How to compile driver against specific kernel?

[GAZ082]

Hi there. I'm trying to build a wifi driver for the 3.14.50 kernel i installed a week ago but yet havent reset the server to kick it in. Dont want to reset the server without compiling the kernel module because otherwise the wifi wont work and i'll have to plug a wire from my room to the living where the server (multimedia) is.

I tried to do:

$this->bbcode_second_pass_code('', 'make ARCH=arm CROSS_COMPILE= -C /lib/modules/3.14.50-1-ARCH/build M=/home/gabriel/Downloads/rtl8188eu-4.1.8_9499 modules')

which does not throw any error, but then:

$this->bbcode_second_pass_code('', 'sudo install -p -m 644 8188eu.ko /lib/modules/3.14.50-1-ARCH/kernel/drivers/net/wireless/')

That throws:
$this->bbcode_second_pass_code('', 'Makefile:159: recipe for target 'install' failed')

My current kernel is 3.14.48.

Is this doable?

Thanks!