prefix=/usr/local
exec_prefix=${prefix}
libdir=${prefix}/lib
includedir=${prefix}/include

Name: libavdevice
Description: FFmpeg device handling library
Version: 55.5.100
Requires: 
Requires.private: libavformat = 55.19.104
Conflicts:
Libs: -L${libdir} -lavdevice 
Libs.private: -lm -lz -lpsapi -ladvapi32 -lshell32
Cflags: -I${includedir}