blocks|key|100637|text|发现"AppDelegate“不是”目标“成员。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100638|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Found out that "AppDelegate" wasn't part of "target" membership.

blocks|key|2636348|text|添加@UIApplicationMain解决了此问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2636349|@UIApplicationMain
class+AppDelegate:+UIResponder,+UIApplicationDelegate+{
...
}|code-block|syntax|javascript|2636350|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Adding @UIApplicationMain fixed the issue.

<pre><code>@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
...
}
</code></pre>

blocks|key|100640|text|请打开您的AppDelegate.swift类并检查是否编写了@UIApplicationMain。如果不是，则将该行代码添加到导入UIKit+"@UIApplicationMain"下的该类中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|100641|同上：@UIApplicationMain类AppDelegate:+UIResponder，UIApplicationDelegate+{+...+}|100642|entityMap^0|5|H|V|I|1U|Q|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

Please Open your <code>AppDelegate.swift</code> class and check if <code>@UIApplicationMain</code> is written or not. If not then add this line of code in this class below the import <code>UIKit "@UIApplicationMain"</code>.

Same like this:
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
...
}

blocks|key|2847865|text|只需在appDelegate中添加以下代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2847866|var+window:+UIWindow?|code-block|syntax|javascript|2847867|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

just add this code in appDelegate 

<pre><code>var window: UIWindow?
</code></pre>

blocks|key|100646|text|我也遇到过同样的问题。下面是我修复它的方法:选择你的项目，然后转到Build，Setting+->+Search+Mach-O+Type+to+->+Bundle。希望它能有所帮助！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100647|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I've been faced with same problem. here is how i fixed it:
Select your Project then go to Build Setting -> Search Mach-O Type Change to -> Bundle
. hope it will help!

blocks|key|100072|text|确保"AppDelegate“是”目标“成员的一部分。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100073|单击+AppDelegate+->+属性检查器+->+检查目标成员资格E211|offset|length|style|BOLD|100074|​|100075|📷|atomic|100076|100077|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/16fa32ab27953763e27ebdf127f1157e.png|imageAlt^0|0|0|2|3|B|F|2|I|5|O|2|R|C|0|0|1|0|0|1|0|1|0|0|0|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]|$D|10|E|11|F|G]|$D|12|E|13|F|G]|$D|14|E|15|F|G]|$D|16|E|17|F|G]|$D|18|E|19|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1A|8|@$D|1B|E|1C|F|G]]|9|@]|A|$]]|$1|J|3|K|5|L|7|1D|8|@$D|1E|E|1F|F|G]]|9|@$D|1G|E|1H|1|1I]]|A|$]]|$1|M|3|I|5|6|7|1J|8|@$D|1K|E|1L|F|G]]|9|@]|A|$]]|$1|N|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U|V|-4]]]]

Make sure "AppDelegate" is part of "target" membership.

Click AppDelegate -> Attribute inspector -> Check Target membership

<a href="https://i.stack.imgur.com/w0fuM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/w0fuM.png" alt="enter image description here"></a>

blocks|key|100664|text|添加@UIApplicationMain以解决此问题。就像它在内部做什么一样，你也可以自己做同样的事情。在这种情况下，您不需要添加@UIApplicationMain。只需创建一个swift文件，将其命名为main，并将以下代码放入其中。它会像预期的那样工作。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|100665|import+UIKit

UIApplicationMain(CommandLine.argc,+
++++UnsafeMutableRawPointer(CommandLine.unsafeArgv).bindMemory(to:+UnsafeMutablePointer<Int8>.self,+capacity:+Int(CommandLine.argc)),+nil,+NSStringFromClass(AppDelegate.self))|code-block|syntax|javascript|100666|entityMap^0|2|I|1T|I|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Add <code>@UIApplicationMain</code> to fix the issue. As well as what it does internally you can do the same by your own. In that case, you don't need to add <code>@UIApplicationMain</code>. Simply create one swift file name it main and put the below code inside it. It will work as expected.

<pre><code>import UIKit

UIApplicationMain(CommandLine.argc, 
 UnsafeMutableRawPointer(CommandLine.unsafeArgv).bindMemory(to: UnsafeMutablePointer&lt;Int8&gt;.self, capacity: Int(CommandLine.argc)), nil, NSStringFromClass(AppDelegate.self))
</code></pre>

blocks|key|100668|text|For+Framework+(动态库)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100669|如果您在构建框架时遇到此错误，请在Build+Settings+>+Mach-O+Type下选择Dynamic+Library。|offset|length|style|BOLD|100670|在Xcode版本11.6+(11E708)上测试|100671|最好的。|100672|entityMap^0|0|H|S|1C|F|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]|$D|R|E|S|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|M|$]]

<h1>For Framework (Dynamic Library)</h1>
If you're facing this error while building a framework, then select the Dynamic Library Under the Build Settings &gt; Mach-O Type.
<h3>Tested on the Xcode Version 11.6 (11E708)</h3>
Best.

blocks|key|2848058|text|在我的例子中，我错过了AppDelegate.swift中的@UIApplicationMain。在class+AppDelegate之前添加它，我的应用程序再次开始构建|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2848059|entityMap^0|B|H|U|I|1E|H|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

In my case, I missed <code>@UIApplicationMain</code> in <code>AppDelegate.swift</code>. Adding it right before <code>class AppDelegate</code>, my app started building again

blocks|key|2848061|text|@main
class+AppDelegate:+UIResponder,+UIApplicationDelegate+{
++...
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2848062|Swift+5|unstyled|offset|length|style|BOLD|2848063|确保在appDelegate类的开头有@main。|2848064|entityMap^0|0|0|7|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|P|8|@$G|Q|H|R|I|J]]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|F|7|T|8|@]|9|@]|A|$]]]|N|$]]

<pre><code>@main
class AppDelegate: UIResponder, UIApplicationDelegate {
 ...
}
</code></pre>
Swift 5
Make sure you have @main at the beginning of your appDelegate class.

blocks|key|100714|text|在我的例子中，@main被评论了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|100715|您的AppDelegate应该是这样的：|100716|@main
class+AppDelegate:+UIResponder,+UIApplicationDelegate+{
++++//
}|code-block|syntax|javascript|100717|entityMap^0|7|5|0|2|B|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

in my case <code>@main</code> was commented .
your <code>AppDelegate</code> should be like this :
<pre><code>@main
class AppDelegate: UIResponder, UIApplicationDelegate {
 //
}
</code></pre>

blocks|key|100719|text|在我的例子中，我删除了我的appDelegate文件:)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100720|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case I accendtly removed my appDelegate file :)

Recently I downloaded Xcode 9 and created one sample iPhone app but the app is not able to build as it shows the following error:

<blockquote>
 ld: entry point (_main) undefined. for architecture x86_64
</blockquote>

I searched on net about same and tried few ways like deleting derived data, restarting Xcode but still not fix the problem.

Anybody has faced similar issue?

ld: entry point (_main) undefined. for architecture x86_64 : Xcode 9

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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最近，我下载了Xcode9并创建了一个示例iPhone应用程序，但该应用程序无法构建，因为它显示了以下错误： % ld:未定义入口点(_main)。对于架构x86_64我在网上搜索了同样的东西，尝试了几种方法，比如删除派生数据，重新启动Xcode，但仍然没有解决这个问题。有谁遇到过类似的问题吗？

问ld:未定义入口点(_main)。对于架构x86_64 :xcode9
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问ld:未定义入口点(_main)。对于架构x86_64 :xcode9
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