Arch Linux

generic_

Member

From: Jacksonville,FL US

Registered: 2008-12-21

Posts: 182

What are CFLAGS?

Hey, I'm sorta of noob when it comes to this. I know CFLAGS have something do to with compiles/processor I know they can be set and I hear they can effect speed of a program after it's compiled with the proper CFLAGS.

Am I right? What did  I leave out?
Is the speed/efficiency gain the big?
How do I set my CFLAGS, and how do I know which ones are right for me?

Thx

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I'm just lost n00b!

lilsirecho

Veteran

Registered: 2003-10-24

Posts: 5,000

Re: What are CFLAGS?

Enter ...cflags .in google and read all about it.

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bangkok_manouel

Member

From: indicates a starting point

Registered: 2005-02-07

Posts: 1,557

Re: What are CFLAGS?

How do I set my CFLAGS

http://wiki.archlinux.org/index.php/Makepkg.conf

zimt

Member

Registered: 2008-07-19

Posts: 17

Re: What are CFLAGS?

Most of the time, you will not gain a recognizable performance boost after recompiling a package with your custom cflags set in makepkg.conf. However, if you do compile software from time to time using makepkg, it does not hurt to have your custom cflags set. The only software where I recognized a performance boost after recompiling with custom cflags was the x264 package for video encoding.