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#!/usr/bin/env python
# Copyright (c) 2019, Ulf Magnusson
# SPDX-License-Identifier: ISC
"""
Saves a minimal configuration file that only lists symbols that differ in value
their defaults. Loading such a configuration file is equivalent to loading the
"full" configuration file.
Minimal configuration files are handy to start from when editing configuration
files by hand.
The default input configuration file is '.config'. A different input filename
can be passed in the KCONFIG_CONFIG environment variable.
Note: Minimal configurations can also be generated from within the menuconfig
interface.
"""
import argparse
import kconfiglib
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.RawDescriptionHelpFormatter,
description=__doc__)
parser.add_argument(
"--kconfig",
default="Kconfig",
help="Base Kconfig file (default: Kconfig)")
parser.add_argument(
"--out",
default="defconfig",
help="Output filename for minimal configuration (default: defconfig)")
args = parser.parse_args()
kconf = kconfiglib.Kconfig(args.kconfig)
kconf.load_config()
kconf.write_min_config(args.out)
if __name__ == "__main__":
main()
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