Using 3rd-party lib qr-code shows "undefined reference"-error

Question

Using 3rd-party lib qr-code shows "undefined reference"-error

ChrisPasda opened this issue 2 years ago · 6 comments

I am trying to use the qr-code feature with this template for the fb0 in c and i activated this feature in the lv_conf.h. When i am using some qr-related functions like lv_qrcode_create() i get an "undefined reference"-error while compiling with make. When i am clicking on the function my IDE finds the correct file in src/libs/qrcode.

Thank you very much in advance and with best regards,

Chris

Answer 1 · 2022-10-12T08:33:40.000Z

Do you build the project with Eclipse or Make?

Answer 2 · 2022-10-12T08:44:22.000Z

Hey, i build it with make in VS Code. Maybe that could be the issue?

Thanks for the response.

Answer 3 · 2022-10-13T09:54:17.000Z

I've checked that the make file includes all C files from the extradirectory.

Please modify lv_qrcode.c like

#error "before #if"
#include "lv_qrcode.h"
#if LV_USE_QRCODE
#error "after #if"

It will show if the file is being compiled or not.

Answer 4 · 2022-10-13T10:11:36.000Z

I did that and that was my outcome:

Thank you very much for the response and best regards

Answer 5 · 2022-10-13T10:22:05.000Z

Okay, i dont know what caused the problem but after restarting my VM everyhting is working now.

Thank you very much !

Answer 6 · 2022-10-13T10:27:02.000Z

Next time I suggest trying make clean too.