Comment 3 for bug 235064

IIRC the Debian implementation of this (if I'm remembering correctly that this is even supported at all in Debian) works by building it for the oldest listed distribution and then automatically copying the binaries to the others once they're built. That saves having to mess about with different binary versions.

This would only work for sources that build binaries that will actually work on all the distributions at once; however, in many of the situations where one might want to use this, that would be the case. I think that could be an acceptable restriction. Pau, Mario, what do you think?

Alternatively, one could look at the builds for the later distributions as a kind of binary-only rebuild, as discussed elsewhere. I believe the Debian convention for those is to append +b1 +b2 etc. to the binary versions.