How to update world with new CFLAGS: -O3 ?

[znavko]

I use Funtoo for browsing the web. I compiled all my world with CFLAGS -O2. I changed it to -O3 to try how it will work. I typed world update

 

# cat /etc/portage/make.conf
MAKEOPTS="-j5"
LINGUAS="en_US ru_RU"
L10N="en-US ru-RU"

CFLAGS="-march=native -O3 -pipe"
CXXFLAGS="${CFLAGS}"

CPU_FLAGS_X86="mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3"

VIDEO_CARDS="intel"

USE="alsa bmp dbus 
     djvu
     core-kit flv
     gif
     introspection
     jpeg mp3 
     networkamagern  
     png
     udev policykit
     rar tiff
     X zlib
     -gnome 
     -gtk -gtk2 -gtk3 
     -kde -minimal
     -qt3 -qt4 -qt5
     -wicd"


# emerge -e world

 

It started to compile 1038 packages and it had finished 600 of them when I reboot. Now I want it continues to compile the rest.

How to do it?

How to compile packages that were compiled with -O2 flag instead of current -O3 as file /etc/portage/make.conf is containing now?

[palica]

emerge --resume

 

[Oleg Vinichenko]

and if you want portage to keep building, even if something failed in-between, then add --keep-going, it will will skip all failures and continue. That's, of course, if failed ebuild not used by other ebuilds further down in list, then the merge will stop.

[drobbins]

Also, just a note, I don't recommend -O3 and it is not always faster. -O2 contains all the 'almost always good' optimizations, and -O3 contains some questionable ones.