Swift 4.0 报错No such module 'libxmlKanna'，手动装Kanna未解决求帮助

Hey there, I’ve wrestled with this exact error back when working with Swift 4.0 and Kanna—let’s break down actionable fixes that should get you up and running:

• Confirm you’re using a Swift 4.0-compatible Kanna version
  Not all Kanna releases work with Swift 4.0. Grab the source code from the repo’s Swift 4.x tagged releases (look for versions explicitly noted to support Swift 4.0). When adding files to your project, make sure you include:

  • All files in the Sources/Kanna folder
  • The entire Sources/libxml2 folder, including the critical module.modulemap file—missing this is the #1 cause of "module not found" errors here.

• Tweak your target’s build settings
  Head to your project target → Build Settings and adjust these key settings:

  1. Header Search Paths: Add the relative path to your libxml2 folder (e.g., $(SRCROOT)/Kanna/Sources/libxml2) and set it to recursive.
  2. Other Linker Flags: Add -lxml2 to ensure the linker connects to the libxml2 library.
  3. Enable Modules (C and Objective-C): Ensure this is set to Yes under the Apple Clang - Language section.

• Clean Xcode’s cache and rebuild
  Xcode’s cached data often causes weird module issues. Follow these steps in order:

  1. Go to Product → Clean Build Folder (hold the Option key to reveal this option if you only see "Clean")
  2. Quit Xcode entirely
  3. Delete the DerivedData folder (find it via Xcode → Preferences → Locations → DerivedData)
  4. Reopen your project and build again.

• Check for naming conflicts
  Make sure there are no other files, frameworks, or custom modules in your project named Kanna or libxmlKanna—Xcode might be picking up a conflicting module instead of the one you added.

• Try integrating Kanna as a subproject
  If manual file addition isn’t working, drag the Kanna.xcodeproj from the downloaded source into your project’s navigator. Then:

  1. Go to your target → General → Embedded Binaries, click the + button and select Kanna.framework from the Kanna subproject.
  2. Navigate to Build Phases → Link Binary With Libraries and confirm Kanna.framework is listed.

内容的提问来源于stack exchange，提问作者Steven Gardner