架构x86_64的未定义符号：在Qt Creator上，我使用的是OSX 10.10.3

时间：2015-08-15 05:35:58

标签： c++ macos qt opencv

我正在尝试为现有的 C ++ 项目编写UI。为了修改代码，我必须确保原始项目可以在 Qt Creator 上运行。

该项目需要使用 opencv ，我坚持在 Qt Creator 上设置opencv。我正在使用 Qt 5.5 和 opencv 2.4.10

这就是.pro的样子：

QT       += core
QT       -= gui

TARGET = struck  
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = ap p

INCLUDEPATH += /usr/local/include/opencv
INCLUDEPATH += /usr/local/include/opencv2
INCLUDEPATH += /usr/local/include


LIBS += -L/usr/local/lib\

-lopencv_core
-lopencv_highgui



SOURCES += \
../../../../struck_qt/src/GraphUtils/GraphUtils.cpp \
../../../../struck_qt/src/Config.cpp \
../../../../struck_qt/src/Features.cpp \
../../../../struck_qt/src/HaarFeature.cpp \
../../../../struck_qt/src/HaarFeatures.cpp \
../../../../struck_qt/src/HistogramFeatures.cpp \
../../../../struck_qt/src/ImageRep.cpp \
../../../../struck_qt/src/LaRank.cpp \
../../../../struck_qt/src/main.cpp \
../../../../struck_qt/src/MultiFeatures.cpp \
../../../../struck_qt/src/RawFeatures.cpp \
../../../../struck_qt/src/Sampler.cpp \
../../../../struck_qt/src/Tracker.cpp

HEADERS += \
../../../../struck_qt/src/GraphUtils/GraphUtils.h \
../../../../struck_qt/src/Config.h \
../../../../struck_qt/src/Features.h \
../../../../struck_qt/src/HaarFeature.h \
../../../../struck_qt/src/HaarFeatures.h \
../../../../struck_qt/src/HistogramFeatures.h \
../../../../struck_qt/src/ImageRep.h \
../../../../struck_qt/src/Kernels.h \
../../../../struck_qt/src/LaRank.h \
../../../../struck_qt/src/MultiFeatures.h \
../../../../struck_qt/src/RawFeatures.h \
../../../../struck_qt/src/Rect.h \
../../../../struck_qt/src/Sample.h \
../../../../struck_qt/src/Sampler.h \
../../../../struck_qt/src/Tracker.h

