iframe extension is merged in to KiwiSDR main code from version KiwiSDR_v1.371. This extension is not needed anymore. If you have installed iframe extension from this repository, uninstall this extension before upgrading to KiwiSDR >= v1.371. Otherwise your KiwiSDR compile might fail.
THIS EXTENSION IS DEPRECATED AND UNMAINTAINED.
KiwiSDR iframe extension allows you to embed another webpage into KiwiSDR gui
Place github extension files on KiwiSDR's /root/extensions folder
then recompile kiwisdr
make stop
make
make install
make start