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前言
先了解下概念，ILC是AOT编译器。ILC有很多参数，多达上百个。为了方便这些参数进行脚本化的输出，rsp文件即是做这种工作的。
参考资料:
参数
通过nuget下载runtime.win-x64.Microsoft.DotNet.ILCompiler，在目录：
C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\tools这里的版本是：8.0.1，下即可看到ilc.exe，它的部分命令如下：
-o:输出的文件-r:编译时候需要引用的文件--targetos:win(平台)--targetarch:x64(指令集)--dehydrate(压缩运行时数据结构)-O:启用代码优化-g:生成调试细腻--initassembly:包含库初始化器的程序集--directpinvoke:平台调用（P/Invoke）相关的.NET Native编译器的选项--feature:特性，一般类似于System.StartupHookProvider.IsSupported=false--runtimeknob:--stacktracedata:持在运行时生成堆栈跟踪字符串--scanreflection:扫描IL以查找反射模式--win32resourcemodule:资源文件模块比如ConsoleApp17--nowarn:禁用特定的警告消息，比如:"1701;1702;IL2121;1701;1702"--singlewarn:每个程序集生成单个AOT/修剪警告--nosinglewarnassembly:扩展给定程序集的AOT/修剪警告--resilient:忽略未解析的类型、方法和程序集,默认为false--generateunmanagedentrypoints:给定的程序集生成非托管入口点
例子
简单的例子：
private static void Main(string[] args){Console.WriteLine("你好，世界！！");Console.ReadLine();}
csproj文件添加如下：
<PublishAot>true</PublishAot>csproj文件所在运行命令：
dotnet publish -r win-x64 -c release在目录obj\release\net8.0\win-x64\native下有rsp以及obj文件。
ConsoleApp17.ilc.rsp是ILC的编译文件，link.rsp是C++ bootstrap的链接文件。ConsoleApp17.obj则是ILC生成的目标文件。ConsoleApp17.ilc.rsp文件如下:
obj\release\net8.0\win-x64\ConsoleApp17.dll-o:ConsoleApp17.obj-r:C:\Users\Administrator\.nuget\packages\microsoft.netcore.app.runtime.win-x64\8.0.1\runtimes\win-x64\lib\net8.0\WindowsBase.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\System.Private.CoreLib.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\System.Private.DisabledReflection.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\System.Private.Reflection.Execution.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\System.Private.StackTraceMetadata.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\System.Private.TypeLoader.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\Microsoft.CSharp.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\Microsoft.VisualBasic.Core.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\Microsoft.VisualBasic.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\Microsoft.Win32.Primitives.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\Microsoft.Win32.Registry.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\mscorlib.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\netstandard.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.AppContext.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Buffers.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Collections.Concurrent.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Collections.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Collections.Immutable.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Collections.NonGeneric.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Collections.Specialized.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.ComponentModel.Annotations.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.ComponentModel.DataAnnotations.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.ComponentModel.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.ComponentModel.EventBasedAsync.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.ComponentModel.Primitives.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.ComponentModel.TypeConverter.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Configuration.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Console.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Core.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Data.Common.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Data.DataSetExtensions.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Data.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.Contracts.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.Debug.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.DiagnosticSource.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.FileVersionInfo.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.Process.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.StackTrace.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.TextWriterTraceListener.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.Tools.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.TraceSource.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Diagnostics.Tracing.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Drawing.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Drawing.Primitives.