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#!/usr/bin/env python
# Copyright (c) 2018, Ulf Magnusson
# SPDX-License-Identifier: ISC
# Works like 'make olddefconfig', updating an old .config file by filing in
# default values for all new symbols. This is the same as picking the default
# selection for all symbols in oldconfig, or entering the menuconfig interface
# and immediately saving.
#
# The default output filename is '.config'. A different filename can be passed
# in the KCONFIG_CONFIG environment variable.
import os
import sys
import kconfiglib
def main():
config_filename = kconfiglib.standard_config_filename()
if not os.path.exists(config_filename):
sys.exit("{}: '{}' not found".format(sys.argv[0], config_filename))
kconf = kconfiglib.standard_kconfig()
kconf.load_config(config_filename)
kconf.write_config(config_filename)
print("Updated configuration written to '{}'".format(config_filename))
if __name__ == "__main__":
main()
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