Build error: C++ compiler produced errors.

function deploy_tracing_raspberry_pi() %#codegen
persistent yolov3Detector;
if isempty(yolov3Detector)
    yolov3Detector = coder.loadDeepLearningNetwork('yolov3Detector.mat');
end
mypi = raspi('192.168.18.233','pi','raspberry');
cam = cameraboard(mypi,'Resolution','160x120');
s = servo(mypi, 18, 'MinPulseDuration', 1e-3, 'MaxPulseDuration', 2e-3);
k = servo(mypi, 23, 'MinPulseDuration', 1e-3, 'MaxPulseDuration', 2e-3);
n = 90;    
m = 90;    
u = 2;     
t = 0;
writePosition(s, n);   
writePosition(k, m);    
% Main loop
start = tic;   
while t < 10000
    t = t + 1;
    %Capture image cameraboard
    img = snapshot(cam);
    elapsedTime = toc(start);
    %Process frames at every 0.25 seconds
    if elapsedTime > 0.25
    end    
    % Detect  
    [bboxes,scores] = detect(yolov3Detector,img,'Threshold',0.6);
    if ~isempty(bboxes)
        img = insertObjectAnnotation(img,'rectangle',bboxes,scores); 
        [hI,wI,~] = size(img);            
        a = find(scores==max(scores));
        x = bboxes(a,1);  
        y = bboxes(a,2);   
        w = bboxes(a,3);  
        h = bboxes(a,4);   
        
        if (wI/2 - (x + w/2) < 0)
            n=n+u;
            if n>=170
                n = 150;
                writePosition(s,n);
            else   
                writePosition(s,n);
            end
        end
        if (wI/2 - (x + w/2) > 0)
            n=n-u;  
            if n<=10
                n = 20;
                writePosition(s,n);
            else   
                writePosition(s,n);
            end
        end
        
        if (hI/2 - (y + h/2) >0)
            m=m+u;
            if m>=170
                m = 150;
                writePosition(k,m);
            else   
                writePosition(k,m);
            end
        end
        if (hI/2 - (y + h/2) < 0)
            m=m-u;  
            if m<=10
                m = 20;
                writePosition(k,m);
            else   
                writePosition(k,m);
            end    
            
        end
    end   
    
    displayImage(mypi,img);
    drawnow  
end

%%
%when running the deploy script, I get an error    
%Error executing command "touch -c /home/pi/MATLAB_ws/R2024a/C/Meruzhan/Yolov3/codegen/exe/deploy_tracing_raspberry_pi/*.*;make  -j$(($(nproc)+1)) -Otarget -f deploy_tracing_raspberry_pi_rtw.mk all MATLAB_WORKSPACE="/home/pi/MATLAB_ws/R2024a" LINUX_TARGET_LIBS_MACRO="-lSDL -lmmal -lmmal_core -lmmal_util -lmmal_vc_client -lvcos -lbcm_host" -C /home/pi/MATLAB_ws/R2024a/C/Meruzhan/Yolov3/codegen/exe/deploy_tracing_raspberry_pi LC_ALL=C".

Answer 1

[Hitesh]

Hi Meruzhan,

The error message you're encountering indicates that the problem is with the deployment process of the MATLAB code onto the Raspberry Pi. Kindly ensure the following points as these are potential root cause of this error, such as incorrect paths, missing libraries, or configuration problems.

1. Check File Paths: Kindly ensure that all file paths in the script are correct and accessible. The error message references paths "/home/pi/MATLAB_ws/R2024a/C/Meruzhan/Yolov3/codegen/exe/deploy_tracing_raspberry_pi". Make sure these directories exist and are writable that is having write access.
2. Library Dependencies: The error mentions that libraries like "-lSDL", "-lmmal" and "-lmmal_core". Verify that these libraries are installed on the Raspberry Pi. You need to install these missing libraries using "apt-get".

If the issue still persists, it would be best handled with MathWorks tech support. Could you submit a technical support request?