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Dynamic.Runtime.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Formats.Asn1.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Formats.Tar.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Globalization.Calendars.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Globalization.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Globalization.Extensions.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.Compression.Brotli.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.Compression.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.Compression.FileSystem.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.Compression.ZipFile.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.FileSystem.AccessControl.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.FileSystem.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.FileSystem.DriveInfo.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.FileSystem.Primitives.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.FileSystem.Watcher.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.IsolatedStorage.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.MemoryMappedFiles.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.Pipes.AccessControl.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.Pipes.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.IO.UnmanagedMemoryStream.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Linq.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Linq.Expressions.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Linq.Parallel.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Linq.Queryable.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Memory.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Net.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Net.Http.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Net.Http.Json.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Net.HttpListener.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\System.Net.Mail.dll-r:C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\framework\S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以上解释，可以对照上面命令小节。
此时就可以通过ilc.exe以AOT的模式，把CosnoleApp17.dll编译成win的目标文件obj。这里特别需要注意版本号，不同.net版本号编译会出错。比如我这里的ilc.exe是8.01的版本，rsp里面的-r命令引用的必须是8.0.1的包。
ilc.exe @ConsoleApp17.ilc.rsp注意这个@符号。然后在当前目录下就可以看到ConsoleApp17.obj文件了。这是ILC生成的目标文件，这个目标文件不能直接运行，所以需要通过link.exe链接下。
链接
通过-o:ConsoleApp17.obj生成的obj文件，是不能直接运行的，所以这里需要链接下。打开vs命令行，看下link.exe地址：
E:\Visual Studio IDE>where linkE:\Visual Studio IDE\VC\Tools\MSVC\14.39.33519\bin\Hostx86\x86\link.exe
注意它这个链接器目录与C++引导文件bootstrap(关于bootstrap参考:Net8的AOT引导程序BootStrap)的链接器用的是同一个。把这个目录添加到系统环境变量path里面去。打开上面的link.rsp看下：
"obj\release\net8.0\win-x64\native\ConsoleApp17.obj"/OUT:"bin\release\net8.0\win-x64\native\ConsoleApp17.exe"/LIBPATH:"E:\Visual Studio IDE\VC\Tools\MSVC\14.39.33519\ATLMFC\lib\x64"/LIBPATH:"E:\Visual Studio IDE\VC\Tools\MSVC\14.39.33519\lib\x64"/LIBPATH:"C:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\lib\um\x64"/LIBPATH:"D:\Windows Kits\10\lib\10.0.22621.0\ucrt\x64"/LIBPATH:"D:\Windows Kits\10\\lib\10.0.22621.0\\um\x64""C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\bootstrapper.obj""C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\Runtime.WorkstationGC.lib""C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\eventpipe-disabled.lib""C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\Runtime.VxsortEnabled.lib""C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\System.Globalization.Native.Aot.lib""C:\Users\Administrator\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\8.0.1\sdk\System.IO.Compression.Native.Aot.lib""advapi32.lib""bcrypt.lib""crypt32.lib""iphlpapi.lib""kernel32.lib""mswsock.lib""ncrypt.lib""normaliz.lib""ntdll.lib""ole32.lib""oleaut32.lib""secur32.lib""user32.lib""version.lib""ws2_32.lib"/NOLOGO /MANIFEST:NO/DEBUG/INCREMENTAL:NO/SUBSYSTEM:CONSOLE/ENTRY:wmainCRTStartup /NOEXP /NOIMPLIB/NATVIS:"C:\Users\Administrator\.nuget\packages\microsoft.dotnet.ilcompiler\8.0.1\build\NativeAOT.natvis"/NODEFAULTLIB:libucrt.lib/DEFAULTLIB:ucrt.lib/OPT:REF/OPT:ICF
/OUT参数即是指定输出的exe目录，这里可以自己修改，这里注意这个目录一定要存在。然后链接下。
link @link.rsp同样需要注意它这个前面的@符号。这样就生成了可执行的二进制ConsoleApp17.exe文件。
结尾
这里需要两个注意点，一即是版本号的对应，二即是链接输出(//OUT)的目录。总体而言，.NET里面的AOT融合了C#和C++两个语言的特性，同时回归偏向于C++，即目标文件和链接可执行文件这一套。这里面的链接器(win/linux/macos各一套)是不开源的，其它全部开源。
往期精彩回顾
