I have been running this pth-Version for more than a year (if I remember correctly), with no perceivable problems so far. I think "amd64" would be justified as keyword. emerge --info follows (but this is a rather old machine, so don't wonder if You find leftover keywords from 2004.2 or something): Portage 2.0.54 (default-linux/amd64/2005.1, gcc-3.4.5, glibc-2.3.5-r2, 2.6.15.1-s2 x86_64) ================================================================= System uname: 2.6.15.1-s2 x86_64 AMD Athlon(tm) 64 Processor 3200+ Gentoo Base System version 1.6.14 dev-lang/python: 2.3.5-r2, 2.4.2 sys-apps/sandbox: 1.2.12 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.16.1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=k8 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/fax /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control /var/spool/fax/etc" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=k8 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig ccache distlocks fixpackages sandbox sfperms strict" GENTOO_MIRRORS="ftp://ftp.gentoo.mesh-solutions.com/gentoo http://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo http://mirrors.sec.informatik.tu-darmstadt.de/gentoo" LANG="de_DE.UTF-8" LC_ALL="de_DE.UTF-8" LINGUAS="de en" MAKEOPTS="-j4" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="amd64 X X509 aac acpi alsa aotuv apache2 audiofile authdaemond avi berkdb bitmap-fonts bzip2 cairo cdparanoia cdr cjk cli crypt cscope cups curl dga divx4linux dri dvd dvdr dvdread eds emboss emul-linux-x86 encode ethereal exif expat fam faxonly ffmpeg firefox flac flash foomaticdb fortran gatos gd gd-external gdbm gif gimp gimpprint glut glx gmp gphoto2 gpm graphicsmagick gstreamer gtk gtk2 hal iconv idn imagemagick imap imlib imlib2 innodb isdnlog ithreads java jp2 jpeg junit lcms ldap lesstif libwww lirc lm_sensors logitech-mouse lzo lzw lzw-tiff mad maildir matroska mhash mikmod mime ming mng moneyplex motif mozdevelop mozsvg mp3 mpeg mysql ncurses nls nptl nptlonly nsplugin objc ogg oggvorbis opengl pam pcre pdf pdflib perl php pic png pppd python qt quicktime readline recode reflection rtc ruby sasl scanner sdl sensord session skey slang smime sockets socks5 sox speex spell spl ssl svg tcltk tcpd tetex theora threads tiff truetype truetype-fonts type1-fonts udev unicode usb userlocales v4l v4l2 vorbis wmf xanim xine xml xml2 xorg xosd xpm xprint xscreensaver xv xvid xvmc zlib video_cards_radeon linguas_de linguas_en userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, INSTALL_MASK, LDFLAGS
indeed, thanks for the notification
