I would like to use functions from the date_time and dk_buttons_and_leds libraries in an nRF91 application. I included the following lines in the application's prj.conf file:
CONFIG_DATE_TIME=y CONFIG_DK_LIBRARY=y
After clicking "Open nRF Connect SDK Project" in Segger Embedded Studio only the CONFIG_DK_LIBRARY=y setting can be found in the application's autoconf.h and .config files. When building the application, attempting to call functions from the date_time library gives an "undefined reference to" error.
Can I ask how to properly include the date_time library and other SDK libraries into an application?