c++ - Mac C++ Clion，体系结构x86_64的 undefined symbol ，功能

Question

我是新手，并且使用MacOS Clion开发C++程序，但没有遇到解决问题的方法，请帮帮我，谢谢!
.h文件:

namespace VLJudge {

class JudgeProcess {

public:
    static JudgeProcess* instance();
    void fileProcess(const std::string &file_path_, const std::string &folder_out,
                     const std::vector<std::string> &outs);

private:
    static JudgeProcess* instance_;

    bool verifySizes(const cv::Mat &mat, cv::Rect mr);
};

}

.cpp文件:

#include "judge/judge_process.h"
#include "vl.h"
using namespace cv;
using namespace std;
using namespace VL;
namespace VLJudge {
const int DEFAULT_WIDTH_SIZE = 1000;
const int THRESHOLD_MAX_VALUE = 255;
const int DEFAULT_GAUSSIANBLUR_SIZE = 11;
const int THRESHOLD_BLOCK_SIZE = 25;
const int THRESHOLD_CONST_VALUE = 5;

const int DEFAULT_MORPH_SIZE_WIDTH = 15;  // 17
const int DEFAULT_MORPH_SIZE_HEIGHT = 1;  // 3
void JudgeProcess::fileProcess(const std::string &file_path_, const std::string &folder_out,
                               const std::vector<std::string> &outs) {

    std::vector<std::string> files;
    cv::Mat image, zoom, blur, gray, threshold, morphology;

    image = cv::imread(file_path_, ImreadModes::IMREAD_COLOR);

    Utils::resizeScale(image, zoom, DEFAULT_WIDTH_SIZE);

    GaussianBlur(zoom, blur, Size(DEFAULT_GAUSSIANBLUR_SIZE, DEFAULT_GAUSSIANBLUR_SIZE), 0, 0);

    cvtColor(blur, gray, CV_RGB2GRAY);

    adaptiveThreshold(gray, threshold, THRESHOLD_MAX_VALUE, CV_ADAPTIVE_THRESH_MEAN_C, CV_THRESH_BINARY_INV,
                      THRESHOLD_BLOCK_SIZE, THRESHOLD_CONST_VALUE);

    Mat element = cv::getStructuringElement(MORPH_ELLIPSE,
                                            Size(DEFAULT_MORPH_SIZE_WIDTH, DEFAULT_MORPH_SIZE_HEIGHT));
    morphologyEx(threshold, morphology, MORPH_CLOSE, element);

    vector<vector<Point> > contours;
    findContours(morphology, contours, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);

    vector<Rect> outRects;
    for (int i = 0; i < contours.size(); i++) {
        Rect rect = cv::boundingRect(Mat(contours.at(i)));
        if (verifySizes(zoom, rect)) {
            outRects.push_back(rect);
            cv::Mat tempImg;
            zoom(outRects[i]).copyTo(tempImg);
            string filename = folder_out + "/" + Utils::getFileName(file_path_) + "_" + Utils::int2str(i) + ".jpg";
            files.push_back(filename);
            imwrite(filename, tempImg);
        }
    }
}


bool JudgeProcess::verifySizes(const cv::Mat &mat, cv::Rect mr) {
    if (1.0 * mr.y > 100 || 1.0 * mr.width * mr.height < 510.0f || mr.x == 0 || mr.y == 0) {
        return false;
    }
    return true;
}

JudgeProcess* JudgeProcess::instance_ = nullptr;

JudgeProcess* JudgeProcess::instance() {
    if (!instance_) {
        instance_ = new JudgeProcess;
    }
    return instance_;
}

}

调用功能代码:

#include "vl.h"
#include "judge/judge_process.h"

using namespace std;

const string test_file_path = "../../resource/judge/origin/1_standard.png";
const string file_process = "../../resource/judge/origin/1_standard.png";

int main(int argc, char *argv[]) {
    std::vector<std::string> filenames ;
       VLJudge::JudgeProcess::instance()->fileProcess(test_file_path,file_process,filenames);

    for (int i = 0; i < filenames.size(); ++i) {
            string filename = filenames.at(i);
    }

    return 0;

}

和错误日志:

/Applications/CLion.app/Contents/bin/cmake/bin/cmake --build / Users / liqiang / Library / Caches / CLion12 / cmake / Generated / 6f5d7cd5 / 6f5d7cd5 / Debug --target VehicleLicenseOCR--j 4
扫描目标VehicleLicenseOCR的依赖项
[50％]构建CXX对象CMakeFiles / VehicleLicenseOCR.dir / src / judge /main_judge.cpp.o
[100％]链接CXX可执行文件VehicleLicenseOCR
架构x86_64的 undefined symbol :
“VLJudge::JudgeProcess::fileProcess(std::__ 1::basic_string，std::__ 1::allocator> const＆，std::__ 1::basic_string，std::__ 1::allocator> const＆，std::__ 1: :vector，std::__ 1::allocator>，std::__ 1::allocator，std::__ 1::allocator>>> const＆)“，引用自:
_main在main_judge.cpp.o中
“VLJudge::JudgeProcess::instance()”，引用自:
_main在main_judge.cpp.o中
ld:找不到架构x86_64的符号
铛:错误:链接器命令失败，退出代码为1(使用-v查看调用)
make [3]: * [VehicleLicenseOCR]错误1
make [2]: [CMakeFiles / VehicleLicenseOCR.dir / all]错误2
make [1]: [CMakeFiles / VehicleLicenseOCR.dir / rule]错误2
制作:* [VehicleLicenseOCR]错误2

Answer 1

我有一个类似的问题，尽管库不同。
我认为答案here可能有帮助!
我认为您需要做的是正确配置CMakeLists.txt文件，以便在编译时链接库(前提是已在系统上正确安装了库)。
通常只需下载，然后使用以下命令来安装库。

./configure
make
make install

解决方案...
我认为您的CMakeLists.txt文件应包含与此类似的内容...
包括mac os软件包目录
这是我的库自行安装的位置

include_directories(/usr/local/lib/pkgconfig)

查找图书馆

find_library(<LIBRARY_NAME>_lib <LIBRARY_NAME>)

# Group the libraries
set(frameworks
        ${<LIBRARY_NAME>_lib})

分组源文件

set(SOURCE_FILES main.c main.h)

add_executable(Test ${SOURCE_FILES})

链接库

target_link_libraries(Test ${frameworks})

我希望这有助于您走上正确的轨道!