Error compiling DLNA example

[mericidum]

Hello,
I am experimenting with ESP32_LyraT board.
I compiled most of the examples successfully, but DLNA example gives me the following error:

Code: Select all

$ make
Toolchain path: /opt/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
Toolchain version: crosstool-ng-1.22.0-80-g6c4433a5
Compiler version: 5.2.0
Python requirements from C:/msys32/home/Kluci/esp/esp-idf/requirements.txt are satisfied.

Project is not inside a git repository, will not use 'git describe' to determine PROJECT_VER.
App "dlna_example" version: 1
LD build/dlna_example.elf
C:/msys32/home/Kluci/esp/esp-adf/components/esp-adf-libs/esp_upnp/lib\libesp_upn     p.a(upnp.o):(.literal.upnp_serve_static_files+0xc): undefined reference to `httpd_resp_send_404'
C:/msys32/home/Kluci/esp/esp-adf/components/esp-adf-libs/esp_upnp/lib\libesp_upnp.a(upnp.o): In function `upnp_serve_static_files':
/Users/tuan/Projects/2018/espressif/tuanpm/esp-adf-internal/components/dlna_src/esp_upnp/upnp.c:138: undefined reference to `httpd_resp_send_404'
C:/msys32/home/Kluci/esp/esp-adf/components/esp-adf-libs/esp_upnp/lib\libesp_upnp.a(upnp_service.o): In function `upnp_soap_control_handle':
/Users/tuan/Projects/2018/espressif/tuanpm/esp-adf-internal/components/dlna_src/esp_upnp/upnp_service.c:593: undefined reference to `httpd_resp_send_404'
collect2.exe: error: ld returned 1 exit status
make: *** [C:/msys32/home/Kluci/esp/esp-idf/make/project.mk:483: /home/Kluci/esp/dlna/build/dlna_example.elf] Error 1

Please, note that there is no "tuan" user on my PC. (Kluci is OK).
Can you please help? I am mostly interested in DLNA...
Thanks!