@q1099009839
最终是成了，给后学者我的配置内容 注意最下面有关UVC的不要勾选，因为基于linux5.4里没有buf2相关的内容。还有在配置下内核使用make kernel_menuconfig去看一下UVC的相关设置，一定要在板子的dev下显示video0和video1才行

是真没人回，那就自己回一下，我重新编译了opencv库，链接自己编译的库就没问题了

@q1099009839 vsvs'co'dvscode头文件内容

@q1099009839 这是我的代码#include <opencv4/opencv2/opencv.hpp>
#include <opencv4/opencv2/imgproc.hpp>
#include <opencv4/opencv2/highgui.hpp>
#include <opencv4/opencv2/objdetect.hpp>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/videodev2.h>
#include <string.h>
#include <sys/mman.h>
#include <jpeglib.h>
#include <linux/fb.h>

int fd_fb;
int screen_size; // 屏幕像素大小
int LCD_width; // LCD宽度
int LCD_height; // LCD高度
unsigned char *fbbase = NULL; // LCD显存地址
unsigned long line_length; // LCD一行的长度（字节为单位）
unsigned int bpp; // 像素深度bpp

cv::CascadeClassifier face_cascade;

/* 初始化LCD /
int LCD_Init(void)
{
struct fb_var_screeninfo var; / Current var /
struct fb_fix_screeninfo fix; / Current fix */

/* 打开图形帧缓冲设备 */
fd_fb = open("/dev/fb0", O_RDWR);
if (fd_fb < 0)
{
    perror("打开LCD失败");
    return -1;
}
/* 获取LCD信息 */
ioctl(fd_fb, FBIOGET_VSCREENINFO, &var); // 获取屏幕可变信息
ioctl(fd_fb, FBIOGET_FSCREENINFO, &fix); // 获取屏幕固定信息
// LCD_width  = var.xres * var.bits_per_pixel / 8;
// pixel_width = var.bits_per_pixel / 8;
screen_size = var.xres * var.yres * var.bits_per_pixel / 8;
LCD_width = var.xres;
LCD_height = var.yres;
bpp = var.bits_per_pixel;
line_length = fix.line_length;
printf("LCD分辨率：%d %d\n", LCD_width, LCD_height);
printf("bpp: %d\n", bpp);
fbbase = (unsigned char*) mmap(NULL, screen_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd_fb, 0);
if (fbbase == (unsigned char *)-1)
{
    printf("can't mmap\n");
    return -1;
}
memset(fbbase, 0xFF, screen_size); // LCD设置为白色背景
return 0;

}/daozhemeiwenti/

int LCD_JPEG_Show(const char *JpegData, int size)
{
int min_hight = LCD_height, min_width = LCD_width, valid_bytes;
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;

cinfo.err = jpeg_std_error(&jerr); // 错误处理对象与解压对象绑定

// 创建解码对象
jpeg_create_decompress(&cinfo);

// 指定解码数据源
jpeg_mem_src(&cinfo, (unsigned char*)JpegData, size);

// 读取图像信息
jpeg_read_header(&cinfo, TRUE);

// printf("jpeg图像的大小为：%d*%d\n", cinfo.image_width, cinfo.image_height);
// 设置解码参数
cinfo.out_color_space = JCS_RGB; // 可以不设置默认为RGB

// cinfo.scale_num = 1;
// cinfo.scale_denom = 1;设置图像缩放，scale_num/scale_denom缩放比例，默认为1

// 开始解码
jpeg_start_decompress(&cinfo);

// 为缓冲区分配空间
unsigned char *jpeg_line_buf = (unsigned char*) malloc(cinfo.output_components * cinfo.output_width);
unsigned int *fb_line_buf = (unsigned int*) malloc(line_length);
       // 每个成员4个字节和RGB888对应

// 判断图像和LCD屏那个分辨率更低
if (cinfo.output_width < min_width)
    min_width = cinfo.output_width;
if (cinfo.output_height < min_hight)
    min_hight = cinfo.output_height;

