[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
-------------------------------------+-------------------------------------
             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):

 Replying to [comment:4 Cigaes]:
 > Replying to [comment:3 cehoyos]:
 > > This is a (very) bad regression and we should do the same as for x264.
 >
 > I strongly object to that. It makes the build system slower and harder
 to maintain for no benefit.

 I am willing to take the burden.

 > > Several operating systems don't install pkg-config by default.
 >
 > Several operating systems don't install a C compiler by default. And
 most operating systems do not install the development files for the
 libraries by default.

 What I meant was: On several operating systems, after you install the
 compiler and the necessary libraries and headers, there is no pkg-config
 and this configuration was supported by FFmpeg for many years. Removing
 this support means introducing a regression.

 > If people need pkg-config, they install it, just as the libraries they
 want and yasm and texi2html and...

 Not everyone who wants to compile FFmpeg can install on the target system.

 > > Additionally, I believe it is very useful to link an external library
 without installing it first.
 >
 > Please share the basis for that belief.

 You misunderstand: When I test, I never install the libraries but always
 link them from the build directory. (The basis is just my workflow for
 testing FFmpeg because of user reports that include using external
 libraries.)

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Ticket URL: <https://trac.ffmpeg.org/ticket/4197#comment:5>
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