gcc options when building kernel

[Norberto Meijome]

Hi all,
I'm rebuilding my kernel and I noticed some gcc (I believe ) options 
being used that I don't think I set anyway.

The options are :
-mno-mmx -mno-3dnow -mno-sse -mno-sse2

Does this mean that the kernel won't make use of these cpu features, 
even though they are supported by the cpu (see below)

Thanks!
Beto

---- MORE INFO ----

They  seem to appear throughout the kernel build process, for example:

---
cc -O2 -fno-strict-aliasing -pipe -O2 -pipe -march=pentium-m 
-DAHC_REG_PRETTY_PRINT=1 -Werror -D_KERNEL -DKLD_MODULE -nostdinc -I-   
-DHAVE_KERNEL_OPTION_HEADERS -include 
/usr/obj/usr/src/sys/AYIIN/opt_global.h -I. -I@ -I@/contrib/altq 
-I@/../include -finline-limit=8000 -fno-common -g 
-I/usr/obj/usr/src/sys/AYIIN -mno-align-long-strings 
-mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 
-ffreestanding -Wall -Wredundant-decls -Wnested-externs 
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline 
-Wcast-qual  -fformat-extensions -std=c99 -c 
/usr/src/sys/modules/aic7xxx/ahc/../../../dev/aic7xxx/aic7xxx.c

cc -O2 -fno-strict-aliasing -pipe -O2 -pipe -march=pentium-m 
-DAHC_REG_PRETTY_PRINT=1 -Werror -D_KERNEL -DKLD_MODULE -nostdinc -I-   
-DHAVE_KERNEL_OPTION_HEADERS -include 
/usr/obj/usr/src/sys/AYIIN/opt_global.h -I. -I@ -I@/contrib/altq 
-I@/../include -finline-limit=8000 -fno-common -g 
-I/usr/obj/usr/src/sys/AYIIN -mno-align-long-strings 
-mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 
-ffreestanding -Wall -Wredundant-decls -Wnested-externs 
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline 
-Wcast-qual  -fformat-extensions -std=c99 -c 
/usr/src/sys/modules/aic7xxx/ahc/../../../dev/aic7xxx/aic7xxx_93cx6.c
---

from DMESG, my cpu is :
---
CPU: Intel(R) Pentium(R) M processor 1.50GHz (1496.26-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x6d6  Stepping = 6
  
Features=0xafe9f9bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,PBE>
  Features2=0x180<EST,TM2>
---

My /etc/make.conf is:
-----
BOOTWAIT=4000

SUP_UPDATE="YES"
SUP="/usr/local/bin/cvsup"
SUPFILE="/usr/local/etc/stable-supfile"
PORTSSUPFILE="/usr/local/etc/ports-supfile"

ENABLE_WPA_SUPPLICANT_EAPOL=true
NO_PROFILE=true
NO_INET6=true
NO_PORTSUPDATE=true
NO_ATM=true

X_WINDOW_SYSTEM=xorg

DOC_LANG = en_US.ISO8859-1

CPUTYPE?=pentium-m
CFLAGS+= -O2 -pipe
# added by use.perl 2006-01-24 12:09:58
PERL_VER=5.8.7
PERL_VERSION=5.8.7

WITH_MOZILLA="firefox"
WITH_FAM_SYSTEM=fam
----