Tested here works fine. Depends on sys-libs/lib-compat so please mark sys-libs/lib-compat-1.4 ~amd64 as well Jim Portage 2.0.51.22-r2 (default-linux/amd64/2005.1, gcc-3.4.4, glibc-2.3.5-r1, 2.6.13-gentoo-r1 x86_64) ================================================================= System uname: 2.6.13-gentoo-r1 x86_64 AMD Athlon(tm) 64 Processor 3200+ Gentoo Base System version 1.6.13 dev-lang/python: 2.3.5, 2.4.1-r1 sys-apps/sandbox: 1.2.12 sys-devel/autoconf: 2.13, 2.59-r6 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6 sys-devel/binutils: 2.15.92.0.2-r10 sys-devel/libtool: 1.5.18-r1 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=athlon64 -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/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" CONFIG_PROTECT_MASK="/etc/gconf /etc/splash /etc/terminfo /etc/env.d" CXXFLAGS="-O2 -march=athlon64 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks multilib-strict sandbox sfperms strict" GENTOO_MIRRORS="http://gentoo.blueyonder.co.uk http://mirror.gentoo.gr.jp http://ftp.gentoo.or.kr/ ftp://mirror.nutsmaas.nl/gentoo/" LINGUAS="en_GB" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X aac alsa amarok amd64 apache2 avi berkdb bitmap-fonts browserplugin cdb cdr crypt curl directfb dvd dvdr dvdread eds emboss encode esd fam flac foomaticdb fortran freetype gd gdbm gif gphoto2 gpm gstreamer gtk gtk2 guile hal imagemagick imlib ipv6 java jpeg junit kde kdeenablefinal libwww lzw lzw-tiff mad mikmod mp3 mpeg mplayer msn musicbrainz mysql ncurses nls nocd nvidia ogg oggvorbis opengl oss pam pdflib perl pic png python qt quicktime readline real ruby samba sdl speex spell ssl symlink tcltk tcpd tetex theora tiff truetype truetype-fonts type1-fonts usb userlocales v4l vcd vorbis xine xml xml2 xpm xv zlib linguas_en_GB userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS
doesn't work here, and lib-compat doesn't work either on amd64