I have written up some notes about this discussion. I probably got some things wrong, and there are some points marked as too be resolved. https://wiki.netbsd.org/pkgsrc/gcc/ The big things to think about and discuss are: What do we do on NetBSD 7 (which has gcc 4.8). My proposal is to use gcc 6 for C++, and the base version for C. Is it ok to set gcc-inplace-math and try to drive dependencies for gcc* to near zero? If that's ok, let's do it. Probably anything older than gcc48 isn't of interest and we don't need to mark those for bootstrap. I think gcc48 is the oldest even slightly reasonable choice for a bootstrap version. The branch is coming, but remember that things are more or less broken on NetBSD 6 because of this issue. I think Edgar has pending patches that more or less do that is described. So please feel free to fix/explain what I got wrong, or send mail about it, to me if it's a nit, or to the list if substantive.
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