/usr/lib/ is in libgstreamer1.0-dev 1.8.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-check-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-base-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-controller-1.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gstreamer-net-1.0.pc
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/include/
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/include/gst/
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/include/gst/gstconfig.h
/usr/lib/x86_64-linux-gnu/libgstbase-1.0.so
/usr/lib/x86_64-linux-gnu/libgstcontroller-1.0.so
/usr/lib/x86_64-linux-gnu/libgstcheck-1.0.so
/usr/lib/x86_64-linux-gnu/libgstnet-1.0.so
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so