// 读取数据，数据按行读取
valid_bytes = min_width * bpp / 8; // 一行的有效字节数，实际写进LCD显存的一行数据大小
unsigned char *ptr = fbbase;
while (cinfo.output_scanline < min_hight)
{
    jpeg_read_scanlines(&cinfo, &jpeg_line_buf, 1); // 每次读取一行
    // 将读取到的BGR888数据转化为RGB888
    unsigned int red, green, blue;
    unsigned int color;
    for (int i = 0; i < min_width; i++)
    {
        red = jpeg_line_buf[i * 3];
        green = jpeg_line_buf[i * 3 + 1];
        blue = jpeg_line_buf[i * 3 + 2];
        color = 0xFF000000 | red << 16 | green << 8 | blue;
        fb_line_buf[i] = color;
    }
    memcpy(ptr, fb_line_buf, valid_bytes);
    ptr += LCD_width * bpp / 8;
}

// 完成解码
jpeg_finish_decompress(&cinfo);

// 销毁解码对象
jpeg_destroy_decompress(&cinfo);

// 释放内存
free(jpeg_line_buf);
free(fb_line_buf);

return 1;

}

void detectAndDisplay(cv::Mat frame)
{
std::vectorcv::Rect faces;
cv::Mat frame_gray;

// 转换为灰度图
cv::cvtColor(frame, frame_gray, cv::COLOR_BGR2GRAY);
cv::equalizeHist(frame_gray, frame_gray);

// 检测人脸
face_cascade.detectMultiScale(frame_gray, faces);

// 在图像中绘制矩形框标记人脸
for (size_t i = 0; i < faces.size(); i++)
{
    cv::rectangle(frame, faces[i], cv::Scalar(255, 0, 0), 2);
}

// 显示结果
// cv::imshow("Face Detection", frame); // 如果在调试环境中运行，可以用这个查看图像

}

int main(int argc, char **argv)
{
if (argc != 2)
{
printf("%s </dev/video4...>\n", argv[0]);
return -1;
}

if (!face_cascade.load("/tina-d1-h/out/t113-100ask/staging_dir/target/usr/include/opencv4/opencv2/haarcascade_frontalface_default.xml")) {
    printf("Error loading face cascade\n");
    return -1;
}

/* LCD初始化 */
if (LCD_Init() != 0)
{
    printf("LCD初始化失败！\n"); 
    return -1;
} else {
    printf("LCD初始化成功！\n");
}

/* 1.打开摄像头设备 */
int fd = open(argv[1], O_RDWR);
if (fd < 0)
{
    perror("打开设备失败");
    close(fd);
    return -1;
}

/* 2.设置摄像头采集格式 */
struct v4l2_format vfmt;
vfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;       // 选择视频抓取
vfmt.fmt.pix.width = 800;                // 设置宽，设置为LCD的宽高
vfmt.fmt.pix.height = 600;              // 设置高
vfmt.fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG; // 设置视频采集像素格式
vfmt.fmt.pix.field = V4L2_FIELD_ANY;            

int ret = ioctl(fd, VIDIOC_S_FMT, &vfmt);       // VIDIOC_S_FMT:设置捕获格式
if (ret < 0)
{
    perror("设置采集格式错误");
    printf("实际格式: pixelformat=%c%c%c%c\n",
        (char)(vfmt.fmt.pix.pixelformat),
        (char)(vfmt.fmt.pix.pixelformat >> 8),
        (char)(vfmt.fmt.pix.pixelformat >> 16),
        (char)(vfmt.fmt.pix.pixelformat >> 24));
    close(fd);
    return -1;
}
memset(&vfmt, 0, sizeof(vfmt));                 // 清空vfmt结构体
vfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ret = ioctl(fd, VIDIOC_G_FMT, &vfmt);
if (ret < 0)
{
    perror("读取采集格式失败");
}
printf("设置分辨率width = %d\n", vfmt.fmt.pix.width);
printf("设置分辨率height = %d\n", vfmt.fmt.pix.height);
unsigned char *p = (unsigned char *)&vfmt.fmt.pix.pixelformat;
printf("pixelformat = %c%c%c%c\n", p[0], p[1], p[2], p[3]);

