帶有Swift Cocoa框架的macOS命令行工具：未加載庫

Question

嘗試運行目標時拋出以下錯誤：

dyld: Library not loaded: @rpath/libswiftCore.dylib
  Referenced from: x/Xcode/DerivedData/x/Build/Products/Debug/PriorityQueue.framework/Versions/A/PriorityQueue
  Reason: image not found

我的目標是用Swift編寫的命令行工具（macOS）。 我正在使用用Swift編寫的Cocoa Framework（PriorityQueue）。 當我在Framework上將EMBEDDED_CONTENT_CONTAINS_SWIFT設置為YES時，目標將運行以下警告：

objc[99144]: Class _TtC10Foundation15NSSimpleCString is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftFoundation.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtC10Foundation16NSConstantString is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftFoundation.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtC10Foundation15NSFastGenerator is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftFoundation.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCE10FoundationCSo12NSDictionary9Generator is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftFoundation.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs18_EmptyArrayStorage is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs24_ContiguousArrayStorage1 is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs36_NativeSetStorageKeyNSEnumeratorBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs26_NativeSetStorageOwnerBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs18_CocoaSetGenerator is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs43_NativeDictionaryStorageKeyNSEnumeratorBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs33_NativeDictionaryStorageOwnerBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs25_CocoaDictionaryGenerator is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs17NonObjectiveCBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs17_stdlib_AtomicInt is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs19_SwiftNativeNSArray is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs24_SwiftNativeNSDictionary is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs17_SwiftNativeNSSet is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs24_SwiftNativeNSEnumerator is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs31_stdlib_ReturnAutoreleasedDummy is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs20_SwiftNativeNSString is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs19_NSContiguousString is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs40_SwiftNativeNSArrayWithContiguousStorage is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs21_SwiftDeferredNSArray is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs27_ContiguousArrayStorageBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _TtCSs13VaListBuilder is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class SwiftObject is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _SwiftNativeNSArrayBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _SwiftNativeNSDictionaryBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _SwiftNativeNSSetBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _SwiftNativeNSStringBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.
objc[99144]: Class _SwiftNativeNSEnumeratorBase is implemented in both x/PriorityQueue.framework/Versions/A/Frameworks/libswiftCore.dylib and x/MyTargetName. One of the two will be used. Which one is undefined.

然后崩潰（可能是無關的）：

MyTargetName[99144:2157492] *** NSForwarding: warning: object 0x1014346a0 of class 'Swift._NSContiguousString' does not implement methodSignatureForSelector: -- trouble ahead
Unrecognized selector -[Swift._NSContiguousString fileSystemRepresentation]

這是Xcode應該報告的問題，還是我錯過了設置？

Answer 1

Swift Package Manager設置了以下內容，它在另一個項目中為我解決了這個問題：

SWIFT_FORCE_DYNAMIC_LINK_STDLIB = YES
SWIFT_FORCE_STATIC_LINK_STDLIB = NO

請注意，搜索路徑設置為：

LD_RUNPATH_SEARCH_PATHS = $(TOOLCHAIN_DIR)/usr/lib/swift/macosx @executable_path

Answer 2

在您的“命令行工具”目標..設置以下...

LD_RUNPATH_SEARCH_PATHS = @executable_path

（或者Xcode稱之為“ Runtime Search Paths ”）設置這個， @rpath ， 實質上是說......“嘿，看看'工具'運行的任何文件夾”對於可動態加載的庫。 （在這種情況下，它將是您的build文件夾。

其它有用的@rpath組合涉及到可執行類似的相對路徑（其也可以是庫或框架二進制的，在某些情況下），經由@loader_path 。 如果說的lib是一個框架內捆綁的。它可能需要LD_RUNPATH_SEARCH_PATHS的@loader_path/Frameworks等。

Answer 3

以上對我有用。 兩個用戶構建標志，然后在運行時搜索路徑中設置以下內容。

LD_RUNPATH_SEARCH_PATHS = $(TOOLCHAIN_DIR)/usr/lib/swift/macosx @executable_path