Compile of 2.4.10-ac12 dies on sparc64

[Donald Maner]

Trying to compile 2.4.10-ac12 on an Ultra10:

sparc64-linux-gcc -D__KERNEL__ -I/home/donjr/linux-2.4.10-ac12/include
-Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -m64 -pipe -mno-fpu -mcpu=ultrasparc
-mcmodel=medlow -ffixed-g4 -fcall-used-g5 -fcall-used-g7
-Wno-sign-compare -Wa,--undeclared-regs    -c -o init_task.o init_task.c
init_task.c:7: `INIT_MMAP' undeclared here (not in a function)
make[1]: *** [init_task.o] Error 1
make[1]: Leaving directory
`/home/donjr/linux-2.4.10-ac12/arch/sparc64/kernel'
make: *** [_dir_arch/sparc64/kernel] Error 2

Thanks
Donald