Kernel 2.5.8 on Alpha

I tried to compile kernel 2.5.8 on an Alpha. I just wanted to try it...
This happens:
(Any ideas?)

[root@xxx linux-2.5.8]# make menuconfig
[ ... ]
[root@xxx linux-2.5.8]# make dep
[ ... ]
[root@xxx linux-2.5.8]# make
gcc -D__KERNEL__ -I/usr/src/linux-2.5.8/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev5
-Wa,-mev6   -DKBUILD_BASENAME=main -c -o init/main.o init/main.c
init/main.c: In function `start_kernel':
init/main.c:347: warning: implicit declaration of function
`setup_per_cpu_areas'
. scripts/mkversion > .tmpversion
gcc -D__KERNEL__ -I/usr/src/linux-2.5.8/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev5
-Wa,-mev6  -DUTS_MACHINE='"alpha"' -DKBUILD_BASENAME=version -c -o
init/version.o init/version.c
gcc -D__KERNEL__ -I/usr/src/linux-2.5.8/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev5
-Wa,-mev6   -DKBUILD_BASENAME=do_mounts -c -o init/do_mounts.o
init/do_mounts.c
make CFLAGS="-D__KERNEL__ -I/usr/src/linux-2.5.8/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev5
-Wa,-mev6 " -C  kernel
make[1]: Entering directory `/usr/src/linux-2.5.8/kernel'
make all_targets
make[2]: Entering directory `/usr/src/linux-2.5.8/kernel'
gcc -D__KERNEL__ -I/usr/src/linux-2.5.8/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev5
-Wa,-mev6   -DKBUILD_BASENAME=sched  -fno-omit-frame-pointer -c -o
sched.o sched.c
sched.c: In function `schedule':
sched.c:771: `PREEMPT_ACTIVE' undeclared (first use in this function)
sched.c:771: (Each undeclared identifier is reported only once
sched.c:771: for each function it appears in.)
sched.c: In function `init_idle':
sched.c:1556: structure has no member named `preempt_count'
make[2]: *** [sched.o] Error 1
make[2]: Leaving directory `/usr/src/linux-2.5.8/kernel'
make[1]: *** [first_rule] Error 2
make[1]: Leaving directory `/usr/src/linux-2.5.8/kernel'
make: *** [_dir_kernel] Error 2

-Oliver