lib/pkgconfig/libpostproc.pc

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

Name: libpostproc
Description: FFmpeg post processing library
Version: 51.2.0
Requires:
Requires.private:
Conflicts:
Libs: -L${libdir} -lpostproc
Libs.private:
Cflags: -I${includedir}