/* 3.申请缓冲队列 */
struct v4l2_requestbuffers reqbuffer;
memset(&reqbuffer, 0, sizeof(reqbuffer));
reqbuffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
reqbuffer.count = 4;                   // 申请4个缓冲区
reqbuffer.memory = V4L2_MEMORY_MMAP;    // 采用内存映射的方式

ret = ioctl(fd, VIDIOC_REQBUFS, &reqbuffer);
if (ret < 0)
{
    perror("申请缓冲队列失败");
}

/* 4.映射，映射之前需要查询缓存信息->每个缓冲区逐个映射->将缓冲区放入队列 */
struct v4l2_buffer mapbuffer;
unsigned char *mmpaddr[4];                    // 用于存储映射后的首地址
unsigned int addr_length[4];                  // 存储映射后空间的大小
mapbuffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; // 初始化type
for (int i = 0; i < reqbuffer.count; i++)
{
    mapbuffer.index = i;
    ret = ioctl(fd, VIDIOC_QUERYBUF, &mapbuffer); // 查询缓存信息
    if (ret < 0)
        perror("查询缓存队列失败");

    mmpaddr[i] = (unsigned char *)mmap(NULL, mapbuffer.length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, mapbuffer.m.offset); // mapbuffer.m.offset映射文件的偏移量

    addr_length[i] = mapbuffer.length;

    // 放入队列
    ret = ioctl(fd, VIDIOC_QBUF, &mapbuffer);
    if (ret < 0)
        perror("放入队列失败");
}

/* 5.开始采集数据 */
int type = V4L2_BUF_TYPE_VIDEO_CAPTURE;     // 捕获
ret = ioctl(fd, VIDIOC_STREAMON, &type);    // 视频流
if (ret < 0)
    perror("打开设备失败");
while (1)
{
    // 从队列中提取一帧数据
    struct v4l2_buffer readbuffer;
    readbuffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
    ret = ioctl(fd, VIDIOC_DQBUF, &readbuffer); // 从缓冲队列获取一帧数据（出队列）
    // 出队列后得到缓存的索引index,得到对应缓存映射的地址mmpaddr[readbuffer.index]
    if (ret < 0)
        perror("获取数据失败");
        /*opencv*/
        cv::Mat frame(LCD_height, LCD_width, CV_8UC3, mmpaddr[readbuffer.index]);
        detectAndDisplay(frame); 
    // 显示在LCD上
    LCD_JPEG_Show((const char *)frame.data, frame.total() * frame.elemSize());
    // 读取数据后将缓冲区放入队列
    ret = ioctl(fd, VIDIOC_QBUF, &readbuffer);
    if (ret < 0)
        perror("放入队列失败");
}

/* 6.关闭设备 */
ret = ioctl(fd, VIDIOC_STREAMOFF, &type);
if (ret < 0)
    perror("关闭设备失败");
/* 7.取消映射 */
for (int i = 0; i < 4; i++)
    munmap(mmpaddr[i], addr_length[i]);

/* 8.关闭设备 */    
close(fd);

return 0;

