/usr/lib/ is in libglib2.0-dev 2.32.1-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libgio-2.0.a
/usr/lib/x86_64-linux-gnu/libglib-2.0.a
/usr/lib/x86_64-linux-gnu/libgmodule-2.0.a
/usr/lib/x86_64-linux-gnu/libgobject-2.0.a
/usr/lib/x86_64-linux-gnu/libgthread-2.0.a
/usr/lib/x86_64-linux-gnu/glib-2.0/
/usr/lib/x86_64-linux-gnu/glib-2.0/include/
/usr/lib/x86_64-linux-gnu/glib-2.0/include/glibconfig.h
/usr/lib/x86_64-linux-gnu/gdbus-2.0/
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/__init__.py
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/codegen.py
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/codegen_docbook.py
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/codegen_main.py
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/config.py
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/dbustypes.py
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/parser.py
/usr/lib/x86_64-linux-gnu/gdbus-2.0/codegen/utils.py
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/glib-2.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gobject-2.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gmodule-2.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gmodule-export-2.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gmodule-no-export-2.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gthread-2.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gio-2.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gio-unix-2.0.pc
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so
/usr/lib/x86_64-linux-gnu/libgmodule-2.0.so
/usr/lib/x86_64-linux-gnu/libgthread-2.0.so
/usr/lib/x86_64-linux-gnu/libgio-2.0.so
/usr/lib/x86_64-linux-gnu/libglib-2.0.so