Compile problem for Raspberry Pi 3 with opencv

[SGaist]

Hi and welcome to devnet,

Are you developing on the RPi3 directly ? Or are you cross-compiling ?

[WillRpi]

I installed Qt and Qtcreator by "apt-get install qt5-default/qtcreator". Qtcreator run successfully without opencv.

[WillRpi]

@SGaist Is it better if I reinstall QT by this guide: https://wiki.qt.io/Raspberry_Pi_Beginners_Guide ?

[SGaist]

You didn't answer my question: are you developing directly on the RPi3 ?

[WillRpi]

@SGaist Yes =D sr I'm a little bit confused

[SGaist]

Good then next question, did you build OpenCV yourself ? Or did you install the one from the distribution you have on your Pi ?

[WillRpi]

@SGaist I built OpenCV due to this guide: http://www.pyimagesearch.com/2016/04/18/install-guide-raspberry-pi-3-raspbian-jessie-opencv-3/

[SGaist]

You are missing -lopencv_imgcodecs in your .pro file.

[WillRpi]

@SGaist It works, thank you so much. Aw I didnt focus on this mistake.

[SGaist]

You're welcome !

Since you have it working now, please mark the thread as solved using the "Topic Tools" button so that other forum users may know a solution has been found :)