Look at this
ls -l /usr/lib/libwx_baseu
libwx_baseu-3.3.so libwx_baseu_net-3.3.so libwx_baseu_xml-3.3.so
libwx_baseu-3.3.so.0 libwx_baseu_net-3.3.so.0 libwx_baseu_xml-3.3.so.0
libwx_baseu-3.3.so.0.0.0 libwx_baseu_net-3.3.so.0.0.0 libwx_baseu_xml-3.3.so.0.0.0
that is 3.3
sudo pacman -Qo /usr/lib/libwx_baseu-3.3.so.0
flatbush:[ruben]:~$ sudo pacman -Qo /usr/lib/libwx_baseu-3.3.so.0
/usr/lib/libwx_baseu-3.3.so.0 is owned by wxwidgets-common 3.3.0-1
all 3.3
flatbush:[ruben]:~$ sudo pacman -Fl wxwidgets-common|grep libwx_baseu
wxwidgets-common usr/lib/libwx_baseu-3.2.so
wxwidgets-common usr/lib/libwx_baseu-3.2.so.0
wxwidgets-common usr/lib/libwx_baseu-3.2.so.0.2.3
wxwidgets-common usr/lib/libwx_baseu_net-3.2.so
wxwidgets-common usr/lib/libwx_baseu_net-3.2.so.0
wxwidgets-common usr/lib/libwx_baseu_net-3.2.so.0.2.3
wxwidgets-common usr/lib/libwx_baseu_xml-3.2.so
wxwidgets-common usr/lib/libwx_baseu_xml-3.2.so.0
wxwidgets-common usr/lib/libwx_baseu_xml-3.2.so.0.2.3
that says 3.2