The ebuild macbook-backlight is masked with reason "missing keyword". I am reporting that the application was tested in amd64 arch (Gentoo 2006.1 on a MacBook) and worked flawlessly. Thanks in advance.
please supply your emerge --info This emerges fine and seems to work here, can't really test it though as I don't have the hardware. Portage 2.1.2.2 (default-linux/amd64/2007.0, gcc-4.1.1, glibc-2.5-r0, 2.6.20-gentoo-r6 x86_64) ================================================================= System uname: 2.6.20-gentoo-r6 x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ Gentoo Base System release 1.12.9 Timestamp of tree: Sat, 21 Apr 2007 14:20:01 +0000 ccache version 2.4 [disabled] dev-lang/python: 2.4.3-r4 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: 2.4-r6 sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.61 sys-devel/automake: 1.7.9-r1, 1.9.6-r2, 1.10 sys-devel/binutils: 2.16.1-r3 sys-devel/gcc-config: 1.3.15-r1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.17-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=k8 -O2 -pipe -msse3" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/php/apache1-php5/ext-active/ /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-march=k8 -O2 -pipe -msse3" DISTDIR="/usr/portage/distfiles" FEATURES="buildsyspkg collision-protect distlocks metadata-transfer multilib-strict parallel-fetch sandbox sfperms strict test userfetch userpriv usersandbox" GENTOO_MIRRORS="ftp://linux.rz.ruhr-uni-bochum.de/gentoo-mirror/ ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo ftp://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ ftp://ftp.gentoo.mesh-solutions.com/gentoo/ ftp://pandemonium.tiscali.de/pub/gentoo/ " LANG="en_US.UTF8" LC_ALL="en_US.UTF8" MAKEOPTS="-j3 -l3" 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 --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="acl amd64 berkdb bitmap-fonts cgi cli cracklib crypt cups dri fortran gdbm gpm iconv ipv6 isdnlog libg++ midi mmx ncurses nptl nptlonly pam pcre perl pppd python readline reflection session spl sse sse2 ssl tcpd test truetype-fonts type1-fonts unicode xorg zlib" ALSA_CARDS="emu10k1" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="evdev keyboard" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIRC_DEVICES="inputlirc" USERLAND="GNU" VIDEO_CARDS="nvidia" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
fixed in cvs, thanks