Found an unexpected Mach-O header code: 0x72613c21 in Xcode 7

Take a look at this **Apple** documentation
[Embedding Frameworks in An App][1] go to the section **Embedded Static Libraries** they explain this error like this:

> This is caused by placing a static library in a bundle structure that looks like a framework; this packaging is sometimes referred to by third party framework developers as a static framework. Since the binary in these situations is a static library, apps cannot embed it in the app bundle.

They also provide a way to fixed:

> you can solve this error by identifying the static framework and removing it from the Embedded Binaries section.

You accomplish this by following the instructions in [Inspecting A Binary's Linkage][2]




[1]:

[To see links please register here]

[2]:

[To see links please register here]

Remove them from `Embedded Binaries` and add them to `Linked Frameworks and Libaries`, then Archive again and upload to store.

Check two things for every framework:

1. The Mach-O type of the framework (in Build Settings of the framework target)

[![Mach-O][1]][1]

2. Whether you copy the framework by putting it in Build Phases -> Embed Frameworks (or Copy Bundle Resources as mentioned by a. brooks hollar)

[![Embed frameworks][2]][2]

If the Mach-O type of the framework is "static library", it should *not* be put in embed frameworks; if the Mach-O type is "dynamic library", it *should* be put in embed frameworks.

In my case it was SocketRocket I added manually which has both a static library target and a dynamic library target with the same framework name. After deleting the static library target and only embed the dynamic library framework, the problem disappears.

---

*Note*:

If you don't have access to the source project, you can manually check if it's a dynamic or static framework using this approach:

[To see links please register here]

[1]:

[2]:

For me, I had Fabric binaries in my Carthage `/usr/local/bin/carthage copy-frameworks` run script.

After removing those, it fixed the issue.

I'm using Xcode `Version 9.4.1 (9F2000)`

My way of fixing this was to get back to `Fabric/Crashlytics` installation via Cocoapods instead of fancy Carthage setup (which appeared buggy).

Given the amount of time I've poured into finding this problem, it was caused by Cocoapods. I was working on a Workspace that had both iOS apps and a command line tool to kick off some pipelines and stuff. My file looked like this:

```
target 'AppPipe' do
platform :osx, '10.14'
project 'AppPipe/AppPipe.xcodeproj'
pod 'Yams'

post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['MACH_O_TYPE'] = 'staticlib'
end
end
end
end

```
I thought the `pods_install` hook was local to the scope I was writing it in, but it wasn't! It actually turned all of my target's configs into staticlibs! This fixed it:
```
target 'AppPipe' do
platform :osx, '10.14'
project 'AppPipe/AppPipe.xcodeproj'
pod 'Yams'
end

post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
# Only AppPipe always gets staticlib
if target.name == 'AppPipe'
config.build_settings['MACH_O_TYPE'] = 'staticlib'
end
end
end
end
```

I don't know why but somehow pods appeared to become an **embedded binary**. So I had to remove it, pod install once more, and the issue disappeared.

[![enter image description here][1]][1]


[1]:

On Xcode 11 you need to change it to `Do Not Embed` in the Frameworks, Libraries, and Embedded Content.

In XCode 11, click on the project file, select your target, then on General tab expand Frameworks, Libraries, and Embedded Content, change Embed & Sign to Do Not Embed.

Check and looking for duplicate frameworks and Libraries in **Link Binary With Libraries** and **Embed Frameworks** in Build Phases tab of your project.

Only should be in one side ...

If you have an Xcode project for a static framework, your test target must have "Bundle" value for MACH_O_TYPE build setting:

[![enter image description here][1]][1]


[1]: