yocto-poky/scripts/postinst-intercepts/update_icon_cache

#!/bin/sh

set -e
# update native pixbuf loaders
gdk-pixbuf-query-loaders --update-cache

for icondir in $D/usr/share/icons/*/ ; do
    if [ -d $icondir ] ; then
        gtk-update-icon-cache -fqt  $icondir
    fi
done