Mine

make[2]: Entering directory `/home/merten/netbeans-projects/theora/lib'
if /bin/sh ../libtool --mode=compile --tag=CC gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../include -I../lib -I../lib/dec -I../lib/enc    -Wall -O3 -fforce-addr -fomit-frame-pointer -finline-functions -funroll-loops  -MT libtheora_la-dsp_mmx.lo -MD -MP -MF ".deps/libtheora_la-dsp_mmx.Tpo" -c -o libtheora_la-dsp_mmx.lo `test -f 'enc/x86_64/dsp_mmx.c' || echo './'`enc/x86_64/dsp_mmx.c; \
then mv -f ".deps/libtheora_la-dsp_mmx.Tpo" ".deps/libtheora_la-dsp_mmx.Plo"; else rm -f ".deps/libtheora_la-dsp_mmx.Tpo"; exit 1; fi
 gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../include -I../lib -I../lib/dec -I../lib/enc -Wall -O3 -fforce-addr -fomit-frame-pointer -finline-functions -funroll-loops -MT libtheora_la-dsp_mmx.lo -MD -MP -MF .deps/libtheora_la-dsp_mmx.Tpo -c enc/x86_64/dsp_mmx.c  -fPIC -DPIC -o .libs/libtheora_la-dsp_mmx.o
In file included from ./cpu.h:19,
                 from ../lib/enc/dsp.h:22,
                 from ../lib/enc/codec_internal.h:27,
                 from enc/x86_64/dsp_mmx.c:20:
./internal.h:31: warning: ignoring #pragma warning
enc/x86_64/dsp_mmx.c: In function `sub8x8__mmx':
enc/x86_64/dsp_mmx.c:35: error: can't find a register in class `GENERAL_REGS' while reloading `asm'
enc/x86_64/dsp_mmx.c: At top level:
../lib/dec/ocintrin.h:35: warning: 'oc_clamp255' defined but not used
make[2]: *** [libtheora_la-dsp_mmx.lo] Error 1
make[2]: Leaving directory `/home/merten/netbeans-projects/theora/lib'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/merten/netbeans-projects/theora'
make: *** [all] Error 2