Make vscode ready for kernel development

vscode-init.py

#!/usr/bin/env python3

# This program runs "make --dry-run" then processes the output to create a visual studio code
# c_cpp_properties.json file

# Origin:
#   https://iotexpert.com/2020/06/01/stupid-python-tricks-vscode-c_cpp_properties-json-for-linux-kernel-development/
#   by: Alan Hawse
 
import json
import os
import re
 
includePath = set()
defines = set()
otherOptions = set()
doubleDash = set()
outputJson = dict()
 
# Take a line from the make output
# split the line into a list by using whitespace
# search the list for tokens of
# -I (gcc include)
# -D (gcc #define)
# -- (I actually ignore these but I was curious what they all were)
# - (other - options which I keep track of ... but then ignore)
 
def processLine(lineData):
    linelist = lineData.split()
    pwd = os.getcwd()
    for i in linelist:
        if(i[:2] == "-I"):
            if(i[2:2] == '/'):
                includePath.add(i[2:])
            else:
                includePath.add(f"{pwd}/include/{i[2:]}")
        elif (i[:2] == "-D"):
            defines.add(i[2:])
        elif (i[:2] == "--"):
            doubleDash.add(i)
        elif (i[:1] == '-'):
            otherOptions.add(i)

# run make to find #defines and -I includes
stream = os.popen('make --dry-run')
outstring = stream.read()
lines = outstring.split('\n')
 
 
for i in lines:
    # look for a line with " CC "... this is a super ghetto method
    val = re.compile(r'\s+CC\s+').search(i)
    if val:
        processLine(i)
 
# Create the JSON 
outputJson["configurations"] = []
 
configDict = {"name" : "Linux"}
configDict["includePath"] = list(includePath)
configDict["defines"] = list(defines)
configDict["intelliSenseMode"] = "gcc-x64"
configDict["compilerPath"]= "/usr/bin/gcc"
configDict["cStandard"]= "c11"
configDict["cppStandard"] = "c++17"
 
outputJson["configurations"].append(configDict)
outputJson["version"] = 4
 
# Convert the Dictonary to a string of JSON
jsonMsg = json.dumps(outputJson)


# Save the JSON to the files
if not os.path.exists('.vscode'):
    os.mkdir('.vscode')

with open(".vscode/c_cpp_properties.json", "w") as outF:
    outF.write(jsonMsg)