/usr/lib/x86_64-linux-gnu/ is in libwxgtk2.8-dev 2.8.12.1-6ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/wx/
/usr/lib/x86_64-linux-gnu/wx/include/
/usr/lib/x86_64-linux-gnu/wx/include/gtk2-unicode-release-2.8/
/usr/lib/x86_64-linux-gnu/wx/include/gtk2-unicode-release-2.8/wx/
/usr/lib/x86_64-linux-gnu/wx/include/gtk2-unicode-release-2.8/wx/setup.h
/usr/lib/x86_64-linux-gnu/wx/config/
/usr/lib/x86_64-linux-gnu/wx/config/gtk2-unicode-release-2.8
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_adv-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_aui-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_fl-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_gizmos-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_gizmos_xrc-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_gl-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_html-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_media-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_ogl-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_plot-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_qa-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_richtext-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_stc-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_svg-2.8.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_xrc-2.8.so