>>> Unpacking source...
>>> Unpacking xvidcore-1.2.2.tar.bz2 to /var/tmp/portage/media-libs/xvid-1.2.2-r1/work
>>> Source unpacked in /var/tmp/portage/media-libs/xvid-1.2.2-r1/work
>>> Preparing source in /var/tmp/portage/media-libs/xvid-1.2.2-r1/work/xvidcore/build/generic ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/media-libs/xvid-1.2.2-r1/work/xvidcore/build/generic ...
 * econf: updating xvidcore/build/generic/config.sub with /usr/share/gnuconfig/config.sub
 * econf: updating xvidcore/build/generic/config.guess with /usr/share/gnuconfig/config.guess
./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --libdir=/usr/lib64
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking target system type... x86_64-pc-linux-gnu
checking whether to use default CFLAGS... no
checking for x86_64-pc-linux-gnu-gcc... x86_64-pc-linux-gnu-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether x86_64-pc-linux-gnu-gcc accepts -g... yes
checking for x86_64-pc-linux-gnu-gcc option to accept ANSI C... none needed
checking for a BSD-compatible install... /usr/bin/install -c
checking for x86_64-pc-linux-gnu-ranlib... x86_64-pc-linux-gnu-ranlib
checking for whether to use assembly code... yes
checking for architecture type... x86_64
checking how to run the C preprocessor... x86_64-pc-linux-gnu-gcc -E
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for int *... yes
checking size of int *... 8
checking whether byte ordering is bigendian... no
checking for build extensions... .so .a .o
checking for platform specific LDFLAGS/CFLAGS... ok
checking for yasm... yes
checking for yasm version... 7
configure: WARNING: yasm version is too old
checking for nasm... yes
checking for nasm version... 2
checking for asm object format... elf64
checking stdio.h usability... yes
checking stdio.h presence... yes
checking for stdio.h... yes
checking signal.h usability... yes
checking signal.h presence... yes
checking for signal.h... yes
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking assert.h usability... yes
checking assert.h presence... yes
checking for assert.h... yes
checking math.h usability... yes
checking math.h presence... yes
checking for math.h... yes
checking pthread.h usability... yes
checking pthread.h presence... yes
checking for pthread.h... yes
checking for pthread_create in -lpthread... yes
checking for pthread_join in -lpthread... yes
configure: creating ./config.status
config.status: creating platform.inc
>>> Source configured.
>>> Compiling source in /var/tmp/portage/media-libs/xvid-1.2.2-r1/work/xvidcore/build/generic ...
make -j2 
  D: =build
  C: ./decoder.c
  C: ./encoder.c
  C: ./xvid.c
  C: bitstream/bitstream.c
  C: bitstream/cbp.c
  C: bitstream/mbcoding.c
  C: dct/fdct.c
  C: dct/idct.c
  C: dct/simple_idct.c
  C: image/colorspace.c
  C: image/image.c
  C: image/interpolate8x8.c
  C: image/font.c
  C: image/postprocessing.c
  C: image/qpel.c
  C: image/reduced.c
  C: motion/estimation_bvop.c
  C: motion/estimation_common.c
  C: motion/estimation_gmc.c
  C: motion/estimation_pvop.c
  C: motion/estimation_rd_based.c
  C: motion/estimation_rd_based_bvop.c
  C: motion/gmc.c
  C: motion/motion_comp.c
  C: motion/vop_type_decision.c
  C: motion/sad.c
  C: prediction/mbprediction.c
  C: plugins/plugin_single.c
  C: plugins/plugin_2pass1.c
  C: plugins/plugin_2pass2.c
  C: plugins/plugin_lumimasking.c
  C: plugins/plugin_dump.c
  C: plugins/plugin_psnr.c
  C: plugins/plugin_ssim.c
  C: quant/quant_h263.c
  C: quant/quant_matrix.c
  C: quant/quant_mpeg.c
  C: utils/emms.c
  C: utils/mbtransquant.c
  C: utils/mem_align.c
  C: utils/mem_transfer.c
  C: utils/timer.c
  A: bitstream/x86_asm/cbp_mmx.asm
  A: bitstream/x86_asm/cbp_sse2.asm
../../src/bitstream/x86_asm/cbp_mmx.asm:73: error: invalid combination of opcode and operands
make: *** [bitstream/x86_asm/cbp_mmx.o] Error 1
make: *** Waiting for unfinished jobs....
 * 
 * ERROR: media-libs/xvid-1.2.2-r1 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2237:  Called _eapi2_src_compile
 *               ebuild.sh, line  634:  Called die
 * The specific snippet of code:
 *   		emake || die "emake failed"
 *  The die message:
 *   emake failed
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/media-libs/xvid-1.2.2-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/media-libs/xvid-1.2.2-r1/temp/environment'.
 *