Background: So, I am not really experienced in using Linux, although I have done a little of bash scripting here and there and some other things. I am building a small RBAC LSM based on the framework, and have never before built a module in Linux.

Problem: I decided to build a small skeleton LSM, but when I try to compile it(only a single file as of now), gcc is unable to find a whole lot of header files in /usr/include/linux. I tried to locate those header files(found under /usr/src/kernels/<version>/include). I tried to include that location when compiling the program by using the -I option.

I still get the same error(with using a space between -I and path and w/o too).

Here is the output from the above command. Not directly pasting it in here since I also used the -v option and the output is huge.
[Pastebin link].


Pastebin link

Here is the output of locate linux/init.h

Uninstalled then installed gcc back again. Same result.

When I moved all files from the aforementioned location to the default location, other errors are coming.