[racket-dev] Racket build error

What is this error:

gcc -m32 -I./.. -I../../../racket/src/../include -arch i386  -Wall  -DOS_X -D_DARWIN_UNLIMITED_SELECT -pthread   -fno-common  -c ../../../racket/src/future.c -o future.o
../../../racket/src/future.c: In function ‘scheme_future_block_until_gc’:
../../../racket/src/future.c:543: error: can't find a register in class ‘BREG’ while reloading ‘asm’
../../../racket/src/future.c:543: error: ‘asm’ operand has impossible constraints
make[6]: *** [future.o] Error 1


I did a pull today and got this.   Is it a bug, or am I missing something I need to build this?
I am building from src/build, if that makes a difference.

Thanks,
-Everett