[gentoo-amd64] Please suggest settings and flags in /etc/make.conf?

[Mark Knecht <markknecht@gmail.com>]

I'm just installing Gentoo on my first new machine in years. Can
anyone suggest which of the CPU flags below might best be added to
make.conf? The machine will be a standard desktop running rt-sources
and stable Gentoo.

This processor is 2 physical cores with hyperthreading enabled in each core.

Currently make.conf has only the standard stuff other than me adding
the MAKEOPTS line:

# These settings were set by the catalyst build script that automatically
# built this stage.
# Please consult /usr/share/portage/config/make.conf.example for a more
# detailed example.
CFLAGS="-O2 -pipe"
CXXFLAGS="-O2 -pipe"
# WARNING: Changing your CHOST is not something that should be done lightly.
# Please consult http://www.gentoo.org/doc/en/change-chost.xml before changing.
CHOST="x86_64-pc-linux-gnu"
# These are the USE flags that were used in addition to what is provided by the
# profile used for building.
USE="mmx sse sse2"
MAKEOPTS="-j5"


Thanks,
Mark


processor       : 3
vendor_id       : GenuineIntel
cpu family      : 6
model           : 37
model name      : Intel(R) Core(TM) i5 CPU         661  @ 3.33GHz
stepping        : 2
cpu MHz         : 3325.050
cache size      : 4096 KB
physical id     : 0
siblings        : 4
core id         : 2
cpu cores       : 2
apicid          : 5
initial apicid  : 5
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good
xtopology nonstop_tsc pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm sse4_1 sse4_2 aes lahf_lm ida tpr_shadow vnmi
flexpriority ept vpid
bogomips        : 6649.95
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management: