Re: [tip:perfcounters/core] perf_counter tools: Build with native optimization

Ingo Molnar
2009-06-05T18:42:22Z

* Paul Mackerras <paulus@samba.org> wrote:

> tip-bot for Ingo Molnar writes:
>
> > perf_counter tools: Build with native optimization
> >
> > Build the tools with -march=native by default.
>
> On powerpc (RHEL5.2 on POWER5+, gcc 4.1.2), I get:
>
> CC perf.o
> cc1: error: unrecognized command line option "-march=native"
> make: *** [perf.o] Error 1

ok, i removed that.

> Is there a way to make the default CFLAGS depend on the architecture?
> We need -m64 on powerpc as well.

Would be nice to add a Makefile rule to add -m64 on all 64-bit
architectures. That would avoid having to do PowerPC-specific magic.

(But, PowerPC-specific rules would be fine too, of course.)

Ingo