将第三方 C 库导入 swift 导致错误“Include of non-modular header inside framework module" [英] Import third party C library into swift causes error "Include of non-modular header inside framework module"

问题描述

这个问题是

感谢任何帮助，提前感谢您！

解决方案

我对混合语言框架从来没有 100% 确定.但是像这样的错误会在 Swift 项目中发生:

• 由于您不能在框架中使用桥接头，
• 你 #import 在 Foo-Framework.h 中添加一个 C 头文件来公开它，以便 Swift 代码，以及
• 标头本身并未对目标标记为公开".

非模块化"似乎表示不是已发布模块接口的一部分".至少对于 Swift--C 混合，你只能通过公开 C 头文件来组合两者；没有办法在那里导入私有头文件，这很奇怪.

试一试:由于您显然是在非 Swift 代码中导入文件，请尝试在您的 Xcode 项目中找到 export.h 头文件，打开文件检查器 (⌘⌥1)，并确保框架目标中的公众可见性:

This question is a continuation of a previous one I'm currently migrating this (https://github.com/emilwojtaszek/leveldb-swift) library from swift 2 to swift 3/4. Here is the link to my fork https://github.com/lu4/leveldb-swift/tree/MigrationFromSwift2ToSwift3 (please note that the target branch is MigrationFromSwift2ToSwift3)

I was able to resolve (with many thanks to @Ruslan Serebriakov) all of the issues with initial code base and check that the code is running.

However after trying to update LevelDB C code to latest master I got new type of error which I don't understand how to resolve:

Include of non-modular header inside framework module 'LevelDB.c': '/Path/to/Project/leveldb-swift-migration/vendor/leveldb/include/leveldb/export.h'

I've did some research on the internet but the issues described there seem non-related with one I've stumbled on. Here is an image of the issue

Any help is appreciated, thank you in advance!

解决方案

I'm never 100% certain with mixed language frameworks. But an error like this happens in Swift projects when:

• since you cannot use a Bridging Header in frameworks,
• you #import a C header in the Foo-Framework.h to expose it so the Swift code, and
• the header is not itself marked "Public" to the target.

"Non-modular" seems to indicate "not part of the published module interface". At least with Swift--C mixes, you can only combine both through making the C headers public; no way to import private header files there, which is weird.

Give it a shot: Since you are obviously importing the file in non-Swift code, try to locate the export.h header file in your Xcode project, open the File inspector (⌘⌥1), and ensure public visibility in the framework target:

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