[Interest] good-compromise compatibility setting for -march=??? option (x86)?

[Rainer Wiesenfarth]

Sorry for jumping into your discussion, but I think you are talking about
different topics.

René would like to know how to set "march" when he *compiles code on* the
Celeron (N3150) that should *run on* the (probably first generation) Core
i7 mobile.

Thiago says that "march=native" produces code that is guaranteed to run on
the *same architecture.*

My guess would be that René has to set "march" to what the i7 supports,
using sde64 searching for Nehalem or - eventually - Sandy Bridge. As I am
on AMD and Windows, it might be Thiago's part to provide the sde64
information... :-)

Cheers, Rainer

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