Upon emerging this package emerge sent me an e-mail containing the following: WARN: unpack QA Notice: ${WANT_AUTOCONF} variable unset. Please report on http://bugs.gentoo.org/ $ emerge --info Portage 2.1.1-r2 (default-linux/amd64/2006.0, gcc-4.1.1, glibc-2.4-r4, 2.6.17-gentoo-r8 x86_64) ================================================================= System uname: 2.6.17-gentoo-r8 x86_64 AMD Athlon(tm) 64 Processor 3500+ Gentoo Base System version 1.12.6 Last Sync: Mon, 08 Jan 2007 13:30:01 +0000 ccache version 2.3 [enabled] app-admin/eselect-compiler: [Not Present] dev-java/java-config: 1.3.7, 2.0.31 dev-lang/python: 2.4.3-r4 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: 2.3 dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.60 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.16.1-r3 sys-devel/gcc-config: 1.3.14 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 -pipe -fomit-frame-pointer -O2" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/NX/etc /usr/NX/home /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c" CXXFLAGS="-march=k8 -pipe -fomit-frame-pointer -O2" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig buildpkg ccache distcc distlocks metadata-transfer parallel-fetch sandbox sfperms strict" GENTOO_MIRRORS="ftp://distro.ibiblio.org/pub/linux/distributions/gentoo/ http://gentoo.gg3.net/ http://ftp.gentoo.or.kr/ http://mirror.gentoo.gr.jp" MAKEOPTS="-j2" PKGDIR="/binpkg" 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 /usr/local/initng-portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="amd64 X aac alsa alsa_cards_ali5451 alsa_cards_als4000 alsa_cards_atiixp alsa_cards_atiixp-modem alsa_cards_bt87x alsa_cards_ca0106 alsa_cards_cmipci alsa_cards_emu10k1x alsa_cards_ens1370 alsa_cards_ens1371 alsa_cards_es1938 alsa_cards_es1968 alsa_cards_fm801 alsa_cards_hda-intel alsa_cards_intel8x0 alsa_cards_intel8x0m alsa_cards_maestro3 alsa_cards_trident alsa_cards_usb-audio alsa_cards_via82xx alsa_cards_via82xx-modem alsa_cards_ymfpci alsa_pcm_plugins_adpcm alsa_pcm_plugins_alaw alsa_pcm_plugins_asym alsa_pcm_plugins_copy alsa_pcm_plugins_dmix alsa_pcm_plugins_dshare alsa_pcm_plugins_dsnoop alsa_pcm_plugins_empty alsa_pcm_plugins_extplug alsa_pcm_plugins_file alsa_pcm_plugins_hooks alsa_pcm_plugins_iec958 alsa_pcm_plugins_ioplug alsa_pcm_plugins_ladspa alsa_pcm_plugins_lfloat alsa_pcm_plugins_linear alsa_pcm_plugins_meter alsa_pcm_plugins_mulaw alsa_pcm_plugins_multi alsa_pcm_plugins_null alsa_pcm_plugins_plug alsa_pcm_plugins_rate alsa_pcm_plugins_route alsa_pcm_plugins_share alsa_pcm_plugins_shm alsa_pcm_plugins_softvol apache2 berkdb bitmap-fonts cli cracklib crypt cups curl dlloader dri dvd dvdr dvdread eds elibc_glibc emacs emboss encode ffmpeg flac foomaticdb fortran gif gimpprint gpm gstreamer gtk gtk2 i8x0 iconv imagemagick imlib input_devices_keyboard input_devices_mouse ipv6 isdnlog java jpeg kernel_linux libwww live lzw lzw-tiff mad mono mp3 mpeg musepack ncurses nls nptl nptlonly nsplugin nvidia opengl pam pcre perl png pppd python qt qt3 qt4 quicktime readline reflection sdl session spell spl ssl svg tcpd tetex tga theora tiff truetype truetype-fonts type1-fonts unicode usb userland_GNU v4l v4l2 video_cards_nvidia vorbis wxwindows xanim xinerama xml xorg xpm xv xvid zlib" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTAGE_RSYNC_EXTRA_OPTS
we've taken the route of defaulting to latest in the eclass: http://sources.gentoo.org/viewcvs.py/gentoo-x86/eclass/autotools.eclass?r1=1.62&r2=1.63
