C++ OSX Scons构建共享库：架构x86_64的未定义符号_C++_Xcode_Macos_Opencv_Scons

C++ OSX Scons构建共享库：架构x86_64的未定义符号

c++ xcode macos opencv

C++ OSX Scons构建共享库：架构x86_64的未定义符号,c++,xcode,macos,opencv,scons,C++,Xcode,Macos,Opencv,Scons,字幕：架构x86_64的未定义符号：在Mac OSX El Captain x86_64上使用SCON构建OpenCV和dlib 我一直在尝试让我的应用程序跨平台构建我有一个SCons脚本，它目前在windows上构建得很好，但在Mac上构建失败我相信这是由于与较新版本的XCode发生冲突造成的，因为我的代码和SCON的一些早期版本工作得很好（在重构之前）下面是错误消息，我相信这是很常见的，但我似乎没有找到一种补救方法在OpenCV2 highgui中，cap_avfoundation.

字幕：架构x86_64的未定义符号：在Mac OSX El Captain x86_64上使用SCON构建OpenCV和dlib

我一直在尝试让我的应用程序跨平台构建

我有一个SCons脚本，它目前在windows上构建得很好，但在Mac上构建失败

我相信这是由于与较新版本的XCode发生冲突造成的，因为我的代码和SCON的一些早期版本工作得很好（在重构之前）

下面是错误消息，我相信这是很常见的，但我似乎没有找到一种补救方法

在OpenCV2 highgui中，cap_avfoundation.mm

Undefined symbols for architecture x86_64:
  "_AVCaptureSessionPresetMedium", referenced from:
      CvCaptureCAM::startCaptureDevice(int) in libOpencvHighgui.a(cap_avfoundation.o)
  "_AVFileTypeAppleM4V", referenced from:
      CvVideoWriter_AVFoundation::CvVideoWriter_AVFoundation(char const*, int, double, CvSize, int) in libOpencvHighgui.a(cap_avfoundation.o)
  "_AVFileTypeMPEG4", referenced from:
      CvVideoWriter_AVFoundation::CvVideoWriter_AVFoundation(char const*, int, double, CvSize, int) in libOpencvHighgui.a(cap_avfoundation.o)
  "_AVFileTypeQuickTimeMovie", referenced from:
      CvVideoWriter_AVFoundation::CvVideoWriter_AVFoundation(char const*, int, double, CvSize, int) in libOpencvHighgui.a(cap_avfoundation.o)
  "_AVMediaTypeVideo", referenced from:
      CvCaptureCAM::startCaptureDevice(int) in libOpencvHighgui.a(cap_avfoundation.o)
      CvCaptureFile::CvCaptureFile(char const*) in libOpencvHighgui.a(cap_avfoundation.o)
      CvVideoWriter_AVFoundation::CvVideoWriter_AVFoundation(char const*, int, double, CvSize, int) in libOpencvHighgui.a(cap_avfoundation.o)

。。。 ...

在OpenCV2 highgui中，window_.mm

  "_OBJC_CLASS_$_NSSlider", referenced from:
      objc-class-ref in libOpencvHighgui.a(window_cocoa.o)
  "_OBJC_CLASS_$_NSString", referenced from:
      objc-class-ref in libOpencvHighgui.a(window_cocoa.o)
      objc-class-ref in libOpencvHighgui.a(cap_avfoundation.o)
  "_OBJC_CLASS_$_NSTextField", referenced from:
      objc-class-ref in libOpencvHighgui.a(window_cocoa.o)
  "_OBJC_CLASS_$_NSThread", referenced from:
      objc-class-ref in libOpencvHighgui.a(window_cocoa.o)
  "_OBJC_CLASS_$_NSURL", referenced from:

。。。 ...

