I have a relatively new Gentoo install (seasoned user, new laptop) with an AMD Turion(tm) 64 X2 Mobile Technology TL-60 processor. When using Kino as a frontend to media-video/mjpegtools-1.9.0 I noticed the encoding extremely SLOOOWWWWW. Digging around, the mmx USE flag was disabled in the AMD64 10.0 desktop profile and AMD 64 architecture. When I commented out the lines in the appropriate files (/usr/portage/profiles/arch/amd64/package.use.mask and /usr/portage/profiles/default-linux/amd64/package.use.mask) and recompiled the package with the mmx flag set, it compiles fine, appears to work fine, and encodes about ten times faster. The use flag was forced off over three years ago. Perhaps the package has changed enough since then... Reproducible: Always
Portage 2.1.6.13 (default/linux/amd64/10.0/desktop, gcc-4.3.2, glibc-2.9_p20081201-r2, 2.6.30-gentoo-r5 x86_64) ================================================================= System uname: Linux-2.6.30-gentoo-r5-x86_64-AMD_Turion-tm-_64_X2_Mobile_Technology_TL-60-with-gentoo-1.12.13 Timestamp of tree: Sat, 28 Nov 2009 05:30:01 +0000 app-shells/bash: 4.0_p28 dev-java/java-config: 2.1.9-r1 dev-lang/python: 2.6.2-r1 dev-util/cmake: 2.6.4 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.63-r1 sys-devel/automake: 1.7.9-r1, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.27-r2 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=athlon64 -O2 -pipe -fstack-protector -D_FORTIFY_SOURCE=2" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-march=athlon64 -O2 -pipe -fstack-protector -D_FORTIFY_SOURCE=2" DISTDIR="/var/backup/src" FEATURES="buildpkg distlocks fixpackages noinfo parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://ftp.ussg.iu.edu/pub/linux/gentoo http://gentoo.oregonstate.edu http://distfiles.gentoo.org http://www. ibiblio.org/pub/Linux/distributions/gentoo" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1" LINGUAS="en en_US" MAKEOPTS="-j3" PKGDIR="/var/backup" 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="/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="3dnow X a52 aac acl acpi alsa amd64 automount berkdb bluetooth branding bzip2 cairo caps cdr cli consolekit cracklib crypt cups dbus dri dts dv dvd dvdr eds emboss encode evo exif fam ffmpeg firefox flac fontforge fortran gdbm gif gnome gnome-keyring gpm gstreamer gtk hal iconv jack java jpeg kde ladspa lame ldap libnotify mad mikmod mmx modules mp3 mp4 mpeg mudflap multilib mysql nautilus ncurses networkmanager nls nptl nptlonly ogg opengl openmp pam pcre pdf perl png policykit ppds pppd python qt3support qt4 quicktime readline reflection scsi sdl session spell spl sql sse sse2 ssl startup-notification svg sysfs thunar tiff truetype unicode usb vorbis webkit x264 xml xorg xulrunner xv xvid zlib" ALSA_CARDS="hda_intel" 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse synaptics evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_US" USERLAND="GNU" VIDEO_CARDS="vesa radeon" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
Indeed, there is a x86_64 support now... verified by building, and configure.ac. Unmasked.
