[sane-devel] PNG support for "scanimage"?

[Dr Rainer Woitok]

Greetings,

still using Ubuntu 16.04 I've installed "scanimage" from Rolf's PPA:

$ scanimage --version
scanimage (sane-backends) 1.0.27git; backend version 1.0.27
$ scanimage -d pixma:MX880_new-host --format png
PNG support not compiled in
$

What's the reason for not supporting PNG?  Do I have to clone the source
repository to get PNG support?

Sincerely,
  Rainer