vendor_id : GenuineIntel cpu family : 6 model : 28 model name : Intel(R) Atom(TM) CPU 230 @ 1.60GHz stepping : 2 cpu MHz : 1596.175 cache size : 512 KB 32 bit profile (x86):
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=prescott -O2 -fomit-frame-pointer -pipe"
CXXFLAGS="${CFLAGS}"
64 bit profile (amd64) for < GCC 4.3:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=nocona -O2 -pipe"
CXXFLAGS="${CFLAGS}"
64 bit profile (amd64) for GCC 4.3 and 4.4:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=core2 -O2 -mtune=generic -pipe"
CXXFLAGS="${CFLAGS}"
64 bit profile (amd64) for >= GCC 4.5:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=atom -O2 -pipe"
CXXFLAGS="${CFLAGS}"
AMD K6
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=k6 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD K6-2
vendor_id : AuthenticAMD
cpu family : 5
model : 8
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=k6-2 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
processor : 0
vendor_id : AuthenticAMD
cpu family : 5
model : 8
model name : AMD-K6(tm) 3D processor
stepping : 12
cpu MHz : 451.031
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8 pge mmx syscall 3dnow k6_mtrr up
bogomips : 902.84
clflush size : 32
Note: /proc/cpuinfo may be confusing. The model name may say "AMD-K6(tm) 3D Processor" but it is not a AMD K6-3. Rely on the vendor_id, CPU family, and model number.
AMD Geode LX
processor : 0
vendor_id : AuthenticAMD
cpu family : 5
model : 10
model name : Geode(TM) Integrated Processor by AMD PCS
stepping : 2
cpu MHz : 498.044
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu de pse tsc msr cx8 sep pge cmov clflush mmx mmxext 3dnowext 3dnow
bogomips : 996.08
clflush size : 32
CHOST="i486-pc-linux-gnu"
CFLAGS="-march=k6-2 -Os -fno-align-jumps -fno-align-functions -fno-align-labels -fno-align-loops -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
GCC 4.3+:
CHOST="i486-pc-linux-gnu"
CFLAGS="-march=geode -Os -fno-align-jumps -fno-align-functions -fno-align-labels -fno-align-loops -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
Note: While i586-pc-linux-gnu CHOST works fine on a Geode LX, i486-pc-linux-gnu should be a more performant choice right now due to the way Geode LX CPU pipeline and scheduling works. glibc i586 assembler optimized routines are measurably slower than the i486 ones on a Geode LX.
AMD Geode GX1
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=pentium-mmx -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD K6-3
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=k6-3 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD DuronFrom 600 to 900 MHz. These models have a tbird-alike core model. product: AMD Duron(tm) Processor version: 6.3.1
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-tbird -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD Mobile Duron
vendor_id : AuthenticAMD
cpu family : 6
model : 3
model name : AMD Duron(tm) Processor
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-tbird -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD Duron MorganFrom 900 to 1300 MHz. The Morgan Durons are based on the Palomino core, and hence can be treated as Athlon XP's.
vendor_id : AuthenticAMD
cpu family : 6
model : 7
model name : AMD Duron(tm) Processor
stepping : 1
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD Athlonvendor_id : AuthenticAMD cpu family : 6 model : 8 or 4 or 2 or 1 model name : AMD Athlon(TM)Processor or AMD-K7(TM)Processor stepping : 4 or 2 or 1
Note: This processor is only available as a Slot A processor; if you have a Socket A/462 Athlon, it's a Thunderbird (see below).
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD Athlon Thunderbird
vendor_id : AuthenticAMD
cpu family : 6
model : 4
model name : AMD Athlon(tm) Processor
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-tbird -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD Athlon (Palomino) XP/Duron
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : AMD Athlon(tm)
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
Sempron 2400+ (2000MHz) is also identified as cpu family:6 model:8 model_name:AMD Sempron(TM) 2400+ (256kB cache). The Duron 1800+ is also included in this list.
