I putted ~amd64 to the ctwm-3.7.ebuild, ebuilded and digested it. Emerged ctwm, it worked. Have it running now for about six hours without any errors or faults, have restarted it several times due to .ctwmrc editing, and it runs as stable as anything. So I think that the ctwm-3.7 atleast can get ~amd64 support Reproducible: Always Steps to Reproduce: 1. 2. 3.
Indeed, works fine. Please mark ~amd64 Jim Portage 2.0.51.22-r2 (default-linux/amd64/2005.1, gcc-3.4.4, glibc-2.3.5-r1, 2.6.12-gentoo-r9 x86_64) ================================================================= System uname: 2.6.12-gentoo-r9 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" 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 avi berkdb bitmap-fonts browserplugin cdb cdr crypt cups curl directfb dvd dvdr dvdread eds encode esd fam flac foomaticdb fortran freetype 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 ncurses nls nocd nvidia ogg oggvorbis opengl oss pam pdflib perl pic png python qt quicktime readline real ruby samba sdl spell ssl symlink tcltk tcpd tetex theora tiff truetype truetype-fonts type1-fonts usb userlocales v4l vcd vorbis xine xml2 xpm xv zlib linguas_en_GB userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS
Marked ~amd64. Thanks for reporting and testing.