Question

我正在关注此处的文档Setting Up for Microsoft C# Development，在此步骤Building the C# vSphere DLLs我在开发人员命令提示符中获得以下内容：

'pdf' => array(
        'enabled' => true,
        'binary' => base_path('vendor/h4cc/wkhtmltopdf-amd64/bin/wkhtmltopdf-amd64'),
        'timeout' => 3600,
        'options' => array(),
        'env'     => array(),
    ),

查看C:\Users\user\Downloads\VMware-vSphereSDK-6.5.0-4571253\SDK\vsphere-ws\dotnet\bin>build.bat 1 file(s) copied. Fixing HttpNfcLeaseInfo type, adding missing leaseState property Generating VimService.cs Microsoft (R) Service Model Metadata Tool [Microsoft (R) Windows (R) Communication Foundation, Version 4.6.1055.0] Copyright (c) Microsoft Corporation. All rights reserved. Generating files... C:\Users\user\Downloads\VMware-vSphereSDK-6.5.0-4571253\SDK\vsphere-ws\dotnet\bin\VimService.cs Compiling original VimService.dll Microsoft (R) Service Model Metadata Tool [Microsoft (R) Windows (R) Communication Foundation, Version 4.6.1055.0] Copyright (c) Microsoft Corporation. All rights reserved. Generating XML serializers... C:\Users\user\Downloads\VMware-vSphereSDK-6.5.0-4571253\SDK\vsphere-ws\dotnet\bin\VimServiceSerializers.cs 1 file(s) copied. Optimizing VimService.cs by stripping serializer hint attributes. Compiling optimized VimService.dll FAILED，看起来它在这一行上失败了：

build.bat

如果我手动运行echo Compiling optimized VimService.dll csc /t:library /out:Vim25Service.dll VimService.cs VimServiceSerializers.cs >nul || goto ERROR，我会收到以下信息：

csc /t:library /out:Vim25Service.dll VimService.cs VimServiceSerializers.cs

我也试过VS2017：

C:\Users\user\Downloads\VMware-vSphereSDK-6.5.0-4571253\SDK\vsphere-ws\dotnet\bin>csc /t:library /out:Vim25Service.dll VimService.cs VimServiceSerializers.cs
Microsoft (R) Visual C# Compiler version 1.3.1.60616
Copyright (C) Microsoft Corporation. All rights reserved.

VimServiceSerializers.cs(32548,98): error CS8078: An expression is too long or complex to compile

要注意的行为，C:\Users\user\Downloads\VMware-vSphereSDK-6.5.0-4571253\SDK\vsphere-ws\dotnet\bin>csc /t:library /out:Vim25Service.dll VimService.cs VimServiceSerializers.cs Microsoft (R) Visual C# Compiler version 2.0.0.61213 Copyright (C) Microsoft Corporation. All rights reserved. VimServiceSerializers.cs(31372,109): error CS8078: An expression is too long or complex to compile行和列每次都不同。

谷歌搜索错误CS8078，发现编译器耗尽堆栈空间是一个问题。 https://stackoverflow.com/a/8160109/6656422

如何成功编译VmWare的代码？

Answer 1

我明白了。序列化程序CS文件具有长时间不间断的if ... else if ... else if ...子句。编译器必须立即处理整个if / else表达式，这会导致它耗尽堆栈空间。

幸运的是，这些else if中的每个分支都以return语句终止。这使得所有else if s在功能上等同于独立的if语句，这些语句是独立解析的。

在多个地方进行此替换后，文件将进行编译。这是我修改过的VimServiceSerializers.cs：https://1drv.ms/u/s!Al6mzY0CpY7EnHqBRDyg-z0ctrjk

Answer 2

将if ... else拆分为单独的if语句给出的答案是一种解决方案。另一个选择是检查用于编译代码的C＃编译器的版本。我已经看到，与.NET 4.5、4.6捆绑在一起的csc.exe可以编译这样的代码而不会产生任何错误。但是Roslyn .NET编译器无法编译此类代码并生成CS8078错误。因此，如果您不想修改代码，另一个选择是更改C＃编译器。例如下面的csc.exe可以编译这样的代码-

 C:\Windows\Microsoft.NET\Framework\v4.0.30319>csc.exe /version
Microsoft (R) Visual C# Compiler version 4.6.1055.0
for Microsoft (R) .NET Framework 4.5
Copyright (C) Microsoft Corporation. All rights reserved.

使用CS8078构建vSphere DLL失败：表达式太长或太复杂而无法编译

2 个答案: