video viewer error

[vaseeece]

When I try to make the video-viewer in utils after installing dependencies as mentioned in utils readme it shows error and not getting build.

please help out...

error details are given below...

root@DietPi:/home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils# make video-viewer make -C ../lib make[1]: Entering directory '/home/dietpi/RGB_matrix/rpi-rgb-led-matrix/lib' make[1]: Leaving directory '/home/dietpi/RGB_matrix/rpi-rgb-led-matrix/lib' g++ -Wall -O3 -g -Wextra -Wno-unused-parameter -D_FILE_OFFSET_BITS=64 video-viewer.o -o video-viewer -L../lib -lrgbmatrix -lrt -lm -lpthread pkg-config --cflags --libs libavcodec libavformat libswscale libavutil /bin/sh: 1: pkg-config: not found /usr/bin/ld: video-viewer.o: in function main': /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:157: undefined reference toav_register_all' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:158: undefined reference to avformat_network_init' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:161: undefined reference toavformat_open_input' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:165: undefined reference to avformat_find_stream_info' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:211: undefined reference toavcodec_find_decoder' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:217: undefined reference to avcodec_alloc_context3' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:218: undefined reference toavcodec_copy_context' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:224: undefined reference to avcodec_open2' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:228: undefined reference toav_frame_alloc' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:231: undefined reference to av_frame_alloc' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:236: undefined reference toavpicture_get_size' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:238: undefined reference to av_malloc' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:243: undefined reference toavpicture_fill' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:247: undefined reference to sws_getContext' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:277: undefined reference toav_read_frame' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:288: undefined reference to avcodec_decode_video2' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:312: undefined reference toav_free_packet' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:325: undefined reference to av_free' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:326: undefined reference toav_frame_free' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:329: undefined reference to av_frame_free' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:332: undefined reference toavcodec_close' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:333: undefined reference to avcodec_close' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:336: undefined reference toavformat_close_input' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:293: undefined reference to sws_scale' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:273: undefined reference toav_seek_frame' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:274: undefined reference to avcodec_flush_buffers' /usr/bin/ld: /home/dietpi/RGB_matrix/rpi-rgb-led-matrix/utils/video-viewer.cc:170: undefined reference toav_dump_format' collect2: error: ld returned 1 exit status make: *** [Makefile:31: video-viewer] Error 1

[carlosalaniz]

+1

[hzeller]

The error message sais in the beginning that it didn't find pkg-config. So next step would be to install pkg-config.

sudo apt-get install pkg-config

[hzeller]

(I presume you did install the packages needed as described in the README ?)

[rijotech]

I'm facing similar issue when compiling sudo make video-viewer g++ -I../include -Wall -O3 -g -Wextra -Wno-unused-parameter -D_FILE_OFFSET_BITS=64 -Wno-deprecated-declarations -c -o video-viewer.o video-viewer.cc make -C ../lib make[1]: Entering directory '/home/pi/rpi-rgb-led-matrix/lib' make[1]: Leaving directory '/home/pi/rpi-rgb-led-matrix/lib' g++ -Wall -O3 -g -Wextra -Wno-unused-parameter -D_FILE_OFFSET_BITS=64 video-viewer.o -o video-viewer -L../lib -lrgbmatrix -lrt -lm -lpthread pkg-config --cflags --libs libav codec libavformat libswscale libavutil /usr/bin/ld: /usr/lib/gcc/arm-linux-gnueabihf/8/../../../arm-linux-gnueabihf/libavcodec.so: undefined reference to `bcm_host_is_fkms_active' collect2: error: ld returned 1 exit status make: *** [Makefile:31: video-viewer] Error 1

And I did installed all required packages.

[rijotech]

Found the solution it was relate to the kennel, just perform an upgrade and try again. sudo apt update && sudo apt upgrade