}
这是动态库信息:
ubuntu@ubuntu1804:~/tina-d1-h/package/camera$ ls -l /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_*
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_aruco.so -> libopencv_aruco.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_aruco.so.4.1 -> libopencv_aruco.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 338892 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_aruco.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_bgsegm.so -> libopencv_bgsegm.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_bgsegm.so.4.1 -> libopencv_bgsegm.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 119144 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_bgsegm.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 28 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_bioinspired.so -> libopencv_bioinspired.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 30 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_bioinspired.so.4.1 -> libopencv_bioinspired.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 220372 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_bioinspired.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_calib3d.so -> libopencv_calib3d.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_calib3d.so.4.1 -> libopencv_calib3d.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 1031836 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_calib3d.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ccalib.so -> libopencv_ccalib.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ccalib.so.4.1 -> libopencv_ccalib.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 267392 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ccalib.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 21 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_core.so -> libopencv_core.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_core.so.4.1 -> libopencv_core.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 2691408 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_core.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_datasets.so -> libopencv_datasets.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_datasets.so.4.1 -> libopencv_datasets.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 307456 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_datasets.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 30 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dnn_objdetect.so -> libopencv_dnn_objdetect.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 32 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dnn_objdetect.so.4.1 -> libopencv_dnn_objdetect.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 37796 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dnn_objdetect.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 20 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dnn.so -> libopencv_dnn.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dnn.so.4.1 -> libopencv_dnn.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 3637832 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dnn.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 20 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dpm.so -> libopencv_dpm.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dpm.so.4.1 -> libopencv_dpm.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 83936 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_dpm.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 21 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_face.so -> libopencv_face.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_face.so.4.1 -> libopencv_face.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 405888 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_face.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_features2d.so -> libopencv_features2d.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 29 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_features2d.so.4.1 -> libopencv_features2d.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 602888 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_features2d.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_flann.so -> libopencv_flann.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_flann.so.4.1 -> libopencv_flann.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 345204 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_flann.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_freetype.so -> libopencv_freetype.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_freetype.so.4.1 -> libopencv_freetype.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 38692 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_freetype.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_fuzzy.so -> libopencv_fuzzy.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_fuzzy.so.4.1 -> libopencv_fuzzy.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 59736 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_fuzzy.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 21 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_gapi.so -> libopencv_gapi.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_gapi.so.4.1 -> libopencv_gapi.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 1576784 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_gapi.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 20 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_hfs.so -> libopencv_hfs.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_hfs.so.4.1 -> libopencv_hfs.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 70952 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_hfs.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_highgui.so -> libopencv_highgui.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_highgui.so.4.1 -> libopencv_highgui.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 56780 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_highgui.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_imgcodecs.so -> libopencv_imgcodecs.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 28 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_imgcodecs.so.4.1 -> libopencv_imgcodecs.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 1319500 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_imgcodecs.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_img_hash.so -> libopencv_img_hash.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_img_hash.so.4.1 -> libopencv_img_hash.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 90664 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_img_hash.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_imgproc.so -> libopencv_imgproc.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_imgproc.so.4.1 -> libopencv_imgproc.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 3234576 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_imgproc.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 32 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_line_descriptor.so -> libopencv_line_descriptor.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 34 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_line_descriptor.so.4.1 -> libopencv_line_descriptor.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 148400 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_line_descriptor.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 19 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ml.so -> libopencv_ml.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 21 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ml.so.4.1 -> libopencv_ml.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 492136 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ml.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_objdetect.so -> libopencv_objdetect.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 28 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_objdetect.so.4.1 -> libopencv_objdetect.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 376924 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_objdetect.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_optflow.so -> libopencv_optflow.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_optflow.so.4.1 -> libopencv_optflow.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 330192 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_optflow.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 33 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_phase_unwrapping.so -> libopencv_phase_unwrapping.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 35 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_phase_unwrapping.so.4.1 -> libopencv_phase_unwrapping.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 49076 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_phase_unwrapping.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_photo.so -> libopencv_photo.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_photo.so.4.1 -> libopencv_photo.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 556112 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_photo.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 21 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_plot.so -> libopencv_plot.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_plot.so.4.1 -> libopencv_plot.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 35076 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_plot.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_quality.so -> libopencv_quality.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_quality.so.4.1 -> libopencv_quality.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 93180 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_quality.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 20 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_reg.so -> libopencv_reg.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_reg.so.4.1 -> libopencv_reg.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 103476 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_reg.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 21 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_rgbd.so -> libopencv_rgbd.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_rgbd.so.4.1 -> libopencv_rgbd.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 457640 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_rgbd.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_saliency.so -> libopencv_saliency.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_saliency.so.4.1 -> libopencv_saliency.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 129096 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_saliency.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_shape.so -> libopencv_shape.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_shape.so.4.1 -> libopencv_shape.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 147432 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_shape.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_stereo.so -> libopencv_stereo.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_stereo.so.4.1 -> libopencv_stereo.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 144296 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_stereo.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_stitching.so -> libopencv_stitching.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 28 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_stitching.so.4.1 -> libopencv_stitching.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 612800 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_stitching.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 33 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_structured_light.so -> libopencv_structured_light.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 35 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_structured_light.so.4.1 -> libopencv_structured_light.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 83148 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_structured_light.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_superres.so -> libopencv_superres.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_superres.so.4.1 -> libopencv_superres.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 139196 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_superres.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 33 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_surface_matching.so -> libopencv_surface_matching.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 35 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_surface_matching.so.4.1 -> libopencv_surface_matching.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 271900 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_surface_matching.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 21 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_text.so -> libopencv_text.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_text.so.4.1 -> libopencv_text.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 331532 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_text.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_tracking.so -> libopencv_tracking.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_tracking.so.4.1 -> libopencv_tracking.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 1924132 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_tracking.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_videoio.so -> libopencv_videoio.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_videoio.so.4.1 -> libopencv_videoio.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 216328 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_videoio.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 22 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_video.so -> libopencv_video.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 24 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_video.so.4.1 -> libopencv_video.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 341892 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_video.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 26 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_videostab.so -> libopencv_videostab.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 28 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_videostab.so.4.1 -> libopencv_videostab.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 222960 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_videostab.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 28 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xfeatures2d.so -> libopencv_xfeatures2d.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 30 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xfeatures2d.so.4.1 -> libopencv_xfeatures2d.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 2537544 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xfeatures2d.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ximgproc.so -> libopencv_ximgproc.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ximgproc.so.4.1 -> libopencv_ximgproc.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 915108 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_ximgproc.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 27 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xobjdetect.so -> libopencv_xobjdetect.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 29 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xobjdetect.so.4.1 -> libopencv_xobjdetect.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 75184 Mar 16 02:08 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xobjdetect.so.4.1.0
lrwxrwxrwx 1 ubuntu ubuntu 23 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xphoto.so -> libopencv_xphoto.so.4.1
lrwxrwxrwx 1 ubuntu ubuntu 25 Mar 16 02:09 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xphoto.so.4.1 -> libopencv_xphoto.so.4.1.0
-rw-r--r-- 1 ubuntu ubuntu 214032 Mar 16 02:07 /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/lib/libopencv_xphoto.so.4.1.0

