/usr/lib/x86_64-linux-gnu/pkgconfig/libmatekbdui.pc is in libmatekbd-dev 1.7.1.is.1.6.2-0ubuntu1.
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 11 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: libmatekbd
Description: MATE keyboard shared library
Version: 1.6.2
Requires: libmatekbd = 1.6.2
Libs: -L${libdir} -lmatekbdui
Cflags: -I${includedir}
|