The problem of undefined reference std::__cxx11::basic_stringstream in labC

[ZheChen-Bill]

Hi, we are conducting labC Vision (isppipeline_HDR) and encounter the problems of undefined reference.
We follow the instruction in discussion #43 solve the directory of openCV library.
We try to CSIM, CSYN and COSIM the gaincontrol project in the L1 function.
Then, we have the error code shown below. It shows we have the problem of undefined reference of openCV library.

Therefore, we add the linker in the vitis_hls setting (project/project settings/simulation).
Add the used opencv module to the linker flags.
(-lopencv_videoio -lopencv_imgcodecs -lopencv_core -lopencv_imgproc -lopencv_features2d -lopencv_flann -lopencv_video -lopencv_calib3d)


I think we solve the problem of undefined reference of openCV library.
However, we have another undefined reference problem.

We try to modify the properties setting for the gaincontrol.prj.
Choose ISO C++11(-std =c++11) as the language standard.

After change the settings, the error messages are still the same.
We wonder how to fix out this problem.