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#!/usr/bin/env python3
# Copyright (c) 2018-2019, Ulf Magnusson
# SPDX-License-Identifier: ISC
"""
Writes a configuration file where as many symbols as possible are set to 'y'.
The default output filename is '.config'. A different filename can be passed
in the KCONFIG_CONFIG environment variable.
Usage for the Linux kernel:
$ make [ARCH=<arch>] scriptconfig SCRIPT=Kconfiglib/allyesconfig.py
"""
import kconfiglib
def main():
kconf = kconfiglib.standard_kconfig(__doc__)
# See allnoconfig.py
kconf.warn = False
# Try to set all symbols to 'y'. Dependencies might truncate the value down
# later, but this will at least give the highest possible value.
#
# Assigning 0/1/2 to non-bool/tristate symbols has no effect (int/hex
# symbols still take a string, because they preserve formatting).
for sym in kconf.unique_defined_syms:
# Set choice symbols to 'm'. This value will be ignored for choices in
# 'y' mode (the "normal" mode), which will instead just get their
# default selection, but will set all symbols in m-mode choices to 'm',
# which is as high as they can go.
#
# Here's a convoluted example of how you might get an m-mode choice
# even during allyesconfig:
#
# choice
# tristate "weird choice"
# depends on m
sym.set_value(1 if sym.choice else 2)
# Set all choices to the highest possible mode
for choice in kconf.unique_choices:
choice.set_value(2)
kconf.warn = True
kconf.load_allconfig("allyes.config")
print(kconf.write_config())
if __name__ == "__main__":
main()
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