新加的examples/yolov8.cpp未对c++98兼容

[wxtshr001]

error log | 日志或报错信息 | ログ

/home/wang/data/opensource/ncnn/examples/yolov8.cpp: In function ‘void parse_yolov8_detections(float*, float, int, int, int, int, int, std::vector&)’:
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:178:14: error: ‘row_ptr’ does not name a type
auto row_ptr = output.row(i).ptr();
^
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:179:14: error: ‘bboxes_ptr’ does not name a type
auto bboxes_ptr = row_ptr;
^
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:180:14: error: ‘scores_ptr’ does not name a type
auto scores_ptr = row_ptr + 4;
^
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:181:14: error: ‘max_s_ptr’ does not name a type
auto max_s_ptr = std::max_element(scores_ptr, scores_ptr + num_labels);
^
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:182:24: error: ‘max_s_ptr’ was not declared in this scope
float score = *max_s_ptr;
^
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:185:24: error: ‘bboxes_ptr’ was not declared in this scope
float x = *bboxes_ptr++;
^
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:201:40: error: ‘scores_ptr’ was not declared in this scope
object.label = max_s_ptr - scores_ptr;
^
/home/wang/data/opensource/ncnn/examples/yolov8.cpp:204:24: error: ‘class std::vector’ has no member named ‘emplace_back’
detections.emplace_back(object);
^
examples/CMakeFiles/yolov8.dir/build.make:75: recipe for target 'examples/CMakeFiles/yolov8.dir/yolov8.cpp.o' failed
make[2]: *** [examples/CMakeFiles/yolov8.dir/yolov8.cpp.o] Error 1
CMakeFiles/Makefile2:377: recipe for target 'examples/CMakeFiles/yolov8.dir/all' failed
make[1]: *** [examples/CMakeFiles/yolov8.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

context | 编译/运行环境 | バックグラウンド

opencv version: 2.4.13

how to reproduce | 复现步骤 | 再現方法

cmake ..;make -j4

more | 其他 | その他

examples里只有在OpenCV_VERSION_MAJOR > 3的时候才会启用c++11 standard
auto和emplace_back都是c++11才开始支持