Help compiling SGH Hercules kernel for porting kali nethunter

Hi everyone!
I own the Samsung Galaxy S2 T989 A.K.A. Hercules
running cm 12.1 unofficial Sultan Hercules based on android 5.1.1 (Lollipop)
which has sultan-kernel-celox.

I am actually trying to port kali nethunter, a set of tools for pentesting (Awesome)
Running Kali linux 2.0 32 bits in my notebook. I have installed all the dependencies described in:
https://github.com/offensive-securit...ting-Nethunter

I am using the next rom:
http://forum.xda-developers.com/gala...eview-t2931716

I also read the Develop Now guide to understand a bit better.

So the problem is when I run the " make" command in the sultan-kernel-celox kernel source directory and using " make Sultan_hercules_defconfig" which is inside /arch/arm/configs .

the error I am getting is:
CHK include/linux/version.h
CHK include/generated/utsrelease.h
make[1]: 'include/generated/mach-types.h' is up to date.
/bin/sh: 1: Syntax error: "(" unexpected
/root/arm-stuff/kali-nethunter/sultan-herc/./Kbuild:35: recipe for target 'kernel/bounds.s' failed
make[1]: *** [kernel/bounds.s] Error 2
Makefile:989: recipe for target 'prepare0' failed
make: *** [prepare0] Error 2

So with my very limited knowledge about development and scripting check the Kbuild file at line 35 but I can't understand, I have also "googled" about the error I am getting but without luck, I also have tried with other sources kernel I have found but it seems to be the same message.

So please help me to figure what am I doing wrong or which kernel source should I use. I hope someone with so much more experience than me would help me with this issue to finally getting the nethunter tools.

Thanks in advance