[qrencode] PNG output is disabled at compile time
{"kernel":"4.14.123","hostname":"to","system":"ARMv7 Processor rev 1 (v7l)","model":"Turris Omnia","board_name":"armada-385-turris-omnia","release":{"distribution":"TurrisOS","version":"4.0-beta2","revision":"a6dba1a","target":"mvebu/cortexa9","description":"TurrisOS 4.0-beta2 a6dba1a"}}
qrencode "turris://$(ubus call network.interface.lan status | sed -n 's|.*"address": "\([0-9.]*\)"
.*|\1|p')/luci-static/my_secret_url.token?scheme=http&hostname=$HOSTNAME&board_name=turris" -o /www/luci-static/my_secret_url.svg
produces
PNG output is disabled at compile time. No output generated.
upstream source https://github.com/openwrt/packages/blob/openwrt-18.06/libs/qrencode/Makefile#L60
upstream bug report https://github.com/openwrt/packages/issues/9200