Re: [gentoo-user] mirrorselect build failed

[Michael <confabulate@kintzios.com>]

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On Friday, 24 May 2024 09:57:36 BST Waldo Lemmer wrote:
> Hi Michael,
> 
> -march=x86-64 and -mtune=generic will not speed up your OS installation.
> These flags tell compilers to produce binaries that can run on any AMD64
> system and that aren't optimized for your specific system.
> 
> These flags have no effect on binary packages, since those have already
> been compiled.

You're right, those are the settings the binary packages have been built with 
- my mistake, sorry!

The CFLAGS on the client should/could be tuned to its own CPU with "-
march=native". The "... speeding up of the OS installation" I had mentioned 
referred to downloading the binaries, rather than having to build them 
locally.

Anyway, the CFLAGS Jude posted are incorrect:

CFLAGS="-O2 -pipe -native"

and his CPU_FLAGS_X86 are incomplete:

CPU_FLAGS_X86="mmx mmxext sse sse2"

Your links should hopefully help Jude to set the correct settings for this 
system, before he continues with the Gentoo Handbook.

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