#!/usr/bin/env python3 # Copyright (c) 2019, Ulf Magnusson # SPDX-License-Identifier: ISC """ Simple utility for setting configuration values from the command line. Sample usage: $ setconfig FOO_SUPPORT=y BAR_BITS=8 Note: Symbol names should not be prefixed with 'CONFIG_'. The exit status on errors is 1. The default input/output configuration file is '.config'. A different filename can be passed in the KCONFIG_CONFIG environment variable. When overwriting a configuration file, the old version is saved to .old (e.g. .config.old). """ import argparse import sys import kconfiglib def main(): parser = argparse.ArgumentParser( formatter_class=argparse.RawDescriptionHelpFormatter, description=__doc__) parser.add_argument( "--kconfig", default="Kconfig", help="Top-level Kconfig file (default: Kconfig)") parser.add_argument( "--no-check-exists", dest="check_exists", action="store_false", help="Ignore assignments to non-existent symbols instead of erroring " "out") parser.add_argument( "--no-check-value", dest="check_value", action="store_false", help="Ignore assignments that didn't \"take\" (where the symbol got a " "different value, e.g. due to unsatisfied dependencies) instead " "of erroring out") parser.add_argument( "assignments", metavar="ASSIGNMENT", nargs="*", help="A 'NAME=value' assignment") args = parser.parse_args() kconf = kconfiglib.Kconfig(args.kconfig, suppress_traceback=True) print(kconf.load_config()) for arg in args.assignments: if "=" not in arg: sys.exit("error: no '=' in assignment: '{}'".format(arg)) name, value = arg.split("=", 1) if name not in kconf.syms: if not args.check_exists: continue sys.exit("error: no symbol '{}' in configuration".format(name)) sym = kconf.syms[name] if not sym.set_value(value): sys.exit("error: '{}' is an invalid value for the {} symbol {}" .format(value, kconfiglib.TYPE_TO_STR[sym.orig_type], name)) if args.check_value and sym.str_value != value: sys.exit("error: {} was assigned the value '{}', but got the " "value '{}'. Check the symbol's dependencies, and make " "sure that it has a prompt." .format(name, value, sym.str_value)) print(kconf.write_config()) if __name__ == "__main__": main()