Cross building the Debian archive
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Debian unstable has about 22000 source packages. Out of those, about 5000
source packages can satisfy their Build-Depends in a cross build
setting. For failing packages, detailed diagnostics can be found at
http://bootstrap.debian.net/cross_all.html. (Thanks to Johannes Schauer.)
Out of those 5000 source packages, I selected 3000 popular (as in
popcon) source packages and built them using debomatic (build arch =
amd64, host arch = ppc64el). (Thanks to Luca Falavigna.) About 1000
builds were successful (which doesn't imply that the resulting packages
actually work.) We can conclude that about 4% of Debian can be cross
built today.
You can find the build logs at:
http://subdivi.de/~helmut/debomatic-logs/