这是头文件信息：
ubuntu@ubuntu1804:~/tina-d1-h/package/camera$ ls /home/ubuntu/tina-d1-h/out/t113-100ask/staging_dir/target/usr/include/opencv4/opencv2
aruco core.hpp flann.hpp highgui.hpp objdetect quality stitching tracking.hpp ximgproc
aruco.hpp cvconfig.h freetype.hpp imgcodecs objdetect.hpp quality.hpp stitching.hpp video ximgproc.hpp
bgsegm.hpp datasets fuzzy imgcodecs.hpp opencv.hpp reg structured_light video.hpp xobjdetect.hpp
bioinspired dnn fuzzy.hpp img_hash opencv_modules.hpp rgbd structured_light.hpp videoio xphoto
bioinspired.hpp dnn.hpp gapi img_hash.hpp optflow rgbd.hpp superres videoio.hpp xphoto.hpp
calib3d dpm.hpp gapi.hpp imgproc optflow.hpp saliency superres.hpp videostab
calib3d.hpp face haarcascade_frontalface_default.xml imgproc.hpp phase_unwrapping saliency.hpp surface_matching videostab.hpp
ccalib face.hpp hdf line_descriptor phase_unwrapping.hpp shape surface_matching.hpp viz
ccalib.hpp features2d hdf.hpp line_descriptor.hpp photo shape.hpp text viz.hpp
core features2d.hpp hfs.hpp ml photo.hpp stereo text.hpp xfeatures2d
core_detect.hpp flann highgui ml.hpp plot.hpp stereo.hpp tracking xfeatures2d.hpp

这是报错信息：

camera文件夹下Makefile文件信息：
include $(TOPDIR)/rules.mk
include $(BUILD_DIR)/package.mk

PKG_NAME:=camera_face
PKG_RELEASE:=1

PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
SRC_CODE_DIR := ./src/

define Package/$(PKG_NAME)
SECTION:=utils
CATEGORY:=Utilities
TITLE:=Camera Face Detection Tool
DEPENDS:=+libjpeg +opencv
endef

define Package/$(PKG_NAME)/description
A program demonstrating face detection via camera.
endef

define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) -r ./src/* $(PKG_BUILD_DIR)/
endef

define Build/Compile
$(MAKE) -C $(PKG_BUILD_DIR)/
ARCH="$(TARGET_ARCH)"
AR="$(TARGET_AR)"
CC="$(TARGET_CXX)"
CFLAGS="$(TARGET_CFLAGS) $(shell pkg-config --cflags opencv4)"
LDFLAGS="$(TARGET_LDFLAGS) $(shell pkg-config --libs opencv4) -ljpeg -lpthread -lstdc++ -lstdc++fs"

endef

define Package/camera_face/install
$(INSTALL_DIR) $(1)/usr/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/camera_face $(1)/usr/bin
endef

