[FFmpeg-trac] #11635(avutil:new): libavutil/pca.[hc] are unused

[FFmpeg]

#11635: libavutil/pca.[hc] are unused
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             Reporter:  francoisk  |                     Type:  defect
               Status:  new        |                 Priority:  normal
            Component:  avutil     |                  Version:  git-master
             Keywords:             |               Blocked By:
             Blocking:             |  Reproduced by developer:  0
Analyzed by developer:  0          |
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 These files were deleted and removed from the makefile in commit
 cfa68a3381a7f67eed75bc503e75aab076fad3c6 ("Remove unused, never built
 libavutil/pca.[ch]"). This was later undone, but only partially: the files
 were added back but not re-included in the build in the makefile.

 The current state is that `libavutil/pca.h` is only referenced by
 `libavutil/pca.c` and `libavutil/pca.c` is only referenced from
 `libavutil/tests/pca.c` so it's not being built into the library but it is
 getting tested.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11635>
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