64bit build errors

[Da Rock]

I'm trying to build some newer versions of ffserver. But I keep getting 
asm build errors when I get to libavcodec/vp*.

Error: `(%esi,%eax)' is not a valid 64 bit base/index expression

If I set it to build static it fails at h264.

"Error: `-1(%edi)'  is not a valid 64 bit base/index expression"

Googling hasn't proved helpful in finding an answer. I've tried setting 
some configure options: arch=amd64/x86_64, disabling cmov/fast_cmov, 
ebx, etc.

Any ideas how to fix this?

Cheers