VSC doesn't get proper paths to the header files

[bartosz-zelek]

My goal was to write a simple module.

dev_module.c:

#include <linux/module.h>
#include <linux/init.h>

static int __init my_init(void)
{
    return 0;
}

static void __exit my_exit(void)
{
}

module_init(my_init);
module_exit(my_exit);
MODULE_AUTHOR("Bartosz Zelek");
MODULE_DESCRIPTION("A simple device module");
MODULE_LICENSE("GPL");

Makefile:

obj-m += dev_module.o

.PHONY: all clean

all:
	$(MAKE) -C /lib/modules/`uname -r`/build M='$(PWD)' modules

clean:
	$(MAKE) -C /lib/modules/`uname -r`/build M='$(PWD)' clean

After calling python3 ../.vscode/generate_compdb.py the compile_commands.json were generated. VSC couldn't find sources of includes like #include <linux/init.h>.

It was because generated file contained as directory path to the directory that contained *.cmd files.

  "directory": "/home/bartek/labdrivers/lab1",
  "command": "gcc-13 -Wp,-MMD,/home/bartek/labdrivers/lab1/.dev_module.mod.o.d -nostdinc -I./arch/x86/include 

After replacing in the script
'directory': out_dir, to 'directory': f"/lib/modules/{os.uname().release}/build", VSC was able to find proper header files.

Goal: Handle such case.