Pentium-m용 젠투리눅스를 빌드하고 있습니다. 그런데 뭔가 이상합니다.

MARCH_TUNE="-march=i686 -mfpmath=sse -mmmx -msse -msse2 -msse3" #original value. But Pentium-m does not supports SSE3
 
#Belows are I've tried
#But every values are failed to successful booting
 
#MARCH_TUNE="-march=i686"
#MARCH_TUNE="-march=i686 -mfpmath=sse -mmmx -msse -msse2"
 
#MARCH_TUNE="-march=pentium-m"
#MARCH_TUNE="-march=pentium-m -mmmx -msse -msse2"
#MARCH_TUNE="-march=pentium-m -mfpmath=sse -mmmx -msse -msse2"
 
#MARCH_TUNE="-mtune=generic"
#MARCH_TUNE="-mtune=generic -mmmx -msse -msse2"
#MARCH_TUNE="-mtune=generic -mfpmath=sse -mmmx -msse -msse2"

Portage 2.2.12-r9 (python 2.7.10-final-0, default/linux/x86/10.0/chromeos, gcc-4.9.x, unavailable, 3.19.0-25-generic x86_64)
=================================================================
System uname: Linux-3.19.0-25-generic-x86_64-AMD_FX-tm-4100_Quad-Core_Processor-with-glibc2.2.5
KiB Mem:     8133472 total,    144860 free
KiB Swap:          0 total,         0 free
Timestamp of tree: Unknown
ld GNU gold (binutils-2.25.51-r56-48ba8648ee02f246c4fb286d7918f750c2b4ea4f_cos_gg 2.25.51.20141117) 1.11
ccache version 3.1.10 [disabled]
app-shells/bash:          4.2_p48-r1
dev-lang/python:          2.7.10::chromiumos
sys-apps/baselayout:      2.2::chromiumos
sys-apps/sandbox:         2.6-r1
sys-devel/autoconf:       2.69
sys-devel/automake:       1.11.6-r1, 1.13.4, 1.14.1
sys-devel/binutils:       2.25.51-r56::chromiumos
sys-devel/libtool:        2.4.6
sys-devel/make:           4.1-r1
sys-kernel/linux-headers: 4.0-r3::chromiumos (virtual/os-headers)
Repositories: portage-stable chromiumos eclass-overlay freon x86-generic
ACCEPT_KEYWORDS="x86"
ACCEPT_LICENSE="* -@EULA -@CHROMEOS"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -march=pentium-m -pipe -O2 -pipe -march=pentium-m -mfpmath=sse -mmmx -msse -msse2 -g -fno-exceptions -fno-unwind-tables   -fno-asynchronous-unwind-tables  -clang-syntax"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT=""
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -march=pentium-m -pipe -O2 -march=pentium-m -pipe -O2 -pipe -march=pentium-m -mfpmath=sse -mmmx -msse -msse2 -g -fno-exceptions -fno-unwind-tables   -fno-asynchronous-unwind-tables  -clang-syntax"
DISTDIR="/var/lib/portage/distfiles-target"
EMERGE_DEFAULT_OPTS="--oneshot"
FCFLAGS=""
FEATURES="allow-missing-manifests assume-digests binpkg-logs buildpkg clean-logs config-protect-if-modified distlocks fixlafiles force-mirror news nodoc noinfo noman parallel-fetch parallel-install protect-owned sandbox sfperms splitdebug unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS=""
GENTOO_MIRRORS="https://commondatastorage.googleapis.com/chromeos-localmirror <a href="https://commondatastorage.googleapis.com/chromeos-mirror/gentoo"
INSTALL_MASK="" rel="nofollow">https://commondatastorage.googleapis.com/chromeos-mirror/gentoo"
INSTALL_MASK="</a>   /usr/lib*/*.la   /etc/init.d /etc/conf.d   /etc/logrotate.d   /etc/sandbox.d   /usr/share/bash-completion "
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,-O2 -Wl,--as-needed"
MAKEOPTS="-j4"
PKGDIR="/build/x86-generic/packages/"
PORTAGE_BUNZIP2_COMMAND="pbunzip2 --ignore-trailing-garbage=1"
PORTAGE_BZIP2_COMMAND="pbzip2"
PORTAGE_CONFIGROOT="/build/x86-generic/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/build/x86-generic/tmp/"
PORTDIR="/usr/local/portage/stable"
PORTDIR_OVERLAY="/usr/local/portage/chromiumos /usr/local/portage/eclass-overlay /mnt/host/source/src/overlays/project-freon /mnt/host/source/src/overlays/overlay-x86-generic"
USE="acpi bindist bluetooth buffet bzip2 cairo cros-debug cros_p2p crypt cxx dri drm_atomic evdev_gestures frecon hardened iconv kernel-3_14 legacy_keyboard legacy_power_button mbim mmx modules mudflap ncurses nptl nptlonly opengles ozone pam peerd readline scanner sse sse2 ssl sysfs unicode usb vaapi vlan wifi_bootstrapping x86 xkbcommon xorg zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" BOARD_USE="x86-generic" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev synaptics cmt" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en" LINUX_FIRMWARE="iwlwifi-all" OFFICE_IMPLEMENTATION="libreoffice" OZONE_PLATFORM="gbm default_gbm" OZONE_PLATFORM_DEFAULT="gbm" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" RUBY_TARGETS="ruby19 ruby18" USERLAND="GNU" VIDEO_CARDS="intel nouveau radeon fbdev" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, SYNC, USE_PYTHON

[ Legend : U - final flag setting for installation]
[        : I - package is installed with flag     ]
[ Colors : set, unset                             ]
 * Found these USE flags for sys-fs/e2fsprogs-1.42.12:
 U I
 - - nls         : Add Native Language Support (using gettext - GNU locale utilities)
 - - static-libs : Build static libraries