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#!/usr/bin/env python
# Copyright (c) 2018, Ulf Magnusson
# SPDX-License-Identifier: ISC
# Works like 'make allyesconfig'. Verified by the test suite to generate output
# identical to 'make allyesconfig', for all ARCHES.
#
# In theory, we need to handle choices in two different modes:
#
# y: One symbol is y, the rest are n
# m: Any number of symbols are m, the rest are n
#
# Only tristate choices can be in m mode.
#
# Here's a convoluted example of how you might get an m-mode choice even during
# allyesconfig:
#
# choice
# tristate "weird choice"
# depends on m
#
# ...
#
# endchoice
#
#
# Usage for the Linux kernel:
#
# $ make [ARCH=<arch>] scriptconfig SCRIPT=Kconfiglib/examples/allyesconfig.py
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)
# Try to set all bool/tristate symbols to 'y'. Dependencies might truncate
# the value down later, but this will at least give the highest possible
# value.
for sym in kconf.defined_syms:
if sym.orig_type in BOOL_TRI:
# Set all choice symbols to 'm'. This value will be ignored for
# choices in 'y' mode (the "normal" mode), but will set all symbols
# in m-mode choices to 'm', which is as high as they can go.
sym.set_value(1 if sym.choice else 2)
# Set all choices to the highest possible mode
for choice in kconf.choices:
choice.set_value(2)
kconf.write_config(kconfiglib.standard_config_filename())
if __name__ == "__main__":
main()
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