我有一条我不明白的错误信息。我在www.swift.org上下载了swift 工具链 4.0.3，因为我收到一条错误消息 “Swift 4.2 编译器无法导入使用 Swift 4.0.3 编译的模块:”
现在，它给我一个不同的信息:
CompileSwiftSources normal arm64 com.apple.xcode.tools.swift.compiler (in target: CameraDemo)
cd /Users/OlostA/Desktop/Git/r-d/CamBox
export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.0.sdk
export TOOLCHAINS="org.swift.40320171205a "
/Library/Developer/Toolchains/swift-4.0.3-RELEASE.xctoolchain/usr/bin/swiftc -incremental -module-name CameraDemo -Onone -enable-batch-mode -enforce-exclusivity=checked -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.0.sdk -target arm64-apple-ios9.3 -g -module-cache-path /Users/OlostA/Library/Developer/Xcode/DerivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Index/DataStore -swift-version 4 -I /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos -F /Users/OlostA/Desktop/Git/r-d/framework/iphonesimulator -F . -F CameraDemo -F YI360Demo -F . -F CameraDemo -F YI360Demo -F . -F CameraDemo -F YI360Demo -F /Users/OlostA/Desktop/Git/r-d/CamBox/YICamera.framework -F /Users/OlostA/Desktop/Git/r-d/CamBox/SwiftyJSON.framework -F /Users/OlostA/Desktop/Git/r-d/CamBox/CocoaAsyncSocket.framework -F . -F CameraDemo -F YI360Demo -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos/CocoaAsyncSocket.framework -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos/YICamera.framework -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos/CameraDemo.app -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos/CameraDemo.swiftmodule -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos/CameraDemo.app/Frameworks -F /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos/CameraDemo.app/_CodeSignature -F /Users/OlostA/Desktop/Git/r-d/CamBox -c -j4 /Users/OlostA/Desktop/Git/r-d/CamBox/CameraDemo/ViewController.swift /Users/OlostA/Desktop/Git/r-d/CamBox/CameraDemo/AppDelegate.swift -output-file-map /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/Objects-normal/arm64/CameraDemo-OutputFileMap.json -parseable-output -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/Objects-normal/arm64/CameraDemo.swiftmodule -Xcc -I/Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/CameraDemo-generated-files.hmap -Xcc -I/Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/CameraDemo-own-target-headers.hmap -Xcc -I/Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/CameraDemo-all-target-headers.hmap -Xcc -iquote -Xcc /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/CameraDemo-project-headers.hmap -Xcc -I/Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Products/Debug-iphoneos/include -Xcc -I/Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/DerivedSources/arm64 -Xcc -I/Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/DerivedSources -Xcc -DDEBUG=1 -emit-objc-header -emit-objc-header-path /Users/OlostA/Library/Developer/Xcode/DerivedData/CameraDemo-atqalgbmsahmkqezdvsdizmgxtek/Build/Intermediates.noindex/CameraDemo.build/Debug-iphoneos/CameraDemo.build/Objects-normal/arm64/CameraDemo-Swift.h -Xcc -working-directory/Users/OlostA/Desktop/Git/r-d/CamBox
<unknown>:0: error: unknown argument: '-enable-batch-mode'
Command CompileSwiftSources failed with a nonzero exit code
可能我必须删除那些参数，但我不知道去哪里搜索...
你有什么想法吗？
最佳答案
TLDR
您无法解决此问题。使用 Xcode 9 或将您的代码库更新到 Swift 5。
完整答案:
我在使用带有 Swift 4.0.3 工具链的 Xcode 10 构建带有静态库的项目时遇到了同样的错误。
这里的问题是这样的:因为Xcode 10运行在Swift 4.2上，所以它针对这个特定的Swift版本编写了一个编译命令。具体来说，它添加了 -enable-batch-mode 标志，优化了构建过程。如果您手动删除标志(例如，将整个命令粘贴到终端应用程序)，它应该会成功。
当你更改工具链时，Xcode 本身不够聪明，无法理解，4.0.3 中没有 -enable-batch-mode 这样的东西。
现在，您可以禁用批处理模式，它应该可以解决问题，对吗？你在 Build Settings 中进行，通过添加新的用户定义设置，SWIFT_ENABLE_BATCH_MODE，值为 NO。
但是猜猜，会发生什么？另一个未知标志。
<unknown>:0: error: unknown argument: '-disable-batch-mode'
Command CompileSwiftSources failed with a nonzero exit code
相关问题:
关于iOS:<未知>:0:错误:未知参数: '-enable-batch-mode' 命令 CompileSwiftSources 失败，退出代码非零，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52988852/