[moyix]

All right fine, I give in. In current amd64 Debian unstable (main, contrib, and non-free), 48 of the 69,112 packages include a shared library built with -ffast-math, a total of 485 .so files.

Actually it wasn't so bad :) All the current debs add up to a mere 113GB, and the .so files are just 46GB once extracted. Quick work. Here's the list:

https://moyix.net/~moyix/debian_unstable_amd64_ffast_results...

And here's a visualization of the reverse dependency graph:

https://moyix.net/~moyix/ffast_debian.pdf