cups uses /usr/libexec/cups/backend/ for its backend dir, but hal-cups-utils installs into /usr/lib/cups/backend/ $ qlist -e cups | grep backend/ /usr/libexec/cups/backend/snmp /usr/libexec/cups/backend/usb /usr/libexec/cups/backend/parallel /usr/libexec/cups/backend/serial /usr/libexec/cups/backend/https /usr/libexec/cups/backend/socket /usr/libexec/cups/backend/scsi /usr/libexec/cups/backend/lpd /usr/libexec/cups/backend/ipp /usr/libexec/cups/backend/http $ qlist -e hal-cups-utils | grep backend/ /usr/lib/cups/backend/hal $ qlist -I -v hal-cups-utils app-misc/hal-cups-utils-0.6.19
Portage 2.2_rc49 (default/linux/amd64/10.0/developer, gcc-4.4.2, glibc-2.11-r0, 2.6.31.4 x86_64) ================================================================= System uname: Linux-2.6.31.4-x86_64-AMD_Phenom-tm-_II_X4_945_Processor-with-gentoo-2.0.1 Timestamp of tree: Sat, 14 Nov 2009 07:30:01 +0000 distcc 3.1 x86_64-pc-linux-gnu [disabled] ccache version 2.4 [enabled] app-shells/bash: 4.0_p35 dev-java/java-config: 1.3.7-r1, 2.1.9-r1 dev-lang/python: 2.6.4, 3.1.1-r1 dev-python/pycrypto: 2.1.0_beta1 dev-util/ccache: 2.4-r8 dev-util/cmake: 2.6.4-r3 sys-apps/baselayout: 2.0.1 sys-apps/openrc: 0.5.2-r2 sys-apps/sandbox: 2.3 sys-devel/autoconf: 2.13, 2.64 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2, 1.11 sys-devel/binutils: 2.15.92.0.2-r10, 2.16-r1, 2.16.1, 2.16.1-r3, 2.16.90.0.3, 2.16.91.0.1, 2.16.91.0.2, 2.16.91.0.3, 2.16.91.0.4, 2.16.91.0.5, 2.16.91.0.6, 2.16.91.0.7, 2.16.92, 2.16.93, 2.16.94, 2.17-r1, 2.17.50.0.2, 2.17.50.0.3, 2.17.50.0.4, 2.17.50.0.5, 2.17.50.0.6, 2.17.50.0.7, 2.17.50.0.8, 2.17.50.0.9, 2.17.50.0.10, 2.17.50.0.11, 2.17.50.0.12, 2.17.50.0.13, 2.17.50.0.14, 2.17.50.0.15, 2.17.50.0.16, 2.17.50.0.17, 2.17.50.0.18, 2.18-r2, 2.18.50.0.1, 2.18.50.0.2, 2.18.50.0.3, 2.18.50.0.4, 2.18.50.0.5, 2.18.50.0.6, 2.18.50.0.7, 2.18.50.0.8, 2.18.50.0.9, 2.19, 2.19.1-r1, 2.19.50.0.1, 2.19.51.0.1, 2.19.51.0.2, 2.19.51.0.3, 2.19.51.0.4, 2.19.51.0.5, 2.19.51.0.6, 2.19.51.0.10, 2.19.51.0.11, 2.19.51.0.12, 2.19.51.0.14, 2.20, 2.20.51.0.1, 2.20.51.0.2 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64 ~amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=k8 -pipe -g -Wimplicit-function-declaration" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/eselect/postgresql /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d" CPPFLAGS="-DCPPFLAGS_TEST" CXXFLAGS="-O2 -march=k8 -pipe -g" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--nospinner" FEATURES="assume-digests buildsyspkg ccache collision-protect cvs distlocks fixpackages multilib-strict news noinfo parallel-fetch preserve-libs protect-owned sandbox sfperms sign splitdebug stricter unmerge-logs unmerge-orphans userfetch userpriv usersandbox" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LANG="en_US.UTF8" LDFLAGS="-Wl,-O1 -Wl,-z,relro" LINGUAS="en en_US de" MAKEOPTS="-j8" PKGDIR="/usr/portage/packages" PORTAGE_COMPRESS="lzma" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage /usr/local/src/gentoo/overlays/vapier/enlightenment" SYNC="rsync://gentoo/gentoo-portage" USE="3dnow X a52 aac aalib accessibility acl acpi adns agg aio alsa amd64 apache2 asf audiofile berkdb bitmap-fonts bzip2 cairo caps cdaudio cddb cdparanoia cdr cli console cracklib crypt ctype cups curl cvs dba dbus divx4linux dri dts dvb dvd dvdr dvdread emboss encode evo exif expat fbcon ffmpeg firefox flac flash fortran ftp gcj gd gif glib glitz glut gmp gphoto2 gpm gtk gtk2 htmlhandbook iconv imap imlib ipv6 jbig joystick jpeg jpeg2k kde kpathsea lcms libcaca libedit libnotify lzo lzw mad maildir matroska mikmod mime mjpeg mmx mng modplug modules mp3 mp4 mpeg mplayer mtp mudflap multilib multislot musepack mysql ncurses network nls nptl nptlonly nsplugin nvidia objc objc-gc offensive ogg oggvorbis openal opengl openmp pcre pdf perl pic png ppds pppd pulseaudio python qt3support qt4 quicktime readline redland reflection samba sdl session sndfile snmp speex spell spl sql sqlite sse sse2 ssl startup-notification subtitles subversion svg sysfs syslog tcl tcltk tcpd tga theora threads thunar tiff tk truetype truetype-fonts type1-fonts unicode upnp usb vcd video vnc vorbis webkit wma wmf x264 xanim xattr xcb xcomposite xine xinerama xinetd xml xml2 xorg xpm xrandr xulrunner xv xvid xvmc zip zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CAMERAS="canon" ELIBC="glibc" INPUT_DEVICES="mouse keyboard joystick void" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_US de" USERLAND="GNU" VIDEO_CARDS="nvidia nv ati r128 radeon radeonhd vga sisusb" Unset: CTARGET, FFLAGS, INSTALL_MASK, LC_ALL, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Fixed, thanks.
Created attachment 210461 [details, diff] patch to use cups-config to determine directory This patch adds a --with-cups-backend=<dir> argument to configure, as well as changing the default from ${prefix}/lib/cups/backend to `cups-config --serverbin`/backend, which should work in just about every scenario. In this case, the only change needed in the ebuild is epatch+eautoreconf in src_prepare (no changes needed to src_configure).
