Re: defaults for -march and -mtune

[Ryan Hill <dirtyepic at gentoo dot org>]

On Thu, 24 Nov 2011 16:10:10 +0100
Marcin MirosÅaw <marcin@mejor.pl> wrote:

> W dniu 24.11.2011 13:50, Jay Foad pisze:
> > Marcin MirosÃaw wrote:
> >> Try: gcc -Q --help=target 2>&1|grep  "march\|mtune"
> >
> > Thanks! It's a shame it doesn't work on GCC 4.1.2 as well...
> 
> If you want to know what is default target for older gcc you can do such 
> trick:
> $ touch a.c
> $ gcc -fverbose-asm -S a.c -o - |grep "march\|mtune"
> (founded on gcc mailinglist)

Or `echo "" | gcc -v -E - 2>&1 | grep cc1`


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