build error occured in MA35D1_Linux_Applications/MA35D1_Integrated_Demo/Qt/MA35D1_DEMO

[dryworld]

I tried build MA35D1_Linux_Applications/MA35D1_Integrated_Demo/Qt/MA35D1_DEMO

error is followed, please let me know how can I fix it.

/home/drywo/ma35d1/output/host/bin/aarch64-nuvoton-linux-gnu-g++ -c -pipe -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os --sysroot=/home/drywo/ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot -std=gnu++11 -Wall -Wextra -D_REENTRANT -fPIC -DQT_DEPRECATED_WARNINGS -DQT_NO_DEBUG -DQT_MULTIMEDIAWIDGETS_LIB -DQT_MULTIMEDIA_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I../../../../ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot/usr/include/qt5 -I../../../../ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot/usr/include/qt5/QtMultimediaWidgets -I../../../../ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot/usr/include/qt5/QtMultimedia -I../../../../ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot/usr/include/qt5/QtWidgets -I../../../../ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot/usr/include/qt5/QtGui -I../../../../ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot/usr/include/qt5/QtNetwork -I../../../../ma35d1/output/host/aarch64-nuvoton-linux-gnu/sysroot/usr/include/qt5/QtCore -I. -I. -I../../../../ma35d1/output/host/mkspecs/devices/linux-buildroot-g++ -o dialog_cam.o dialog_cam.cpp
In file included from dialog_cam.h:16,
from dialog_cam.cpp:1:
draw.hpp:4:10: fatal error: opencv2/dnn.hpp: No such file or directory
4 | #include <opencv2/dnn.hpp>
| ^~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:1410: dialog_cam.o] Error 1

[ychuang3]

We just update the MA35D1_Integrated_Demo/README.txt, which explains how to compile it.