/usr/lib/x86_64-linux-gnu/pkgconfig/wayland-server.pc is in libwayland-dev 0.85.0-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
Name: Wayland Server
Description: Server side implementation of the Wayland protocol
Version: 0.85
Cflags: -I${includedir}
Libs: -L${libdir} -lwayland-server
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