i've been noticing lately that the output of emerge -pv is giving me some
interesting output:
$ emerge -pv mplayer
These are the packages that I would merge, in order:
Calculating dependencies ...done!
[ebuild R ] media-video/mplayer-1.0_pre6-r5 (-3dfx) (-3dnow) +3dnowext
+X -aalib +alsa (-altivec) -arts +avi -bidi -bl +cdparanoia +debug +dga
-directfb (-divx4linux) -doc +dts +dv +dvb +dvd +dvdread +edl +encode -esd
-fbcon -ggi +gif -gtk +i8x0 -ipv6 -jack -joystick +jpeg -libcaca -lirc -live
+lzo +mad -matroska -matrox (-mmx) (-mmxext) +mpeg -mythtv -nas +nls -nvidia
+oggvorbis +opengl -oss +png +real +rtc -samba -sdl (-sse) (-sse2) (-svga)
+tga +theora +truetype +v4l +v4l2 -xanim -xinerama +xmms +xv +xvid -xvmc 0kB
what i'm trying to understand here is why so many of the above flags are in
brackets and marked with a "-" even though they're clearly enabled in my
make.conf file as flags i want to use. most important being mmx, sse, sse2
and divx4linux.
can someone please explain to me why these flags are being ignored and what
those brackets mean? if you're interested, here's my USE variable in
make.conf (i used app-portage/ufed):
USE="-* 3dnow 3dnowex 3dnowext X aac acl acpi acpi4linux aim alsa amarok
audiofile avantgo avi berkdb bzip2 bzlib cdda cdio cdparanoia cdr
chroot codecs css curl debug dga dio divx4linux dnd dts dv dvb dvd
dvdr dvdread edl encode exif extraicons faad ffmpeg freetype ftp gd
geoip gif gpgme gstreamer i8x0 icq jabber java javascript jpeg
jpeg2k kde kdepim libclamav libgd libwww lm_sensors logitech-mouse
lzo lzw-tiff mad maildir md5sum mmx mmxext motif moznocompose
moznoirc moznomail moznoxft mozp3p mozsvg mp3 mpeg mpeg4 mplayer
msn ncurses network nls no-old-linux noamazon nocd oav offensive
ogg oggvorbis openal opengl pam pam_chroot pam_timestamp pda pdf
pdflib perl png posix povray python qt quicktime rar real rtc sdk
session smime sms sox spamassassin spell sql sqlite sqlite3 sse
sse2 ssl svg svga tga theora tidy tiff transcode truetype
truetype-fonts type1-fonts usb v4l v4l2 vcd vcdimager wmf xface
xine xml xml2 xmms xosd xsl xv xvid yahoo zlib"
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