wxWidgets_INCLUDE_DIRS contains

    /usr/lib/x86_64-linux-gnu/wx/include/gtk2-unicode-3.0/usr/include/wx-3.0

wx-config --cxxflags output

    -I/usr/lib/x86_64-linux-gnu/wx/include/gtk2-unicode-3.0
    -I/usr/include/wx-3.0
    -D_FILE_OFFSET_BITS=64 -DWXUSINGDLL -D__WXGTK__ -pthread

wxWidgets_LIBRARIES contains

    -L/usr/lib/x86_64-linux-gnu-pthread-lwx_gtk2u_core-3.0-lwx_baseu-3.0

wx-config --libs contains

    -L/usr/lib/x86_64-linux-gnu -pthread
    -lwx_gtk2u_xrc-3.0 -lwx_gtk2u_html-3.0 -lwx_gtk2u_qa-3.0 -lwx_gtk2u_adv-3.0
    -lwx_gtk2u_core-3.0 -lwx_baseu_xml-3.0 -lwx_baseu_net-3.0 -lwx_baseu-3.0