Unable to build wpa2_enterprise example code on esp32

[rf.akram.karimi]

Hello everyone,
I am pretty new to ESP32 so apologies for very basic question.
I have successfully followed the steps to get "Hello_world" program flashed and running. I have seen its output on the monitor.
Now, I am trying to build the wpa2_enterprise example following the same procedure i.e.
1. Copying wpa2_enterprise folder in esp folder
2. make menu_config works fine
BUT
3. I get the following error while using "make flash" ...

Code: Select all

$ make flash
LD build/wpa2-enterprise.elf
d:/kaust_work/esp_development/esp-idf_setup/msys32/opt/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/5.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: cannot find -lulp
collect2.exe: error: ld returned 1 exit status
make: *** [D:/KAUST_Work/ESP_Development/ESP-IDF_Setup/msys32/home/karimim/esp32/esp-idf/make/project.mk:360: /home/karimim/esp32/wpa2_enterprise/build/wpa2-enterprise.elf] Error 1

I am using ESP_IDF for compilation and MSYS2 for make feature on windows OS.
Can anyone suggest what the problem is.

Thanks