[MacPorts] #69522: Problem to have acces to the libmpv in MacOs

[MacPorts]

#69522: Problem to have acces to the libmpv in MacOs
-----------------------------+--------------------
 Reporter:  gabrielzschmitz  |      Owner:  (none)
     Type:  defect           |     Status:  new
 Priority:  High             |  Milestone:
Component:  ports            |    Version:  2.9.1
 Keywords:  libmpv library   |       Port:  mpv
-----------------------------+--------------------
 Can't really include the mpv library at any .c file (even adding the
 +libmpv variant)! Here's a real exemple:

 ```shell
 $ sudo make install
 cc -std=c99 -Wall -Wextra -pedantic -Wunused-result -Wno-unused-variable
 -Os -D_POSIX_C_SOURCE -DTOMATONOISE=\"/usr/local/bin/tomatonoise\"
 -DLOGPREFIX=\".local/share/tomato\"
 -DLOGFILE=\".local/share/tomato/tomato.log\"
 -DTMPFILE=\".local/share/tomato/tmp.log\"
 -DTIMERFILE=\".local/share/tomato/time.log\"
 -DNOTEPADFILE=\".local/share/tomato/notepad.log\" -I/usr/local/include
 -L/usr/local/lib  tomatonoise.c  `pkg-config --libs ncursesw mpv` -o
 tomatonoise
 tomatonoise.c:1:10: fatal error: 'mpv/client.h' file not found
 #include <mpv/client.h>
          ^~~~~~~~~~~~~~
 1 error generated.
 make: *** [tomatonoise] Error 1
 Error: Process completed with exit code 2.
 ```

-- 
Ticket URL: <https://trac.macports.org/ticket/69522>
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