C++ Opencv额外模块未定义符号错误

我已经下载了opencv 3.0.0和opencv contrib。我需要使用opencv contrib的xFeature2D额外模块。我能够获得opencv框架及其libs。但无法获取xFeature2D库。第一,

~/Desktop/opencv-3.0.0/ (building below commands in this dir)

1-我正在运行cmake命令

$cmake -DOPENCV_EXTRA_MODULES_PATH=/Users/dicle/Desktop/opencv-3.0.0/xfeatures2d /Users/dicle/Desktop/opencv-3.0.0/

$make

在输入这2个命令后，我只得到opencv 3个基本模块，而不是额外的模块。。而且只有基本库

我计划使用这个额外的模块，顺便说一句。。1-导入opencv3框架，不带额外模块，然后创建额外模块文件夹，将xfeatures2d模块放入其中，并在我的代码中调用此文件夹（#include），给出额外模块标题的路径，但我有此错误。我想原因可能与额外模块的lib有关。如果你能帮助我，我会很感激的。多谢各位

Undefined symbols for architecture x86_64:
"cv::xfeatures2d::SIFT::create(int, int, double, double, double)", referenced from:
  AnchorBasedValidation::validate(Anchor, cv::Mat, cv::Rect_<int>, cv::Point_<float>) in IDSmart(AnchorBasedValidation.o)
"cv::xfeatures2d::SURF::create(double, int, int, bool, bool)", referenced from:
  KeypointsExtractor::ComputeDescriptor(cv::Mat const&, std::__1::vector<cv::KeyPoint, std::__1::allocator<cv::KeyPoint> >, std::__1::vector<cv::KeyPoint, std::__1::allocator<cv::KeyPoint> >, cv::Mat&, cv::Mat&) in IDSmart(KeypointsExtractor.o)
  KeypointsExtractor::ExtractKeypoint(cv::Mat const&, std::__1::vector<cv::KeyPoint, std::__1::allocator<cv::KeyPoint> >&, std::__1::vector<cv::KeyPoint, std::__1::allocator<cv::KeyPoint> >&, std::__1::vector<cv::Rect_<int>, std::__1::allocator<cv::Rect_<int> > > const&) in IDSmart(KeypointsExtractor.o)
  KeypointsExtractor::ExtractClusterHistogram(cv::Mat const&, cv::Mat, std::__1::vector<cv::KeyPoint, std::__1::allocator<cv::KeyPoint> >) in IDSmart(KeypointsExtractor.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

架构x86_64的未定义符号： “cv:：xfeatures2d:：SIFT:：create（int，int，double，double，double）”，引用自： 在IDSmart（AnchorBasedValidation.o）中，AnchorBasedValidation:：validate（锚点、cv:：Mat、cv:：Rect_、cv:：Point_） “cv:：xfeatures2d:：SURF:：create（double，int，int，bool，bool）”，引用自： IDSmart（KeypointsExtractor.o）中的KeypointsExtractor:：ComputedDescriptor（cv:：Mat const&，std:：_1:：vector，std:_1:：vector，cv:：Mat&，cv:：Mat&） IDSmart（KeypointsExtractor.o）中的KeypointsExtractor:：ExtractKeypoint（cv:：Mat const&，std:：_1:：vector&，std:_1:：vector&，std:_1:：vector const&） IDSmart（KeypointsExtractor.o）中的KeypointsExtractor:：ExtractClusterHistogram（cv:：Mat const&，cv:：Mat，std:：_1:：vector） ld:找不到架构x86_64的符号 叮当声：错误：链接器命令失败，退出代码为1（使用-v查看调用）

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我不确定，但不应该是cmake-DOPENCV\u EXTRA\u MODULES\u PATH=/Users/dicle/Desktop/opencv\u contrib/MODULES我不确定，但不应该是cmake-DOPENCV\u EXTRA\u MODULES\u PATH=/Users/dicle/Desktop/opencv\u contrib/MODULES吗