[Solved] CFLAGS="What the heck?"

[82issa]

We have the cflags listed for our 32bit processors in

http://porteus.org/component/content/ar ... ource.html

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[b]CFLAGS="-O3 -march=i486 -mtune=i686"[/b]

I haven't found anything that states some sort of standard for the x86_64 architecture. I know what I would like to put in there but if i want my executables to be the most portable across various x86_64 style cpu's. What options should we use.

great resource: I can draw up plenty of conclusions from here. But thought I might get some input from others.

http://en.gentoo-wiki.com/wiki/Safe_Cflags/Intel
http://en.gentoo-wiki.com/wiki/Safe_Cflags/AMD

Maybe:

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[b]CFLAGS="-O3 -march=k8 -mtune=generic"[/b]

[fanthom]

i would follow Slackware standards which doesn't set '-march' and '-mtune' for 64bits at all, the only flags which you can find in official Slackbuilds are: -O2 -fPIC (i would also add -pipe)
Example:
http://ftp.heanet.ie/mirrors/ftp.slackw ... SlackBuild

[82issa]

Excellent thanks so much fanthom