Bugzilla Bug 140283

I have a slotted install of versions 1.2.1 and 2.0.0_pre7-r1 of
media-libs/libdc1394

I think pwlib should build but it doesn't.

emerge -pv dev-libs/pwlib

These are the packages that would be merged, in order:

Calculating dependencies... done!
[blocks B     ] >=media-libs/libdc1394-2.0.0_pre1 (is blocking
dev-libs/pwlib-1.10.1)
[ebuild  N    ] dev-libs/pwlib-1.10.1  USE="alsa ieee1394 ldap oss sdl ssl v4l
v4l2 xml -debug -ipv6 -sasl" 1,450 kB



emerge --info
Portage 2.1.1_pre2-r8 (default-linux/x86/2006.0, gcc-4.1.1/vanilla,
glibc-2.4-r3, 2.6.17-gentoo i686)
=================================================================
                       System Settings
=================================================================
System uname: 2.6.17-gentoo i686 AMD Sempron(TM) 2400+
Gentoo Base System version 1.12.1
app-admin/eselect-compiler: 2.0.0_rc2-r1
dev-lang/python:     2.4.3-r1
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     [Not Present]
dev-util/confcache:  [Not Present]
sys-apps/sandbox:    1.2.18.1
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:  2.17
sys-devel/gcc-config: 2.0.0_rc1
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.11-r5
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config
/usr/kde/3.5/shutdown /usr/lib/mozilla/defaults/pref /usr/share/X11/xkb
/usr/share/config /var/qmail/alias /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/eselect/compiler
/etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/splash /etc/terminfo
/etc/texmf/web2c"
CXXFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict"
GENTOO_MIRRORS="http://mirror.datapipe.net/gentoo
ftp://mirror.datapipe.net/gentoo
http://gentoo.mirrors.easynews.com/linux/gentoo/
ftp://gentoo.mirrors.tds.net/gentoo http://gentoo.mirrors.tds.net/gentoo"
LANG="es_AR.ISO-8859-1"
LC_ALL="es_AR.ISO-8859-1"
LINGUAS="es-AR es-ES en es"
MAKEOPTS="-j1"
PKGDIR="/usr/portage/packages"
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/overlays/migration-overlay"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="x86 3dnow 3dnowext 7zip X Xaw3d a52 aac aalib acl acpi addbookmarks aim
akode alias alsa amarok amazon amuled apache2 apm aqua_theme arts asf
autoreplace avalon avi bash-completion berkdb big-tables bitmap-fonts blas
bootsplash browserplugin bzip2 cairo calendar carbone_theme ccache cdb cddb
cdparanoia cdr cgi chroot clamav cli connectionstatus contactnotes cracklib
crypt css ctype cups curl dbus directfb dlloader dri dts dvd dvdr dvdread
effects emacs emboss encode esd exif expat exscalibar fam fame fat fbcon fbdev
ffmpeg fftw firefox flac flash foomaticdb fortran ftp gadu gd gdbm gecko-sdk
geoip gif gimp gimpprint glgd glibc-omitfp glitz glut glx gmail gmp gnome
gnutls gphoto2 gpm graphviz groupwise gs gstreamer010 gtalk gtk gtk2 hal
haskell hfs highlight history hpn iconv icq id3 idn ieee1394 ilbc imagemagick
imap imlib imlib2 inkjar innodb insecure-savers iproute2 irc isdnlog j2ee jack
java javascript jce jfs jingle joystick jpeg jpeg2k junit kcal kde
kdehiddenvisibility kdepim kerberos kexi kipi krb4 lame lapack latex lcms ldap
libcaca libclamav libg++ libsamplerate libvisual libwww lirc lm_sensors
logrotate lzo mad maildir maps matroska mhash mikmod mime mjpeg mmx mmxext mng
mono motif mozcalendar mozdevelop mozilla mozsvg mozxmlterm mp3 mpeg mpeg2
mpeg4 mplayer mpm-worker msn msnextras mudflap musepack music musicbrainz mysql
mythtv nas ncurses netbeans netmeeting nls nowlistening nptl nptlonly nsplugin
ntfs nvidia objc objc++ ofx ogg openal openexr opengl openssl ortp oss pam
pascal pcntl pcre pdf pdflib pear perl php pic plugin png posix postgres povray
pppd python qmail qt qt3 qt4 quicktime quotas rar rdesktop readline real
reflection reiserfs remote rpc rtc ruby samba sametime scanner scp sdl sensord
server servlet-2.4 session slang slp sms soap sockets sou sounds spamassassin
speex spell spl sql sqlite sqlite3 sse sse-filters ssl statistics struts subp
subtitles subversion svg svga svgz sysvipc t1lib taglib tcltk tcpd tetex
texteffect theora thesaurus threads tidy tiff tokenizer tools transcode
translator truetype truetype-fonts type1 type1-fonts udev unicode usb
userlocales v4l v4l2 vcd vcdimager vfat video_cards_nv video_cards_nvidia
video_cards_vesa video_cards_vmware videos virus-scan visualization vlm vorbis
vorbis-psy webpresence win32codecs winbind wma wma123 wmf wxgtk1 wxwindows
xanim xcomposite xft xine xml xml2 xmlreader xmlrpc xmlwriter xorg xosd xrandr
xscreensaver xsl xslt xv xvid xvmc yahoo yaz yv12 zip zlib zvbi elibc_glibc
input_devices_keyboard input_devices_mouse input_devices_vmmouse kernel_linux
linguas_es-AR linguas_es-ES linguas_en linguas_es userland_GNU video_cards_apm
video_cards_v4l"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS,
PORTAGE_RSYNC_EXTRA_OPTS

Fixed in 1.10.2, thanks