92 lines
3.0 KiB
Python
Executable File
92 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# Modified from: https://github.com/ulfalizer/Kconfiglib/blob/master/examples/merge_config.py
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from kconfiglib import Kconfig, Symbol, BOOL, STRING, TRISTATE, TRI_TO_STR
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import sys
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import argparse
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def main():
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parse_args()
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print("Parsing Kconfig tree in {}".format(args.kconfig_root))
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kconf = Kconfig(args.kconfig_root)
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# Enable warnings for assignments to undefined symbols
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kconf.enable_undef_warnings()
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# This script uses alldefconfig as the base. Other starting states could be set
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# up here as well. The approach in examples/allnoconfig_simpler.py could
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# provide an allnoconfig starting state for example.
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print("Using {} as base".format(args.conf_fragments[0]))
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for config in args.conf_fragments[1:]:
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print("Merging {}".format(config))
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# Create a merged configuration by loading the fragments with replace=False
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for config in args.conf_fragments:
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kconf.load_config(config, replace=False)
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# Print warnings for symbols whose actual value doesn't match the assigned
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# value
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def name_and_loc(sym):
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# Helper for printing symbol names and Kconfig file location(s) in warnings
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if not sym.nodes:
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return sym.name + " (undefined)"
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return "{} (defined at {})".format(
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sym.name,
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", ".join("{}:{}".format(node.filename, node.linenr)
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for node in sym.nodes))
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for sym in kconf.defined_syms:
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# Was the symbol assigned to?
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if sym.user_value is not None:
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# Tristate values are represented as 0, 1, 2. Having them as
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# "n", "m", "y" is more convenient here, so convert.
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if sym.type in (BOOL, TRISTATE):
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user_value = TRI_TO_STR[sym.user_value]
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else:
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user_value = sym.user_value
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if user_value != sym.str_value:
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print('warning: {} was assigned the value "{}" but got the '
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'value "{}" -- check dependencies'.format(
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name_and_loc(sym), user_value, sym.str_value
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),
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file=sys.stderr)
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# Turn the warning for malformed .config lines into an error
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for warning in kconf.warnings:
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if "ignoring malformed line" in warning:
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print("Aborting due to malformed configuration settings",
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file=sys.stderr)
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sys.exit(1)
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# Write the merged configuration
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kconf.write_config(args.dotconfig)
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# Write the C header
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kconf.write_autoconf(args.autoconf)
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def parse_args():
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global args
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parser = argparse.ArgumentParser(
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description=__doc__,
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formatter_class=argparse.RawDescriptionHelpFormatter
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)
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parser.add_argument("kconfig_root")
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parser.add_argument("dotconfig")
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parser.add_argument("autoconf")
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parser.add_argument("conf_fragments", metavar='conf', type=str, nargs='+')
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args = parser.parse_args()
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if __name__ == "__main__":
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main()
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