zeus modules

[eegore]

I am trying to build a zeus module and I keep getting this error.

pi@raspberrypi:~/zeus $ make
make -C /lib/modules/`uname -r`/build M=/home/pi/zeus modules
make[1]: *** /lib/modules/4.9.35-v7+/build: No such file or directory. Stop.
Makefile:7: recipe for target 'all' failed
make: *** [all] Error 2