kernel build 3.12 fails

[chow04]

I acquire the kernel and patch it via the commands:

git clone https://github.com/beagleboard/kernel.git 3.12
cd 3.12
git checkout origin/3.12 -b 3.12
./patch.sh

Then when I attempt to compile the kernel:

cd kernel
cp ../configs/beaglebone .config
mkdir rootfs
make ARCH=arm CROSS_COMPILE=arm-angstrom-linux-gnueabi- LOADADDR=0x80008000 uImage dtsbs

I get the following output:

CHK include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
make[1]: include/generated/mach-types.h' is up to date. CALL scripts/checksyscalls.sh CHK include/generated/compile.h CC arch/arm/kernel/signal.o /tmp/ccScLcjY.s: Assembler messages: /tmp/ccScLcjY.s:945: Error: garbage following instruction --dmb ish'
make[1]: *** [arch/arm/kernel/signal.o] Error 1
make: *** [arch/arm/kernel] Error 2

I'm building using Ubuntu 12.04
gcc --version outputs:
gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3

[RobertCNelson]

Binutils is too old.