After 30 minutes of no apparent progress I interrupted my "emerge -auD world". make[4]: Entering directory `/var/tmp/portage/graphviz-1.16-r1/work/graphviz-1.16/tools/sfio/Sfio_dc' mkdir -p ../../../FEATURE sh ../../../iffe - set cc x86_64-pc-linux-gnu-gcc : run ../../../tools/sfio/features/sfio > ../../../FEATURE/sfio sandbox: Caught signal 2 in pid 21487 make[4]: *** Deleting file `../../../FEATURE/sfio' the file Fcomp6201.exe had chewed up more than 20 minutes of CPU time. My emerge info: compare ~ # emerge info Portage 2.0.51.22-r3 (default-linux/amd64/2005.0, gcc-3.4.4, glibc-2.3.5-r2, 2.6.12-gentoo-r10 x86_64) ================================================================= System uname: 2.6.12-gentoo-r10 x86_64 AMD Athlon(tm) 64 Processor 3200+ Gentoo Base System version 1.6.13 dev-lang/python: 2.3.5-r2, 2.4.2 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-r1 sys-devel/binutils: 2.15.92.0.2-r10 sys-devel/libtool: 1.5.20 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /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/lib64/mozilla/defaults/pref /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/terminfo /etc/env.d" CXXFLAGS="-O2" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://ftp.belnet.be/mirror/rsync.gentoo.org/gentoo/ http://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://194.117.143.71/mirrors/gentoo http://194.117.143.70" 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 alsa ansi arts avi berkdb bitmap-fonts bonobo cdr clisp crypt cups curl doc dvd dvdr eds emboss encode esd fam flac foomaticdb fortran gcl gd gdbm gif gnome gpm gstreamer gtk gtk2 gtkhtml guile imagemagick imlib ipv6 java jpeg kde ldap libwww lm-sensors lzw lzw-tiff mad mikmod motif mozilla mp3 mpeg mysql ncurses nls ogg oggvorbis opengl pam pda pdflib perl png postgres python qt quicktime readline ruby samba sdl speex spell ssl tcltk tcpd tetex tiff truetype truetype-fonts type1-fonts unicode usb userlocales vorbis xine xml xml2 xmms xpm xv zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS
At a second try (emerge under strace) the ebuild installed correctly. Priority and severity lowered appropriately.
Closing then, not reproducable.