 Gcc -o4 Flag, Is it different than -O3 |
OESF Forums > Distros, Development, and Model Specific Forums > Everything Development > OpenZaurus/Opie/Qtopia
 Mar 27 2007, 10:04 AM
Post
#1
|
|
 Group: Members Posts: 902 Joined: 22-May 04 Member No.: 3,385  |
I'm playing around with optimizing compiled packages to run fine on Ångström, but the question isn't really Ångström-specific.
I've seen on Meanie's blog on building Firefox natively that he used the -O4 option in CFLAGS. I've looked but not found anything substantive on this flag. One Finnish page on the web states that if -On has n higher than 3, then the flag is automatically interpreted as -O3. Is this so? Or is there a difference between these? |
 |
 
|
 |
Replies
|
Mar 28 2007, 02:17 AM
Post
#2
|
|
 Group: Admin Posts: 3,281 Joined: 29-July 04 From: Cambridge, England Member No.: 4,149 |
If you haven't seen the film "Spinal Tap", the joke won't make any sense.
|
|
|
|
|
Mar 28 2007, 04:58 AM
Post
#3
|
|
|
Group: Members Posts: 902 Joined: 22-May 04 Member No.: 3,385 |
QUOTE(speculatrix @ Mar 28 2007, 11:17 AM) If you haven't seen the film "Spinal Tap", the joke won't make any sense.   Didn't get the joke either...How about the original issue though, is there really an -O4 flag that furthers optimization, or is it just the same as -O3? |
|
|
|
Posts in this topic
ShiroiKuma Gcc -o4 Flag Mar 27 2007, 10:04 AM
speculatrix that's using the Spinal Tap version of the com... Mar 27 2007, 01:18 PM
adf QUOTE(speculatrix @ Mar 27 2007, 09:18 PM)tha... Mar 27 2007, 03:16 PM Meanie QUOTE(adf @ Mar 28 2007, 09:16 AM)QUOTE(specu... Mar 27 2007, 11:42 PM koen QUOTE(ShiroiKuma @ Mar 28 2007, 12:58 PM)QUOT... Mar 28 2007, 05:00 AM ZDevil Well then, i have another curiosity question: how ... Mar 31 2007, 11:04 PM Da_Blitz just stick with -O2, -O3 or higer dont always prod... Apr 1 2007, 12:11 AM ShiroiKuma QUOTE(Da_Blitz @ Apr 1 2007, 09:11 AM)if you ... Apr 1 2007, 09:44 AM adf QUOTE(ShiroiKuma @ Apr 1 2007, 05:44 PM)QUOTE... Apr 1 2007, 10:14 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 24th July 2014 - 11:25 AM |