Ffmplay is not generated during the compilation and installation of ffmpeg source code

1. ubuntu 16.04 And above versions shall be installed sdl2, Lower version installation sdl1.2
   sudo apt-get install libsdl2-dev

2. To configure
   ./configure --prefix=/usr/local/ffmpeg --enable-debug=3 --enable-shared --disable-static
   Output information has ffmplay

   Programs:
   ffmpeg                  ffplay                  ffprobe
   

3. compile , install , Add environment variables
   make -j 4
sudo make install

4. Inquire about ffmpeg edition
   ffmpeg -version

   ffmpeg version N-101260-gd7f10b2 Copyright (c) 2000-2021 the FFmpeg developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
   configuration: --prefix=/usr/local/ffmpeg --enable-debug=3 --enable-shared --disable-static
   libavutil      56. 66.100 / 56. 66.100
   libavcodec     58.125.100 / 58.125.100
   libavformat    58. 68.100 / 58. 68.100
   libavdevice    58. 12.100 / 58. 12.100
   libavfilter     7.107.100 /  7.107.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   

• If prompt libavdevice.so.58: cannot open shared object file: No such file or directory, Reference resources Installation on server ffmpeg Post error reporting and Solutions libavdevice.so.58: cannot open shared object file: No such file or directory