@ James Hunt

Trying to reproduce -O1 or -O2 by listing a set of optimization flags is
invalid.

a) most optimization flags are no-ops at the default -O0 (optimization
disabled);

b) There are some optimizations that are enabled at a given optimization
level, but do not have a named flag.

However, it is valid to say "-O2 -fno-whatever" to see if a specific
optimization pass is at fault (although disabling an earlier one can
hide a bug in a later one, so you can't make any firm statements).

-- 
dpkg segfaults during debootstrap on natty armel
https://bugs.launchpad.net/bugs/674146
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