带有Swift Cocoa库的OSX命令行工具,未加载库

Question

尝试运行目标时抛出以下错误:

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(OSX).我正在使用用Swift编写的Cocoa Framework(PriorityQueue).当我EMBEDDED_CONTENT_CONTAINS_SWIFT在框架上设置为yes时,目标将运行以下警告:

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.

然后崩溃(可能是无关的):

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

这是Xcode应该报告的问题,还是我错过了设置？

Answer 1

Swift Package Manager设置了以下内容,它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

Answer 2

在您的"命令行工具"目标..设置以下...

LD_RUNPATH_SEARCH_PATHS = @executable_path

(或者Xcode称他们为" Runtime Search Paths")设置此,在@rpath,在本质上说.'哎,看在任何文件夹中的'工具’中的’正在运行的动态加载的库.(在这种情况下,它将是您的build文件夹.

其他有用的@rpath组合涉及到可执行文件的类似相对路径(在某些情况下,它也可以是库或框架二进制文件),via @loader_path.如果说的lib是一个框架内捆绑的.它可能需要LD_RUNPATH_SEARCH_PATHS的@loader_path/Frameworks,等等.