1#!/usr/bin/env python3 2 3# Copyright (c) 2018-2019, Ulf Magnusson 4# SPDX-License-Identifier: ISC 5 6""" 7Writes a configuration file where as many symbols as possible are set to 'y'. 8 9The default output filename is '.config'. A different filename can be passed 10in the KCONFIG_CONFIG environment variable. 11 12Usage for the Linux kernel: 13 14 $ make [ARCH=<arch>] scriptconfig SCRIPT=Kconfiglib/allyesconfig.py 15""" 16import kconfiglib 17 18 19def main(): 20 kconf = kconfiglib.standard_kconfig(__doc__) 21 22 # See allnoconfig.py 23 kconf.warn = False 24 25 # Try to set all symbols to 'y'. Dependencies might truncate the value down 26 # later, but this will at least give the highest possible value. 27 # 28 # Assigning 0/1/2 to non-bool/tristate symbols has no effect (int/hex 29 # symbols still take a string, because they preserve formatting). 30 for sym in kconf.unique_defined_syms: 31 # Set choice symbols to 'm'. This value will be ignored for choices in 32 # 'y' mode (the "normal" mode), which will instead just get their 33 # default selection, but will set all symbols in m-mode choices to 'm', 34 # which is as high as they can go. 35 # 36 # Here's a convoluted example of how you might get an m-mode choice 37 # even during allyesconfig: 38 # 39 # choice 40 # tristate "weird choice" 41 # depends on m 42 sym.set_value(1 if sym.choice else 2) 43 44 # Set all choices to the highest possible mode 45 for choice in kconf.unique_choices: 46 choice.set_value(2) 47 48 kconf.warn = True 49 50 kconf.load_allconfig("allyes.config") 51 52 print(kconf.write_config()) 53 54 55if __name__ == "__main__": 56 main() 57