Hello people, I've been using for about a month GCC 4.2.0 with binutils 2.18. The optimizations are enabled and everything kept working fine! Thanks for this great distro. braulio@brauliopc ~ $ cat /etc/make.conf # These settings were set by the catalyst build script that automatically built this stage # Please consult /etc/make.conf.example for a more detailed example GENTOO_MIRRORS="http://gentoo.osuosl.org" EMERGE_DEFAULT_OPTS="-v" CHOST="x86_64-pc-linux-gnu" CFLAGS="-pipe -O2 -fomit-frame-pointer -mtune=athlon64 -mcpu=athlon64 -march=athlon64" CXXFLAGS="${CFLAGS}" FEATUES="parallel-fetch" USE=" threads bzip2 unicode bash-completion pch mmx mmxext 3dnow 3dnowext sse sse2 a52 alsa vorbis ogg mp3 mad flac lame aac musicbrainz ffmpeg theora xvid mpeg quicktime vcd x264 -gtk -gnome X kde qt3 qt4 dbus xcomposite opengl xscreensaver xv jpeg tiff png gif pdf imlib lcms cdr dvd dvdr alsa usb hal lm_sensors gphoto2 encode java samba mysql sqlite3 apache2 ldap " INPUT_DEVICES="keyboard mouse" VIDEO_CARDS="nv" LINGUAS="pt_BR" Cheers, brĂ¡ulio