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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