/usr/ is in libgdl-3-dev 3.18.0-1.
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/usr/share/
/usr/share/gir-1.0/
/usr/share/gir-1.0/Gdl-3.gir
/usr/share/doc/
/usr/share/doc/libgdl-3-dev/
/usr/share/doc/libgdl-3-dev/copyright
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gdl-3.0.pc
/usr/include/
/usr/include/libgdl-3.0/
/usr/include/libgdl-3.0/gdl/
/usr/include/libgdl-3.0/gdl/gdl-dock-item.h
/usr/include/libgdl-3.0/gdl/gdl-dock-bar.h
/usr/include/libgdl-3.0/gdl/libgdltypebuiltins.h
/usr/include/libgdl-3.0/gdl/gdl-dock-placeholder.h
/usr/include/libgdl-3.0/gdl/gdl-dock.h
/usr/include/libgdl-3.0/gdl/gdl-dock-item-grip.h
/usr/include/libgdl-3.0/gdl/gdl-dock-object.h
/usr/include/libgdl-3.0/gdl/gdl.h
/usr/include/libgdl-3.0/gdl/gdl-dock-master.h
/usr/include/libgdl-3.0/gdl/gdl-dock-layout.h
/usr/share/doc/libgdl-3-dev/AUTHORS
/usr/share/doc/libgdl-3-dev/README
/usr/share/doc/libgdl-3-dev/NEWS.gz
/usr/share/doc/libgdl-3-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libgdl-3.so