Re: [Rtftr-devel] error : symbol lookup error : undefined symbol: av_gcd

[Abhishek D. <the...@gm...>]

Hi,

On Fri, Apr 2, 2010 at 7:22 AM, Biswas Parajuli <bis...@gm...>wrote:

> Sorry for the late response. I repeated the installation with the suggested
> changes
>
> 1. On running 3.b in the INSTALL file I end up with this :
> */usr/bin/install: cannot stat
> `/home/biswas/Desktop/FaceRecognition/librariesForRTFTR/vigra1.6.0/doc/vigra/form*.png':
> No such file or directory
> *


This is not a problem as those missing PNG files are required to generate
the documentation for VIGRA. If you look at the output carefully, it will
say that the installation of library was successful. You can also verify
this by doing the usual "$ ls /usr/local/lib/libvigraimpex* ".

*
> *2. liboctave.so is present* :*
>
> # ls /usr/lib/octave-3.0.3/lib*
> /usr/lib/octave-3.0.3/libcruft.so
>  /usr/lib/octave-3.0.3/liboctave.so.3.0.3
> /usr/lib/octave-3.0.3/libcruft.so.3.0.3
> /usr/lib/octave-3.0.3/liboctinterp.so
> /usr/lib/octave-3.0.3/liboctave.so
>  /usr/lib/octave-3.0.3/liboctinterp.so.3.0.3
>
> 3. I replaced "rtftr/configure" with the one you suggested
>
>

> 4.Now it's a new error when running ./rtftr
>
> *./rtftr: symbol lookup error: /usr/lib/libavcodec.so.52: undefined
> symbol: av_gcd
> *
>
Ah, this is something related to the installation of ffmpeg. OpenCV uses
ffmpeg to read AVI files. I suggest you follow step 6 ad step 7 carefully.
It requires making changes to ffmpeg's source code.

I know that the whole installation procedure is very complication and this
is because we have used a lot of libraries. In future,we would definitely
aim to reduce the complexity of rtftr installation

Bye

-- 
Abhishek
http://www-users.cs.york.ac.uk/~abhishek/