[FFmpeg-trac] #7333(build system:new): dirac decoder missing (I)DCT tables

[FFmpeg]

#7333: dirac decoder missing (I)DCT tables
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             Reporter:  mcerveny     |                     Type:  defect
               Status:  new          |                 Priority:  minor
            Component:  build        |                  Version:  git-
  system                             |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Summary of the bug:
 Enable only dirac decoders and no encoders leads to link errors.
 Does dirac decoder depend on mpeg video encoder ?
 If yes, please compile and link ./libavcodec/aandcttab.c (I)DCT tables

 How to reproduce:
 {{{
 # grep dirac_decoder configure
 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
 # configure --disable-everything --enable-decoder=dirac ...
 ...
 # ## try to link program with FFmpeg
 libavcodec.so: undefined reference to `ff_inv_aanscales'
 libavcodec.so: undefined reference to `ff_aanscales'
 # readelf -s libav*.so libsw*.so | egrep 'ff_inv_aanscales|ff_aanscales'
    150: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT  UND ff_aanscales
    170: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT  UND
 ff_inv_aanscales
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7333>
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