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问题:
I downloaded a project from GitHub, then pod the following files, some of which are written by OBJ-C and I used a bridge header.
pod ‘SnapKit’ pod ‘MJRefresh’ pod ‘Alamofire’ pod ‘Kingfisher’ pod ‘MBProgressHUD’ pod ‘pop’ pod ‘EVReflection’ pod ‘StreamingKit’ pod ‘iCarousel’ pod ‘ReflectionView’
When I run the project with Xcode 9.0 beta 2, but unfortunately the error log as follows :
error: failed to emit precompiled header '/var/folders/kd/4gh0_kxx3jx4thjb_sssmmcw0000gn/T/EvoRadio-Bridging-Header-97bd5f.pch' for bridging header '/Users/ringo/Downloads/EvoRadio-master/EvoRadio/Resources/EvoRadio-Bridging-Header.h'
I have googled, but no such issue.The error means it needs a PCH file? This is my .pch header configuration: 
It can't solve it.
How to make it?
回答1:
I also got exact same issue (Xcode9 beta 6) after I added cocoa pods for Encrypted Core Data.
This is my PodFile:
# Uncomment the next line to define a global platform for your project platform :ios, '9.0' pod 'EncryptedCoreData', :git => 'https://github.com/project-imas/encrypted-core-data.git' target 'Root' do # Comment the next line if you're not using Swift and don't want to use dynamic frameworks use_frameworks! # Pods for Root target 'RootTests' do inherit! :search_paths # Pods for testing end target 'RootUITests' do inherit! :search_paths # Pods for testing end end
Solution:
1 I added $(inherited) non-recursive to Search Path -> Header Search Paths
2 Then added ${PODS_ROOT} recursive to Search Path -> User Header Search Paths
Both the above in my projects' target build settings.
Please have a look at these SO answers:
1 Inherit Header Search Paths
2 Inherit User Search Paths
回答2:
Make sure you're opening the proper project workspace, otherwise, the Podfile may not have all the resources it needs to compile.
I saw this same error on a project that had been working fine previously.
I discovered that I had accidentally opened the ProjectName.xcodeproj file rather than the ProjectName.xcworkspace file. Opened the xcworkspace file and presto, project was working again!
回答3:
You can try this solution. I have solved the same problem by this way.
- First click on the logo
- Then Click 'Edit Scheme':
- Now, under the build tab, check 'Find implicit dependencies':
Then make a clean and build again.
回答4:
For me, this problem occurred when I added new build configuration and scheme to the existing project.
The solution was to run pod install on newly created scheme. After that, project was built successfully.
回答5:
In my case I had the same compiler error with additional errors like "Unknown type" in one of my project files, So I just added this to the problematic file, and it solved it instantly.
#import
It can't solve it.