Matthias Scheler wrote:
> On Tue, Nov 14, 2006 at 12:08:49AM +0100, Ricardo Cervera Navarro wrote:
> 
>>I am using:
>>
>>CFLAGS+=-O2 -march=athlon
>>
>>in my /etc/mk.conf.
> 
> 
> I'm sorry but that is wrong.
> 
> 1.) Please do *not* modify "CFLAGS" in "/etc/mk.conf". You will cause
>     various build failures.

It's mentioned in the pkgsrc guide, so why shouldn't one do that?

http://www.netbsd.org/Documentation/pkgsrc/configuring.html#conf.cflags

> 2.) Please do *not* try to enforce using "-O2". There are packages which
>     build without optimization by purpose. It is default under NetBSD for
>     all the packages where this optimization level is known to work

Those packages should set

     BUILDLINK_TRANSFORM+=    rm:-O*

All others should be expected to work with -O2.

Roland