ConfigHeaderGenerator.py

# This script generates the config header file from .config

import os
import sys
import re
import argparse

def main():
    parser = argparse.ArgumentParser(description='Generate config header file from .config')
    parser.add_argument('config_file', help='Path to .config file')
    parser.add_argument('header_file', help='Path to header file')
    args = parser.parse_args()

    config_file = args.config_file
    header_file = args.header_file

    if not os.path.exists(config_file):
        print('Error: ' + config_file + ' does not exist')
        sys.exit(1)

    if not config_file.endswith('.config'):
        print('Error: ' + config_file + ' is not a .config file')
        sys.exit(1)

    print('Generating config header file from ' + config_file + ' to ' + header_file)

    # Read config file
    with open(config_file, 'r') as f:
        config = f.readlines()

    # Parse config file
    config_dict = {}
    for line in config:
        if line.startswith('#'):
            continue
        if not '=' in line:
            continue
        key, value = line.split('=')
        key = key.strip()
        value = value.strip()
        config_dict[key] = value

    # Generate header file
    with open(header_file, 'w') as f:
        f.write('/* This file is generated by ConfigHeaderGenerator.py */\n\n')
        f.write('')
        f.write('#ifndef CONFIG_H\n')
        f.write('#define CONFIG_H\n\n')
        for key, value in config_dict.items():
            if (value == 'y'):
                f.write("#define {:<30}\n".format(key))
            elif (value == 'n'):
                f.write("/* #define {:<30} */\n".format(key))
            else:
                f.write("#define {:<30} ({})\n".format(key, value))

        f.write('')
        f.write('\n#endif\n')

if __name__ == '__main__':
    main()

Kconfig

menu "Project Configuration"

config CONFIG_ENABLE_FEATURE_X
    bool "Enable feature X"
    default y

config CONFIG_PARAM_FEATURE_X
    string "Default installation path"
    default "/usr/local/myapp"

endmenu