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : AMD Sempron(tm) 2400+
stepping : 1
cpu MHz : 1659.979
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp
mmxext 3dnowext 3dnow up ts
bogomips : 3328.55
clflush size : 32
AMD Athlon 4
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-4 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD Athlon XP/Geode NX
vendor_id : AuthenticAMD
cpu family : 6
model : 6 or 8
stepping : 2
Some CPUs have also been observed with the following:
model : 10
model name : AMD Athlon(tm) XP 2500+
stepping : 0
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 6
model name : AMD Athlon(tm) XP 2000+
stepping : 2
cpu MHz : 1670.597
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall
mmxext 3dnowext 3dnow up ts
bogomips : 3343.54
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : AMD Geode NX 1750
stepping : 1
cpu MHz : 1400.115
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp
mmxext 3dnowext 3dnow up ts fid vid
bogomips : 2801.55
clflush size : 32
AMD Athlon MP
vendor_id : AuthenticAMD
cpu family : 6
model : 10
model name : AMD Sempron(tm)
stepping : 0
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-mp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
AMD Athlon 6432 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
cpu family :15
model :4
model name :AMD Athlon(tm) 64 Processor 3200+
stepping :8
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 63
model name : AMD Athlon(tm) 64 Processor 3200+
stepping : 2
cpu MHz : 1999.821
cache size : 512 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm
bogomips : 4001.79
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
AMD Athlon 64 X2vendor_id: AuthenticAMD cpu family: 15 model: 35, 43, 75 or 107 stepping: 1 or 2 model name: AMD Athlon(tm) 64 X2 Dual Core Processor 32 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Athlon(tm)64 X2 Dual Core Processor 4200+
stepping : 1
cpu MHz : 2200.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm cmp_legacy
bogomips : 4424.71
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Athlon(tm)64 X2 Dual Core Processor 4200+
stepping : 1
cpu MHz : 2200.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm cmp_legacy
bogomips : 4424.71
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
If you have a newer Athlon64("Venice" or "San Diego")/Athlon64-X2("Manchester", "Toledo", or "Windsor") (check for pni in cat /proc/cpuinfo) you can also add -msse3 to your CFLAGS to enable SSE3 support. Any chip using the 90nm process except for the "Winchester" class Athlon64 supports SSE3. If you're having gcc-4.3+ and "pni" in flags, you may want to use -march=k8-sse3 instead of -march=k8. You can take out the -msse3 by doing this. Also bear in mind that all Athlon64 X2 and Opteron 165, 170, 175, 180, and 185 processors are dual-core CPUs so make sure that you use MAKEOPTS="-j3" in your make.conf. This doesn't affect the code but might reduce compile times. All socket AM2 processors are SSE3 capable as well. There are some socket AM2+ Athlon processors which are Phenom based (Athlon X2 7550, Athlon X2 7750, Athlon X2 7850). Look below. AMD 1xx Opteronvendor_id : AuthenticAMD cpu family : 15 model : 5 model name : AMD Opteron(tm) Processor 1xx stepping : 8 32-bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-O2 -march=opteron -msse3 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64-bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=opteron -O2 -pipe"
CXXFLAGS="${CFLAGS}"
socket 939, single core:
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 39
model name : AMD Opteron(tm) Processor 144
stepping : 1
cpu MHz : 1800.000
cache size : 1024 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
syscall nx mmxext fxsr_opt lm 3dnowext 3dnow up pni lahf_lm
bogomips : 3593.50
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
socket 939, dual core: processor : [0 | 1] vendor_id : AuthenticAMD cpu family : 15 model : 35 model name : Dual Core AMD Opteron(tm) Processor 180 stepping : 2 cpu MHz : 1000.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : [0 | 1] cpu cores : 2 apicid : [0 | 1] initial apicid : [0 | 1] fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy bogomips : 2006.23 clflush size : 64 power management: ts fid vid ttp AMD 2xx/8xx Opteron
vendor_id : AuthenticAMD
cpu family : 15
model : 5
model name : AMD Opteron(tm) Processor xxx
stepping : 8
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=opteron -O2 -pipe"
CXXFLAGS="${CFLAGS}"
AMD 22xx Dual-Core Opteron
vendor_id : AuthenticAMD
cpu family : 15
model : 65
model name : Dual-Core AMD Opteron(tm) Processor 22xx
stepping : 2
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=opteron -O2 -pipe"
CXXFLAGS="${CFLAGS}"
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 65
model name : Dual-Core AMD Opteron(tm) Processor 2212 HE
stepping : 3
cpu MHz : 2010.298
cache size : 1024 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush mmx fxsr sse sse2
ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm cr8_legacy
bogomips : 4022.18
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc
AMD 23xx Quad-Core Barcelona
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : Quad-Core AMD Opteron(tm) Processor 23xx
stepping : 10
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
Note: For GCC 4.3+ you may use the -march=barcelona option.