除了构建OpenCV之外，dlib_18_14 source.cpp中也发生了相同的错误

  "_XAllocColor", referenced from:
      void nativefont::font_renderer::font_renderer::vals_internal::create<unsigned int>(unsigned int*, int, bool, bool, bool, nativefont::font_renderer::font_renderer::rgb_type, nativefont::font_renderer::font_renderer::rgb_type) in libThirdPartyDlib_18_14.a(source.o)
  "_XAllocSizeHints", referenced from:
      dlib::base_window::set_size(int, int) in libThirdPartyDlib_18_14.a(source.o)
      dlib::base_window::base_window(bool, bool) in libThirdPartyDlib_18_14.a(source.o)
      dlib::gui_core_kernel_2_globals::event_handler_thread::event_handler() in libThirdPartyDlib_18_14.a(source.o)
  "_XChangeProperty", referenced from:
      dlib::gui_core_kernel_2_globals::event_handler_thread::event_handler() in libThirdPartyDlib_18_14.a(source.o)
  "_XCheckIfEvent", referenced from:
      dlib::gui_core_kernel_2_globals::event_handler_thread::event_handler() in libThirdPartyDlib_18_14.a(source.o)
  "_XClearArea", referenced from:
      dlib::base_window::invalidate_rectangle(dlib::rectangle const&) in libThirdPartyDlib_18_14.a(source.o)
  "_XCloseDisplay", referenced from:
      nativefont::font_renderer::font_renderer::vals_internal::~vals_internal() in libThirdPartyDlib_18_14.a(source.o)
      dlib::gui_core_kernel_2_globals::event_handler_thread::~event_handler_thread() in libThirdPartyDlib_18_14.a(source.o)
  "_XCloseIM", referenced from:
      dlib::gui_core_kernel_2_globals::event_handler_thread::~event_handler_thread() in libThirdPartyDlib_18_14.a(source.o)
  "_XConvertSelection", referenced from:
      dlib::get_from_clipboard(std::__1::basic_string<wchar_t, std::__1::char_traits<wchar_t>, std::__1::allocator<wchar_t> >&) in libThirdPartyDlib_18_14.a(source.o)
  "_XCreateFontSet", referenced from:
      dlib::base_window::base_window(bool, bool) in libThirdPartyDlib_18_14.a(source.o)
      void nativefont::font_renderer::font_renderer::vals_internal::create<unsigned int>(unsigned int*, int, bool, bool, bool, nativefont::font_renderer::font_renderer::rgb_type, nativefont::font_renderer::font_renderer::rgb_type) in libThirdPartyDlib_18_14.a(source.o)

我不能在这里公开整个源代码，也不能公开SCON构建脚本，所以请注意

这是构建共享库（构建静态库没有问题，只有共享库）时我的scons脚本的示例片段：

这是你的电话号码

以下是InstallTargetShared的外观：

def __install_shared(ienv, name, srcs):
    ienv.SharedLibrary(target = os.path.join(env.get('BUILD_DIR') +'/bin/', name), source = srcs)
    env.AppendUnique(TS = [name])

env.AddMethod(__install_shared, 'InstallTargetShared')

在此问题上，如有任何帮助或建议，我们将不胜感激

查看完整的构建日志，我认为您需要链接几个OSX框架来解决您的问题。我在链接命令行中没有看到任何链接：

g++ -o out/darwin/x86_64/release/1.0.0/bin/libAPI3dfi_api_v1.dylib -ldl -lpthread -mmacosx-version-min=10.11 -DWITH_OPENEXR=OFF -dynamiclib out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Api.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_App_Manager.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_App_Params.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_App_Retry.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Device_Heartbeat.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Device_Init.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Frame_Stats.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Manager.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Session_Assign.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Session_End.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Session_Start.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/SHA1Hash.os -L/usr/local/lib -L/opt/local/lib -Ldeps/darwin/lib/x86_64 -Lout/darwin/x86_64/release/1.0.0 -L. -Lout/darwin/x86_64/release/1.0.0/bin -Lbin -Lout/darwin/x86_64/release/1.0.0/lib -Llib -L/Users/tllewellynn/Desktop/dev/build_scons/runtime/darwin/xcode/x86_64/pthread/lib -L/Users/tllewellynn/Desktop/dev/build_scons/runtime/darwin/xcode/x86_64/intraface/lib -lSDK3dfi_detect -lSDK3dfi_algo -lSDK3dfi_au -lSDK3dfi_align -lSDK3dfi_proc -lSDK3dfi_cluster -lSDK3dfi_attr -lSDK3dfi_type -lOpencvCore -lOpencvHighgui -lOpencvImgproc -lOpencvObjdetect -lOpencvFlann -lOpencvFeature2d -lOpencvVideo -lOpencvCalib3d -lOpencvMl -lFreeimage -lFreeimageOpenEXR -lFreeimageLibTIFF -lFreeimageLibPNG -lFreeimageLibOpenJPEG -lFreeimageLibJPEG -lFreeimageLibMNG -lFreeimageZLib -lFrameworkNvaam_base -lFrameworkNvaam_filter -lFrameworkNvaam -lFrameworkProtobuf -lFrameworkLibbff -lFrameworkNvclassifier -lFrameworkNvexpression -lFrameworkTrimesh2 -lFrameworkPolyfit -lFrameworkGClasses -lFrameworkFlandmark -lFrameworkAlglib -lNetMsgpack -lNetJsoncpp -lNetTinyxml2 -lNetTinyxmlparam -lCnnEblearnTools -lCnnEblearnIdx -lCnnEblearn -lThirdPartyDlib_18_14 -lSystemTinycthread -lSystemTinythread -lSystemGlobal -lSystemDebug -lpthread -lTbb -F/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/

