vault backup: 2023-07-04 14:16:27

07-Other/MAC/安装Mac UE开发环境.md

@@ -62,7 +62,10 @@ https://github.com/trulyspinach/SMCAMDProcessor/releases/tag/0.7.1
 
 ## ATOMIC_VAR_INIT错误
 https://forums.unrealengine.com/t/cannot-build-ue-5-1-1-from-source-on-macos-ventura-13-3-1-xcode-14-3/885545
-macOS 13.4 Xcode 14.3编译UE5.1会报错，解决方法是：
+macOS 13.4 Xcode 14.3编译UE5.1会报错，其原因是：
+>So it seems the error is related to the deprecation of `ATOMIC_VAR_INIT` [since C++20 2](https://en.cppreference.com/w/cpp/atomic/ATOMIC_VAR_INIT). I gather [from this table 3](https://en.wikipedia.org/wiki/Xcode#Xcode_11.0_-_14.x_(since_SwiftUI_framework)_2) that Xcode 14.3 includes a clang patch version bump from 14.0.0 to 14.0.3, and a llvm major version bump from 14.0.0 to 15.0.0. With my limited understanding of clang and llvm, I would guess that llvm 15 compiles at C++20, and therefore throws the build error, whereas the build is successful with Xcode 14.2.
+
+解决方法是：
 - ShaderCompileWorker.target.cs添加下面的代码。
 - UnrealEditor.Target.cs添加下面的代码（去掉bOverrideBuildEnvironment那一行）。
 
@@ -85,5 +88,47 @@ public class YourGameTarget : TargetRules
 }
 ```
 
+我对文件做了一些修改`Engine/Source/Programs/UnrealBuildTool/Platform/Mac/MacToolChain.cs`，错误消失了。
+```c++
+if (CompilerVersionGreaterOrEqual(14, 0, 0)) 
+{ 
+	Arguments.Add("-Wno-deprecated-pragma"); 
+}
 ```
+
+功能齐全：
+```csharp
+protected override void GetCompileArguments_Global(CppCompileEnvironment CompileEnvironment, List<string> Arguments)
+{
+	base.GetCompileArguments_Global(CompileEnvironment, Arguments);
+
+	Arguments.Add("-fasm-blocks");
+
+	if (CompileEnvironment.bEnableOSX109Support)
+	{
+		Arguments.Add("-faligned-new"); // aligned operator new is supported only on macOS 10.14 and above
+	}
+
+	// Pass through architecture and OS info
+	Arguments.Add("" + FormatArchitectureArg(CompileEnvironment.Architecture));
+	Arguments.Add($"-isysroot \"{SDKPath}\"");
+	Arguments.Add("-mmacosx-version-min=" + (CompileEnvironment.bEnableOSX109Support ? "10.9" : Settings.MacOSVersion));
+
+	List<string> FrameworksSearchPaths = new List<string>();
+	foreach (UEBuildFramework Framework in CompileEnvironment.AdditionalFrameworks)
+	{
+		FileReference FrameworkPath = new FileReference(Path.GetFullPath(Framework.Name));
+		if (!FrameworksSearchPaths.Contains(FrameworkPath.Directory.FullName))
+		{
+			Arguments.Add($"-F \"{NormalizeCommandLinePath(FrameworkPath.Directory)}\"");
+			FrameworksSearchPaths.Add(FrameworkPath.Directory.FullName);
+		}
+	}
+
+	
+	if (CompilerVersionGreaterOrEqual(14, 0, 0))
+	{
+		Arguments.Add("-Wno-deprecated-pragma");
+	}
+}
 ```