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : Quad-Core AMD Opteron(tm) Processor 2354
stepping : 3
cpu MHz : 2200.000
cache size : 512 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good pni monitor
cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw
ibs
bogomips : 4402.66
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
AMD Athlon X2 7x50, AMD Phenom X3/X4, AMD Phenom II, AMD Athlon II X2/X3/X4
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : AMD Phenom(tm) xxxx Triple/Quad-Core Processor
stepping : 2/3
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=amdfam10 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
Note: For versions of GCC older than 4.3+ you have to use -march=k8 -msse3 -msse4a to get all processor features (as long as your version of gcc supports them).
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 6
model name : AMD Athlon(tm) II X2 240 Processor
stepping : 2
cpu MHz : 2812.549
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save
bogomips : 5625.09
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 4
model name : AMD Phenom(tm) II X3 720 Processor
stepping : 2
cpu MHz : 2812.378
cache size : 512 KB
physical id : 0
siblings : 3
core id : 0
cpu cores : 3
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall
nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc pni monitor cx16 lahf_lm cmp_legacy
svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
bogomips : 5624.75
clflush size : 64
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : AMD Phenom(tm) 9950 Quad-Core Processor
stepping : 3
cpu MHz : 2808.614
cache size : 512 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall
nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good pni monitor cx16 lahf_lm cmp_legacy
svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs
bogomips : 5617.22
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management : ts ttp tm stc 100mhzsteps hwpstate
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Athlon(tm) II X4 630 Processor
stepping : 2
cpu MHz : 2800.000
cache size : 512 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
bogomips : 5624.67
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
AMD Sempron / AMD Sempron64
vendor_id : AuthenticAMD cpu family : 15 model : 44 model name : AMD Sempron(tm) Processor 32 bit (Socket A):
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit (Socket 754):
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
64 bit (Socket 754/AM2, SSE3 capable):
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -msse3 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
64-bit (Socket AM3):
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=amdfam10 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
AMD Turion64 / AMD X2 / AMD Ultra32 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -msse3 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -msse3 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
AMD Mobile Sempronvendor_id : AuthenticAMD cpu family : 15 model : 8 model name : Mobile AMD Sempron Processor 2800+ 32 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -msse3 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -msse3 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
If you have a Sempron without SSE3 (earlier chips), omit "-msse3". SSE3 is called pni (prescott new instuction) by cpuinfo (cat /proc/cpuinfo). Check it out, there are many different sempron mobile CPUs on sale, those that work at 1.8GHz are K8 (i.e. AMD SM 3000+), some others, older, aren't yet k8 but they're still k7 so you must specify athlon-xp instead of athlon64, anyway AMD announced in 2006 there will be 64bit Sempron Mobile CPUs so be carefull and pay attention, run a cat /proc/cpuinfo and then ask on AMD forums if you don't know what to do.
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 44
model name : Mobile AMD Sempron(tm) Processor 3000+
stepping : 2
cpu MHz : 1800.000
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
syscall nx mmxext fxsr_opt 3dnowext 3dnow pni lahf_lm ts fid vid ttp tm stc
bogomips : 3602.19
clflush size : 64
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