/usr/lib/pkgconfig/mtdev.pc is in libmtdev-dev 1.1.0-2ubuntu1.
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 | prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
Name: mtdev
Description: Multitouch Protocol Translation Library
Version: 1.1.0
Libs: -L${libdir} -lmtdev
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