你在openCV论坛或IRC频道上问过吗

您的链接行中似乎缺少几个关键框架。

什么是“InstallTargetShared”@bdbaddog InstallTargetShared是一个自定义函数，用于创建共享库，在windows上运行良好。如果您无法在此处发布源代码，最简单的方法是创建一个最小工作示例（MWE）用它来问你的问题。否则，我们将无法正确调试您的问题…@dirkbaechle我认为我发现的问题是使用SCons从源代码处编译第三方库OpenCV。我能够构建所有静态库，但在使用OpenCV 2.4.6和dlib构建共享库时，它会输出上面的错误，源代码没有任何内容。您可以将源代码发布到InstallTargetShared吗？或者像德克提到的，用一个最简单的例子来说明你的问题。除非我们可能无法解决您的问题。关于你的构建的完整日志如何？我只是为了OpenCV链接问题将它链接到一些框架，如CoreMedia和CoreVideo。关于dlib，我在它的Github存储库中发布了一个问题，并发现我需要针对X11进行链接。

def __install_shared(ienv, name, srcs):
    ienv.SharedLibrary(target = os.path.join(env.get('BUILD_DIR') +'/bin/', name), source = srcs)
    env.AppendUnique(TS = [name])

env.AddMethod(__install_shared, 'InstallTargetShared')

g++ -o out/darwin/x86_64/release/1.0.0/bin/libAPI3dfi_api_v1.dylib -ldl -lpthread -mmacosx-version-min=10.11 -DWITH_OPENEXR=OFF -dynamiclib out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Api.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_App_Manager.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_App_Params.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_App_Retry.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Device_Heartbeat.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Device_Init.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Frame_Stats.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Manager.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Session_Assign.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Session_End.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/NV3DFI_Event_Session_Start.os out/darwin/x86_64/release/1.0.0/src/api/3dfi_api_v1/src/SHA1Hash.os -L/usr/local/lib -L/opt/local/lib -Ldeps/darwin/lib/x86_64 -Lout/darwin/x86_64/release/1.0.0 -L. -Lout/darwin/x86_64/release/1.0.0/bin -Lbin -Lout/darwin/x86_64/release/1.0.0/lib -Llib -L/Users/tllewellynn/Desktop/dev/build_scons/runtime/darwin/xcode/x86_64/pthread/lib -L/Users/tllewellynn/Desktop/dev/build_scons/runtime/darwin/xcode/x86_64/intraface/lib -lSDK3dfi_detect -lSDK3dfi_algo -lSDK3dfi_au -lSDK3dfi_align -lSDK3dfi_proc -lSDK3dfi_cluster -lSDK3dfi_attr -lSDK3dfi_type -lOpencvCore -lOpencvHighgui -lOpencvImgproc -lOpencvObjdetect -lOpencvFlann -lOpencvFeature2d -lOpencvVideo -lOpencvCalib3d -lOpencvMl -lFreeimage -lFreeimageOpenEXR -lFreeimageLibTIFF -lFreeimageLibPNG -lFreeimageLibOpenJPEG -lFreeimageLibJPEG -lFreeimageLibMNG -lFreeimageZLib -lFrameworkNvaam_base -lFrameworkNvaam_filter -lFrameworkNvaam -lFrameworkProtobuf -lFrameworkLibbff -lFrameworkNvclassifier -lFrameworkNvexpression -lFrameworkTrimesh2 -lFrameworkPolyfit -lFrameworkGClasses -lFrameworkFlandmark -lFrameworkAlglib -lNetMsgpack -lNetJsoncpp -lNetTinyxml2 -lNetTinyxmlparam -lCnnEblearnTools -lCnnEblearnIdx -lCnnEblearn -lThirdPartyDlib_18_14 -lSystemTinycthread -lSystemTinythread -lSystemGlobal -lSystemDebug -lpthread -lTbb -F/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/