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LVGL book 1.3 compile problem

Q&A Forum › Category: ESP32 › LVGL book 1.3 compile problem
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John Bounds asked 8 months ago

Was up to Module 7 in Learn_LVGL_Build_GUIs_for_ESP32_Projects_V1_1, no problems. Just did the update to eBook 1.3 and got the newer libraries, put the two .h files and two folders where they belong, but now getting:
1 | #include “../../src/themes/lv_theme_private.h”
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
exit status 1
Web search on “not finding lv_theme_private.h” shows others with same problem. The missing file is there but not being found.
Solution?
Thanks,
-John B.

3 Answers
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John Bounds answered 8 months ago

Went back to LVGL 9.1.0, keeping all the other updates the same, and now it works fine.
-John B.

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Rui Santos Staff answered 8 months ago

Hello John,

  • Can you try the following? Update LVGL library to version 9.2.

Open the lv_conf.h file inside the libraries folder and go to line 388:

#define LV_USE_PRIVATE_API 1

Change it to 0:

#define LV_USE_PRIVATE_API 0

Then, try to compile again. Does it work now?

  • If those instructions still don’t work, I recommend deleting the whole LVGL library and then re-installing it. Because if that file is missing it looks like something failed while upgrading the library version
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Rui Santos Staff answered 8 months ago

Hello John!

Please ignore the previous comment above.

We had to release yet another update (sorry about that). There’s currently an issue with some demos/examples. You can download eBook version 1.4:

Please re-install LVGL version 9.2. While installing LVGL do NOT move the examples/demos folders inside the src folder. This will solve that error messsage.