There is an error in the ebuild at line 41. Replacing "use_enable v4l2" with "use_with v4l2" seems to fix the error. (But the compile still fails due to previously reported bug #52071). Reproducible: Always Steps to Reproduce: 1. 2. 3. Portage 2.0.50-r7 (default-x86-1.4, gcc-3.3.3, glibc-2.3.3_pre20040420-r0, 2.6.7-rc2) ================================================================= System uname: 2.6.7-rc2 i686 Intel(R) Pentium(R) 4 CPU 2.53GHz Gentoo Base System version 1.4.15 Autoconf: sys-devel/autoconf-2.59-r4 Automake: sys-devel/automake-1.8.5 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CFLAGS="-march=pentium4 -mcpu=pentium4 -mfpmath=sse -fforce-addr -fstack-protector -pipe -O3 -fprefetch-loop-arrays" CHOST="i686-pc-linux-gnu" COMPILER="gcc3" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.2/share/config /usr/kde/3/share/config /usr/lib/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="-march=pentium4 -mcpu=pentium4 -mfpmath=sse -fforce-addr -fstack-protector -pipe -O3" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs ccache fixpackages sandbox strict" GENTOO_MIRRORS="http://gentoo.oregonstate.edu http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/overlays/portage /usr/local/overlays/bmg-main /usr/local/overlays/bmg-gnome-current" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X X509 aac aalib adns alsa antlr apm arts audiofile avi bcel berkdb bindist bsh canna caps cdr chasen cjk crypt cups dillo directfb djbfft dnd dv dvd dvdr encode expat faad fam flac flash fltk foomaticdb freetype freewnn fs gdbm gif gnome gnomedb gpm gstreamer gtk gtk2 guile hbci imap imlib imlib2 ipv6 jack jack-tmpfs java javamail javascript jbig jdepend jikes jpeg jsch junit kakasi kde lcd ldap libg++ libwww lirc log4j ltsp lufsusermount mad maildir md5sum mikmod mmx motif mozcalendar mozilla moznoirc mpeg mysql nas ncurses nls nocd nopri nptl oggvorbis opengl openssh optional-tasks oro pam pda pdflib perl plotutils png portaudio postgres ppds python qt quicktime readline regexp rhino ruby samba sdl slang slp sndfile spell sse ssl svga tcltk tcpd tiff transcode truetype type1 unicode v4l2 wmf x86 xalan xerces xface xml2 xmms xv xvid zlib"
fixed.. actually only --disable-v4l2 is valid .. --enable breaks it..