(前置定义)error: '__gthread_mutex_t' does not name a type 121 | __gthread_mutex_t _M_mutex；

问题：

process.h

#ifndef PROCESS_H
#define PROCESS_H

#include <opencv2/opencv.hpp>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <cmath>

void test(void);

namespace prc
{
    class PROCESS
    {
    public:
        std::string orgName;
        std::string _outPath;
        const std::vector<float> mean{ 0.485f, 0.456f, 0.406f };
        const std::vector<float> stddev{ 0.229f, 0.224f, 0.225f };

        PROCESS(const std::string& outpath) :_outPath(outpath) {};
        std::unique_ptr<float> preprocess(const std::string& filename) const;
        std::unique_ptr<float> postprocess() const;

    protected:
        cv::Mat org;
        cv::Mat inp;
        cv::Mat out;

    private:
        cv::Mat __read(const std::string& name) const;
    };
}; // namespace prc

#endif // PROCESS_H

mian.h

#pragma once

#include <string>
#include <fstream>
#include "NvInfer.h"
#include "cuda_runtime_api.h"
#include "NvInferPlugin.h"
#include "logging.h"
#include "process.h"

main.cpp

#include "main.h"

const std::string outpath = "F:/code/projects/threadSeg_Yolo_RT/assets/out";
prc::PROCESS yolo_process(outpath);
int main()
{

    return 0;
}

这样的话会报错 ，是关于关于opencv的。

error: ‘__gthread_mutex_t’ does not name a type 121 | __gthread_mutex_t _M_mutex;

解决方法：

main.h

//mian.h

#pragma once

#include <opencv2/opencv.hpp>    // 这里需要添加opencv头文件
#include <string>
#include <fstream>
#include "NvInfer.h"
#include "cuda_runtime_api.h"
#include "NvInferPlugin.h"
#include "logging.h"
#include "process.h"

c++ class “xxxx“ does not name a type是怎么一回事_c++ does not name a type-CSDN博客

---

来源：CSDN 原文，首次发布于 2024-06-16。