defaults for -march and -mtune

[Marcin Mirosław]

W dniu 24.11.2011 11:37, Jay Foad pisze:
> If I don't specify any -march= or -mtune= options, what are the
> default architectures to generate code for and to tune for? Can I get
> the compiler to tell me this information?
>
> The documentation here doesn't seem to say anything about it:
>
> http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html
>
> I'm using "gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1" targetting x86_64.

Hello!
Try: gcc -Q --help=target 2>&1|grep  "march\|mtune"
Regards