[Libav-user] Setting up ffmpeg avcodec wiht Qt Linux undefined reference

[buffgix at mailbox.org]

Ok,

"$ make doc/examples/decode_video"

compiled successfully.

The following version of gcc is currently installed:
gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)


Using:

extern "C" {
    #include <libavcodec/avcodec.h>
}

as mentioned in my first email leads to another error:

/usr/bin/x86_64-linux-gnu-ld: /home/user/ffmpeg_build/lib//libavcodec.a(flashsv.o): undefined reference to symbol 'inflateEnd'
Makefile:252: recipe for target 'FFmpegDev' failed
//lib/x86_64-linux-gnu/libz.so.1: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make: *** [FFmpegDev] Error 1
13:52:06: The process "/usr/bin/make" exited with code 2.

Is this information useful?

Greetings


> Carl Eugen Hoyos <ceffmpeg at gmail.com> hat am 30. April 2018 um 20:00 geschrieben:
> 
> 
> 2018-04-30 16:47 GMT+02:00, buffgix at mailbox.org <buffgix at mailbox.org>:
> 
> > im trying to get the example from
> > https://www.ffmpeg.org/doxygen/trunk/decode_video_8c-example.html
> > running.
> 
> Did you test the following?
> $ make doc/examples/decode_video
> 
> Carl Eugen
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