$(eval $(call BuildPackage,$(PKG_NAME)))
camera文件夹下src文件夹下的Makefile文件信息如下：
camera_face: camera_face.o
arm-openwrt-linux-g++ camera_face.o -o camera_face
$(shell pkg-config --cflags --libs opencv4)
-ljpeg -lpthread -lstdc++ -std=c++11

camera_face.o: camera_face.cpp
arm-openwrt-linux-g++ -c camera_face.cpp -std=c++11 $(shell pkg-config --cflags opencv4)

clean:
rm -f *.o camera_face
不知道为什么连不上库，指定路径都不行！

@q1099009839
最终是成了，给后学者我的配置内容 注意最下面有关UVC的不要勾选，因为基于linux5.4里没有buf2相关的内容。还有在配置下内核使用make kernel_menuconfig去看一下UVC的相关设置，一定要在板子的dev下显示video0和video1才行

@q1099009839 这个错误为什么会出现呢？我看了一下，因为linux5.4的v4l2_core里没有这个文件了，可能是更新了，而linux4.1里有这个文件，证明sunxi有关代码适配内核过老，这怎么解决呢？

@q1099009839 还是不对，就是linux内核和全志不匹配，但你说适用linux5.4根本不适用，服了

@q1099009839 自己回一下，找到问题所在，被编译至内核去了，但我在config里设置的是m，但不知道为什么还是进内核去了，最后改的video.mk里面的相关代码，删除了v4l2_common.ko和buffer的内容，我查到这两个都被编译至内核了

使用UVC协议摄像头，配置video_support如图1所示。
配置完成后，进行编译，发现显示v4l2-common.ko丢失，网络上查找也没有解决方法，这是什么原因造成的呢？ makefile文件也查看了，有v4l2-common.o生成，# SPDX-License-Identifier: GPL-2.0

Makefile for the V4L2 core

tuner-objs := tuner-core.o

videodev-objs := v4l2-dev.o v4l2-ioctl.o v4l2-device.o v4l2-fh.o
v4l2-event.o v4l2-ctrls.o v4l2-subdev.o v4l2-clk.o
v4l2-async.o v4l2-common.o
videodev-$(CONFIG_COMPAT) += v4l2-compat-ioctl32.o
videodev-$(CONFIG_TRACEPOINTS) += v4l2-trace.o
videodev-$(CONFIG_MEDIA_CONTROLLER) += v4l2-mc.o
videodev-$(CONFIG_SPI) += v4l2-spi.o
videodev-$(CONFIG_VIDEO_V4L2_I2C) += v4l2-i2c.o

obj-$(CONFIG_V4L2_FWNODE) += v4l2-fwnode.o
obj-$(CONFIG_VIDEO_V4L2) += videodev.o
obj-$(CONFIG_VIDEO_V4L2) += v4l2-dv-timings.o

obj-$(CONFIG_VIDEO_TUNER) += tuner.o

obj-$(CONFIG_V4L2_MEM2MEM_DEV) += v4l2-mem2mem.o
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obj-$(CONFIG_V4L2_FLASH_LED_CLASS) += v4l2-flash-led-class.o

obj-$(CONFIG_VIDEOBUF_GEN) += videobuf-core.o
obj-$(CONFIG_VIDEOBUF_DMA_SG) += videobuf-dma-sg.o
obj-$(CONFIG_VIDEOBUF_DMA_CONTIG) += videobuf-dma-contig.o
obj-$(CONFIG_VIDEOBUF_VMALLOC) += videobuf-vmalloc.o

ccflags-y += -I$(srctree)/drivers/media/dvb-frontends
ccflags-y += -I$(srctree)/drivers/media/tuners
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这是makefile的内容