tags 905035 +patch thanksAfter some searching around and following links from the gentoo bugtracker I found a patch for this. I applied it to the package and was able to get a succesful build in raspbian buster.
A debdiff can be found at http://debdiffs.raspbian.org/main/libk/libkf5kdcraw/libkf5kdcraw_17.08.3-1+rpi1.debdiff
No intent to NMU in Debian.