尝试运行目标时引发以下错误：
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
我的目标是用Swift编写的命令行工具（macOS）。我使用的是用Swift编写的Cocoa框架（PriorityQueue）。当我在Framework上将EMBEDDED_CONTENT_CONTAINS_SWIFT设置为YES时，目标运行时会出现以下警告：
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.
然后崩溃（可能无关）：
MyTargetName[99144:2157492] *** NSForwarding: warning: object 0x1014346a0 of class 'Swift._NSContiguousString' does not implement methodSignatureForSelector: -- trouble ahead
Unrecognized selector -[Swift._NSContiguousString fileSystemRepresentation]
这是应该报告的Xcode问题，还是我不知怎么错过了一个设置？
Swift Package Manager设置了以下内容，在另一个项目中为我解决了这个问题：
SWIFT_FORCE_DYNAMIC_LINK_STDLIB = YES
SWIFT_FORCE_STATIC_LINK_STDLIB = NO
请注意，搜索路径设置为：
LD_RUNPATH_SEARCH_PATHS = $(TOOLCHAIN_DIR)/usr/lib/swift/macosx @executable_path
在"命令行工具"目标中。。设置以下内容。。。
LD_RUNPATH_SEARCH_PATHS = @executable_path
（或者Xcode称之为"Runtime Search Paths"）设置此项，@rpath，本质上是，表示。。"嘿，在‘tool’运行的任何文件夹中查找"可动态加载的libs。（在这种情况下，它将是您的build文件夹。
其他有用的@rpath组合包括通过@loader_path到可执行文件（在某些情况下，也可以是库或框架二进制文件）的类似的相对路径。假设lib是否绑定在一个框架内。。它可能需要@loader_path/Frameworks的LD_RUNPATH_SEARCH_PATHS等。
以上内容对我很有用。两个用户构建标志，然后在运行时设置以下搜索路径。
LD_RUNPATH_SEARCH_PATHS = $(TOOLCHAIN_DIR)/usr/lib/swift/macosx @executable_path