I am trying to do some Linux Kernel programming with CLion. I observe that some headers, like <linux/kernel.h> and <linux/module.h> are correctly recognized, but some others, like <linux/init.h> are not.

To be more clear, here is a sample program:

1 #include <linux/init.h>
2 #include <linux/kernel.h>
3
4 int init_module(void) {
5     printk("initializing");
6     return 0;
7 }

Here I have rows 1 and 5 highlighted in red with the typical “file not found”/”call to undeclared function” errors, but row 2 is correctly non-highlighted, and if I try to write something that is linked to that library there is no problem at all.

I have tried to install the latest headers for my kernel, i.e. sudo apt install linux-headers-$(uname -r), but it does not seem to work. What can I do?