Really late post on this, but an emphasis on march settings is
warranted.
This will totally bungle all kinds of compiling.
Daid, thanks for your input. I keep an extra line of 'safe' cflags
commented out, which saved the day in this case.
If it helps anyone, here's what the [continuing] problem was:
When I figured out that I was using the wrong march, I switched it
out, but forgot to look over the cflags, which still contained -msse3.
Hence some improvement but not a total fix. I was thinking of giving
my safe cflags a go, when, looking at them and at my regular cflags, I
realized that -msse3 didn't belong. Fixed it, emerge -uDNe world, and
now emerge --sync works!
Based on this experience, I would submit that if you're running Gentoo
and seeing SIGILL, double checking your march and your cflags would be
a pretty good place to start.
Alexander Clark