我收到的错误消息如下： 

 Undefined symbols for architecture x86_64:
    "cv::_InputArray::_InputArray(cv::Mat const&)", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
      LaRank::Update(MultiSample const&, int) in LaRank.o
      LaRank::Debug() in LaRank.o
      LaRank::UpdateDebugImage() in LaRank.o
      _main in main.o
      RawFeatures::UpdateFeatureVector(Sample const&) in RawFeatures.o
      Tracker::Debug() in Tracker.o
      ...
  "cv::_InputArray::_InputArray(double const&)", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
      LaRank::UpdateDebugImage() in LaRank.o
      Tracker::Reset() in Tracker.o
      Tracker::UpdateDebugImage(std::__1::vector<Rect<float>, std::__1::allocator<Rect<float> > > const&, Rect<float> const&, std::__1::vector<double, std::__1::allocator<double> > const&) in Tracker.o
  "cv::namedWindow(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int)", referenced from:
      _main in main.o
  "cv::VideoCapture::open(int)", referenced from:
      _main in main.o
  "cv::VideoCapture::VideoCapture()", referenced from:
      _main in main.o
  "cv::VideoCapture::~VideoCapture()", referenced from:
      _main in main.o
  "cv::VideoCapture::operator>>(cv::Mat&)", referenced from:
      _main in main.o
  "cv::_OutputArray::_OutputArray(cv::Mat&)", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
      LaRank::Update(MultiSample const&, int) in LaRank.o
      LaRank::UpdateDebugImage() in LaRank.o
      _main in main.o
      RawFeatures::UpdateFeatureVector(Sample const&) in RawFeatures.o
  "cv::Mat::deallocate()", referenced from:
      cv::Mat::release() in ImageRep.o
      cv::Mat::release() in LaRank.o
      cv::Mat::release() in main.o
      cv::Mat::release() in RawFeatures.o
      cv::Mat::release() in Tracker.o
  "cv::Mat::setTo(cv::_InputArray const&, cv::_InputArray const&)", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
      LaRank::UpdateDebugImage() in LaRank.o
      Tracker::Reset() in Tracker.o
      Tracker::UpdateDebugImage(std::__1::vector<Rect<float>, std::__1::allocator<Rect<float> > > const&, Rect<float> const&, std::__1::vector<double, std::__1::allocator<double> > const&) in Tracker.o
  "cv::Mat::create(int, int const*, int)", referenced from:
      cv::Mat::create(int, int, int) in ImageRep.o
      cv::Mat::create(int, int, int) in LaRank.o
      cv::Mat::create(int, int, int) in main.o
      cv::Mat::create(int, int, int) in RawFeatures.o
      cv::Mat::create(int, int, int) in Tracker.o
  "cv::Mat::copySize(cv::Mat const&)", referenced from:
      cv::Mat::Mat(cv::Mat const&) in ImageRep.o
      cv::Mat::operator=(cv::Mat const&) in LaRank.o
      cv::Mat::Mat(cv::Mat const&) in LaRank.o
  "cv::Mat::Mat(cv::Mat const&, cv::Rect_<int> const&)", referenced from:
      cv::Mat::operator()(cv::Rect_<int> const&) const in LaRank.o
      cv::Mat::operator()(cv::Rect_<int> const&) const in RawFeatures.o
  "cv::flip(cv::_InputArray const&, cv::_OutputArray const&, int)", referenced from:
      _main in main.o
  "cv::split(cv::Mat const&, std::__1::vector<cv::Mat, std::__1::allocator<cv::Mat> >&)", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
  "cv::imread(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int)", referenced from:
      _main in main.o
  "cv::imshow(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, cv::_InputArray const&)", referenced from:
      LaRank::Debug() in LaRank.o
      _main in main.o
      Tracker::Debug() in Tracker.o
  "cv::resize(cv::_InputArray const&, cv::_OutputArray const&, cv::Size_<int>, double, double, int)", referenced from:
      LaRank::Update(MultiSample const&, int) in LaRank.o
      LaRank::UpdateDebugImage() in LaRank.o
      _main in main.o
      RawFeatures::UpdateFeatureVector(Sample const&) in RawFeatures.o
  "cv::noArray()", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
      LaRank::UpdateDebugImage() in LaRank.o
      Tracker::Reset() in Tracker.o
      Tracker::UpdateDebugImage(std::__1::vector<Rect<float>, std::__1::allocator<Rect<float> > > const&, Rect<float> const&, std::__1::vector<double, std::__1::allocator<double> > const&) in Tracker.o
  "cv::waitKey(int)", referenced from:
      _main in main.o
  "cv::cvtColor(cv::_InputArray const&, cv::_OutputArray const&, int, int)", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
      LaRank::UpdateDebugImage() in LaRank.o
      _main in main.o
  "cv::fastFree(void*)", referenced from:
      cv::Mat::~Mat() in ImageRep.o
      cv::Mat::~Mat() in LaRank.o
      cv::Mat::~Mat() in main.o
      cv::Mat::~Mat() in RawFeatures.o
      cv::Mat::~Mat() in Tracker.o
  "cv::integral(cv::_InputArray const&, cv::_OutputArray const&, int)", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
  "cv::rectangle(cv::Mat&, cv::Point_<int>, cv::Point_<int>, cv::Scalar_<double> const&, int, int, int)", referenced from:
      LaRank::UpdateDebugImage() in LaRank.o
      rectangle(cv::Mat&, Rect<float> const&, cv::Scalar_<double> const&) in main.o
  "cv::Mat::copyTo(cv::_OutputArray const&) const", referenced from:
      ImageRep::ImageRep(cv::Mat const&, bool, bool, bool) in ImageRep.o
      _main in main.o
  "cv::Mat::operator _IplImage() const", referenced from:
      LaRank::UpdateDebugImage() in LaRank.o
  "vtable for cv::_InputArray", referenced from:
      cv::_InputArray::_InputArray(cv::Scalar_<double> const&) in LaRank.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "_cvCreateImage", referenced from:
      _drawFloatGraph in GraphUtils.o
      _drawIntGraph in GraphUtils.o
      _drawUCharGraph in GraphUtils.o
  "_cvInitFont", referenced from:
      _drawFloatGraph in GraphUtils.o
      _drawIntGraph in GraphUtils.o
      _drawUCharGraph in GraphUtils.o
  "_cvLine", referenced from:
      _drawFloatGraph in GraphUtils.o
      _drawIntGraph in GraphUtils.o
      _drawUCharGraph in GraphUtils.o
  "_cvNamedWindow", referenced from:
      _showFloatGraph in GraphUtils.o
      _showIntGraph in GraphUtils.o
      _showUCharGraph in GraphUtils.o
      _showImage in GraphUtils.o
  "_cvPutText", referenced from:
      _drawFloatGraph in GraphUtils.o
      _drawIntGraph in GraphUtils.o
      _drawUCharGraph in GraphUtils.o
  "_cvReleaseImage", referenced from:
      _showFloatGraph in GraphUtils.o
      _showIntGraph in GraphUtils.o
      _showUCharGraph in GraphUtils.o
  "_cvSet", referenced from:
      _drawFloatGraph in GraphUtils.o
      _drawIntGraph in GraphUtils.o
      _drawUCharGraph in GraphUtils.o
  "_cvShowImage", referenced from:
      _showFloatGraph in GraphUtils.o
      _showIntGraph in GraphUtils.o
      _showUCharGraph in GraphUtils.o
      _showImage in GraphUtils.o
  "_cvWaitKey", referenced from:
      _showFloatGraph in GraphUtils.o
      _showIntGraph in GraphUtils.o
      _showUCharGraph in GraphUtils.o
      _showImage in GraphUtils.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [struck] Error 1
01:10:53: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project struck (kit: Desktop Qt 5.5.0 clang 64bit)
When executing step "Make"
01:10:53: Elapsed time: 00:01.

