项目中定义的一些代码.

I have an F# library project that depends on a C# class library project, both in the same solution. Essentially in the F# code, I do open MyLib (where MyLib is the name of the C# project), and access some code defined in the C# project.

我进行编译，并且两个项目的构建都没有错误或警告.然后，如果我在两个项目上都将目标从Any CPU更改为x64，则C#项目仍然可以正常运行，但是F#项目无法构建，并显示错误消息，提示我找不到模块MyLib.重建解决方案无济于事.删除所有bin og obj文件夹也无济于事.如果我将平台目标改回Any CPU或x86，一切都会再次编译.

I compile and both projects build without errors or warnings. If I then change the target from Any CPU to x64 on both projects, the C# project still builds fine, but the F# project fails to build with error messages that tell me that it can't find the module MyLib. A rebuild of the solution doesn't help. Removing all bin og obj folders also doesn't help. If I change the platform target back to Any CPU or to x86 everything compiles again.

我在一个玩具解决方案中复制了这个代码，其中包含两个仅包含琐碎代码的小项目，所以我知道它与我的特定代码无关.

I have reproduced this in a toy solution with two small projects containing only trivial code, so I know it's not related to my specific code.

还有其他人经历过吗?有任何已知的解决方法吗?

Anyone else experienced this? Any known workarounds?

保持健康 -h-

更新:根据要求，以下是我的确切复制步骤.

Update: On request, here are my exact reproduction steps.

1. 在Visual Studio 2010中创建一个新的空解决方案
2. 在解决方案中添加一个新的C#类库项目，称为MyLib
3. 向Class1类添加静态方法int GetAnswer() { return 42; }
4. 将新的F#库项目添加到解决方案中，称为MyOtherLib
5. 将F#库项目中的引用添加到C#类库项目中

6. 将此代码添加到module Module1行下面的Module1.fs中:

1. Create a new empty solution in Visual Studio 2010
2. Add a new C# class library project to the solution, call it MyLib
3. Add a static method int GetAnswer() { return 42; } to the Class1 class
4. Add a new F# library project to the solution, call it MyOtherLib
5. Add a reference from the F# library project to the C# class library project

6. Add this code to Module1.fs, below the module Module1 line:

打开MyLib

让答案= Class1.GetAnswer()

let answer = Class1.GetAnswer()

编译.一切都应该整洁.

Compile. Everything should build cleanly.

更新2:刚刚使用Visual Studio 2010 Beta 1对其进行了测试，其行为是相同的.

UPDATE 2: Just tested it with Visual Studio 2010 Beta 1 and the behavior is the same.

推荐答案

好，所以我终于得到了一些

OK, so I finally got some response from Microsoft.

事实证明，这是一个错误，显然已在下一版F#中修复.

It turns out to be a bug that's apparently been fixed in the next version of F#.

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