[cmucl-imp] 2011-04 snapshot cannot compile itself?

[Madhu]

I'm trying to cross build the 2011-04 snapshot sources using the 2011-04
binary, with the command

$ src/tools/cross-build-world.sh linux-x86/ cross-x86/src/tools/cross-scripts/cross-x86-x86.lisp

This fails when loading worldbuild.lisp

; Error: Read error at 40380:
;  "(vm:floating-point-modes/\))))"
; Reader error at 40385 on #<Stream for file "/var/tmp/build/cmucl-rhea/src/code/irrat.lisp">:
; Symbol "FLOATING-POINT-MODES" not found in the X86 package.
;

Maybe I Should be doing something differently?

--- 
Madhu