以下是我尝试过的以及我对此感到好奇的事情：

1。有一篇帖子建议使用-lopencv_core代替-libopencv_core2.4.10或libopencv_core。我试过了两个，都没有成功。

2. 如果我删除该行：

LIBS += -L/usr/local/lib\

-lopencv_core
-lopencv_highgui`

我得到的错误与上面完全相同。我怀疑我没有成功地包含该库。

3。有帖子建议从qmake.conf更改QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.X到QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.10。我做了，但它没有用。

4. 如果我这样做：

LIBS +=     LIBS += -L/usr/local/lib\

LIBS += -lopencv_core
LIBS += -lopencv_highgui

它会声称未找到该库。

我真的很关心这个问题，因为我真的需要在 Qt Creator 上设置项目才能做进一步的工作。

如果有人知道如何解决它，请帮助我。谢谢！

注意： 我只把lopencv_core和-lopencv_highgui放在那里，因为我试过在那里包含opencv库的所有标题，错误信息是相同的。

我仔细检查了所有.dylib个文件都在/usr/local/lib

中

2 个答案:

答案 0 :(得分：0)

为了进一步参考，您应该查看qmake手册，因为.pro文件被qmake用于生成Makefile，然后由{{1}使用构建你的项目。您遇到的问题与Qt Creator完全无关 - Qt Creator恰好是您正在使用的IDE。您不是“配置”IDE，而是一个qmake项目。

这是错误的：

make

您需要将所有库添加到LIBS变量中。行继续符LIBS += -L/usr/local/lib\ -lopencv_core -lopencv_highgui 仅通知qmake以下空行是\行的延续。因此，您的条目被解释为：

LIBS...

你只需要将它全部放在一行上，或者在每一行上都有续行，但最后一行。以下都是等效和正确的，并注意空格很重要！

LIBS += -L/usr/local/lib
-lopencv_core (junk)
-lopencv_highui (junk)

你也可以有这些的组合。它们的效果完全相同：# way 1 LIBS += -L/usr/local/lib \ -lopencv_core \ -lopencv_highui # way 2 LIBS += -L/usr/local/lib\ -lopencv_core\ -lopencv_highui # way 3 LIBS += -L/usr/local/lib -lopencv_core -lopencv_highgui # way 4 LIBS += -L/usr/local/lib LIBS += -lopencv_core LIBS += -lopencv_highui 配置条目添加了三个元素（LIBS元素和两个-L元素）。

您必须确保存在-l和/usr/local/lib/libopencv_core.dylib。 /usr/local/lib/libopencv_highgui.dylib的含义是-lFOO。

答案 1 :(得分：0)

更新此处，问题已解决

这里有几点需要澄清：

包含库的正确方法是： 

LIBS += -L/usr/local/lib\
        -lopencv_core\
        -lopencv_highgui

确保libopencv_coreX.X.X.dylib（和其他.dylib）文件位于文件夹/ usr / local / lib

中

确保你写     -lopencv_core 代替     -libopencv_core2.4.10（2.4.10只是一个版本）

确保对要包含的每个库进行缩进，例如：

 LIBS += -L/usr/local/lib\
 -lopencv_core\
 -lopencv_highgui

是错误，通过执行此操作，我收到错误消息“测试表达后的额外字符”

通过完成Kuba Ober在下面提出的建议，在我解决了这些之后，一切都运行得非常好！

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