Please add "~amd64" to the KEYWORDS for dev-libs/ffcall-1.10 # emerge --info Portage 2.1 (default-linux/amd64/2006.0, gcc-4.1.1/amd64-vanilla, glibc-2.3.6-r3, 2.6.16-gentoo-r9 x86_64) ================================================================= System uname: 2.6.16-gentoo-r9 x86_64 AMD Athlon(tm) 64 Processor 3000+ Gentoo Base System version 1.6.14 dev-lang/python: 2.3.5-r2, 2.4.2 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.17 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: 2.15.92.0.2-r1, 2.15.92.0.2-r10, 2.16.1-r2 sys-devel/gcc-config: 1.3.13-r2 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=athlon64 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/lib64/mozilla/defaults/pref /usr/share/X11/xkb /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/" CONFIG_PROTECT_MASK="/etc/env.d /etc/eselect/compiler /etc/gconf /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-march=athlon64 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig ccache distlocks metadata-transfer parallel-fetch sandbox sfperms strict" GENTOO_MIRRORS="ftp://mirrors1.netvisao.pt/gentoo/ ftp://ftp.rnl.ist.utl.pt/pub/gentoo/ ftp://ftp.belnet.be/mirror/rsync.gentoo.org/gentoo/ ftp://194.117.143.69/mirrors/gentoo http://pandemonium.tiscali.de/pub/gentoo/" LANG="pt_PT.utf8" LC_ALL="pt_PT.utf8" LINGUAS="pt en" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="amd64 16bit 3dnowex 4kstacks 7zip X Xaw3d a52 aac aalib acpi acpi4linux aim alsa amuled apache2 artworkextra audiofile avahi bacula-console bash-completion beagle beepmp berkdb bitmap-fonts bonobo bzlib cairo cddb cdparanoia cdr chroot cli client codecs crypt css cups curlwrappers daap dbase dbm dbus dga dio divx4linux djvu dnd doc dri dts dv dvb dvd dvdr dvdread dvi editor edl eds effects emacs emboss encode evo expat extensions fame fbcon ffmpeg firefox flac flash flatfile fluidsynth fontconfig foomaticdb fortran freetype gb gcj gdbm gif gimp gimpprint glade glibc-omitfp glitz gmail gnome gnome-print gnomedb gnutls gpm graphviz gs gstreamer gstreamer010 gtk gtk2 gtkhtml guile gzip hal howl-compat icq ieee1394 imap imlib imlib2 inifile inkjar innodb input_devices_joystick input_devices_keyboard input_devices_mouse input_devices_vmmouse ipod ipv6 isdnlog jabber jack java javacomm javascript jikes joystick jpeg jpeg2k kde koffice-plugin ladcca ladspa leim libcaca libclamav libdsk libgda libnotify libsamplerate linguas_pt linguas_pt_PT lirc live lm_sensors lmtp logrotate lzo lzw lzw-tiff mad madwifi maildir mailwrapper matroska mbox mdb mdnsresponder-compat mikmod mime mjpeg mmap mng monkey mono mozcalendar mozsvg mp3 mpeg mpeg4 mpi mplayer msn mssql muine mule multislot musepack musicbrainz mysqli mythtv native nautilus ncurses net network nls no-old-linux nptl nsplugin ntlm nvidia oav objc objc++ objc-gc offensive ogg opengl oscar pam pcre pdf pdflib perl physfs pic pie plotutils png portaudio ppds pppd python qemu-fast qt quicktime rar readline reflection rtsp samba sdl sendfile session shared sharedmem silc skey slp smime sms sndfile socks5 sox speex spell spl sqlite3 ssl subtitles svg sysvipc szip t1lib talkfilters tcltk tcpd theora threads tidy tiff transcode truetype truetype-fonts type1 type1-fonts udev unicode usb utf8 uudeview v4l v4l2 vcd vcdimager video_cards_nv video_cards_nvidia video_cards_vmware vim-pager vim-with-x vorbis wxwindows x264 xanim xchattext xface xinerama xml xorg xosd xpm xrandr xscreensaver xv xvid xvmc yahoo yv12 zlib elibc_glibc kernel_linux linguas_en lirc_devices_pctv userland_GNU" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS
~amd64 added, amongst other cleanups