# case setting one symbol to "n" allows other symbols to be set to "n" (due to
# dependencies).
import kconfiglib
import sys
conf = kconfiglib.Config(sys.argv[1])
done = False
while not done:
done = True
for sym in conf:
# Choices take care of themselves for allnoconfig, so we only need to
# worry about non-choice symbols
if not sym.is_choice_symbol():
# If we can assign a value to the symbol (where "n", "m" and "y"
# are ordered from lowest to highest), then assign the lowest
# value. lower_bound() returns None for symbols whose values cannot
# (currently) be changed, as well as for non-bool/tristate symbols.
lower_bound = sym.get_lower_bound()
if lower_bound is not None and \
kconfiglib.tri_less(lower_bound, sym.get_value()):
sym.set_user_value(lower_bound)
# We just changed the value of some symbol. As this may affect
# other symbols, keep going.
done = False
conf.write_config(".config")
# Get a list of all symbols that are not in choices
non_choice_syms = [sym for sym in conf.get_symbols() if
not sym.is_choice_symbol()]
done = False
while not done:
done = True
# Handle symbols outside of choices
for sym in non_choice_syms:
upper_bound = sym.get_upper_bound()
# See corresponding comment for allnoconfig implementation
if upper_bound is not None and \
kconfiglib.tri_less(sym.get_value(), upper_bound):
sym.set_user_value(upper_bound)
done = False
# Handle symbols within choices
for choice in conf.get_choices():
# Handle choices whose visibility allow them to be in "y" mode
if choice.get_visibility() == "y":
selection = choice.get_selection_from_defaults()
if selection is not None and \
selection is not choice.get_user_selection():
selection.set_user_value("y")
done = False
break
# Search for symbol to disable
for sym in conf:
if not sym.is_choice_item() and \
not sym.get_name() in req and \
sym.get_type() in (kconfiglib.BOOL, kconfiglib.TRISTATE) and \
sym.calc_value() == "y":
val = sym.calc_value()
# Get the lowerst value the symbol can be assigned, with "n",
# "m", and "y" being arranged from lowest to highest
lower_bound = sym.get_lower_bound()
if lower_bound is not None and \
kconfiglib.tri_less(lower_bound, val):
print "Lowering the value of {0} from '{1}' to '{2}'" \
.format(sym.get_name(), val, lower_bound)
sym.set_value(lower_bound)
break
else:
print "Done - no more symbols can be disabled"
break
# Test the kernel
write_config(conf, ".config")
print "Compiling kernel"
run_cmd(compile_cmd)
non_choice_syms = [
sym for sym in conf.get_symbols() if not sym.is_choice_symbol()
]
done = False
while not done:
done = True
# Handle symbols outside of choices
for sym in non_choice_syms:
upper_bound = sym.get_upper_bound()
# See corresponding comment for allnoconfig implementation
if upper_bound is not None and \
kconfiglib.tri_less(sym.get_value(), upper_bound):
sym.set_user_value(upper_bound)
done = False
# Handle symbols within choices
for choice in conf.get_choices():
# Handle choices whose visibility allow them to be in "y" mode
if choice.get_visibility() == "y":
selection = choice.get_selection_from_defaults()
if selection is not None and \
selection is not choice.get_user_selection():
selection.set_user_value("y")
done = False