Hello krcenov,
Welcome to the wolfSSL Forums!
I see you are specifying `-DWOLFSSL_USER_SETTINGS` in the CFLAGS. But you are also adding settings using ./configure. These could be conflicting. We recommend using either the `user_settings.h` header, or `./configure` and generating the options.h header.
Are you including the settings header before any other wolfSSL includes?
Check out our examples repository:
https://github.com/wolfSSL/wolfssl-examples
Specifically:
https://github.com/wolfSSL/wolfssl-exam … callback.c
Can you tell us a bit about yourself and the project you are working on for our support records? Feel free to send an email to support@wolfssl.com for a more private correspondence.
Thanks,
Eric - wolfSSL Support