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#!/usr/bin/env python
# Works like 'make allnoconfig'. Verified by the test suite to generate
# identical output to 'make allnoconfig' for all ARCHes.
#
# See the examples/allnoconfig_walk.py example script for another variant.
#
# Usage for the Linux kernel:
#
# $ make [ARCH=<arch>] scriptconfig SCRIPT=Kconfiglib/allnoconfig.py
import os
import sys
import kconfiglib
def main():
kconf = kconfiglib.standard_kconfig()
# Avoid warnings printed by Kconfiglib when assigning a value to a symbol that
# has no prompt. Such assignments never have an effect.
kconf.disable_warnings()
# Small optimization
BOOL_TRI = (kconfiglib.BOOL, kconfiglib.TRISTATE)
for sym in kconf.defined_syms:
if sym.orig_type in BOOL_TRI:
sym.set_value(2 if sym.is_allnoconfig_y else 0)
config_filename = os.environ.get("KCONFIG_CONFIG")
if config_filename is None:
config_filename = ".config"
kconf.write_config(config_filename)
if __name__ == "__main__":
main()
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