[FFmpeg-trac] #4197(build system:new): libspeex detection is broken on systems without pkg-config

[FFmpeg]

#4197: libspeex detection is broken on systems without pkg-config
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             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  build
              Version:  git-master   |  system
             Keywords:  libspeex     |               Resolution:
  regression                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by cehoyos):

 (I did not want to imply it wasn't intentional, just that I had forgotten
 about this.)

 This is a (very) bad regression and we should do the same as for x264.
 I will try to produce a patch this weekend.

 Several operating systems don't install pkg-config by default.
 Additionally, I believe it is very useful to link an external library
 without installing it first.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4197#comment:3>
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