I have a linking problem while compiling opencv-3.1.0 for my ARM device(omapl138,arm926ej-s) on ubuntu16.04 using arm-linux-gnueabi-g+±5(arm-linux-gnueabi-gcc-5).
I read some tutorials about reading videos from files provided by the opencv.org,which requires compiling the opencv source code with ffmpeg(WITH_FFMPEG=on).
However,errors occur about linking some ffmpeg libraries.
Actually,those libraris do exist in the system(part of them posted below).
I tried to copy those libraries to the /usr/local/lib and the compiling is successful.But when compiling the application,another linking problem occured(those copied are 64-bit version).
Then I compiled the FFMPEG-2.8.17 with the souce code(using the cross-compile toolchain above). Well,names of libraries(should be 32 bit i guess) I got didn’t match what linker required,so I tried to modified the libraries’ names and did the copy job again.Opencv compiling also succeeded.But when compiling the application,different errors occured.
/usr/local/lib/libavformat-ffmpeg.a(dvenc.o):In function 'dv_init_mux' /home/rookie/FFmpeg-n2.8.17/libavformat/dvenc.c:340: undefined reference to 'av_dv_codec_profile2'
(I only post part of the errors)
I guess the way that I compiled FFMPEG on my own didn’t work either.So how to solve this linking problem without compiling FFMPEG on my own?
I’m a rookie about opencv.This is my first time to ask a question here.Thanks for your patience!