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# Works like 'make allyesconfig'. Verified by the test suite to generate output
# identical to 'make allyesconfig', for all ARCHES.
#
# This example is implemented a bit differently from allnoconfig.py to
# demonstrate some other possibilities.
#
# In theory, we need to handle choices in two different modes:
#
# y: One symbol is y, the rest are n
# m: Any number of symbols are m, the rest are n
#
# Only tristate choices can be in m mode.
#
# In practice, no m mode choices appear for allyesconfig as of 4.14, as
# expected, but we still handle them here for completeness. Here's a convoluted
# example of how you might get an m-mode choice even during allyesconfig:
#
# choice
# tristate "weird choice"
# depends on m
#
# ...
#
# endchoice
#
#
# Usage:
#
# $ make [ARCH=<arch>] scriptconfig SCRIPT=Kconfiglib/examples/allyesconfig.py
from kconfiglib import Kconfig, Choice, STR_TO_TRI
import sys
def all_choices(node):
"""
Returns all choices in the menu tree rooted at 'node'. See
print_tree_iter.py for an example of how the menu tree can be walked
iteratively.
(I was thinking of making a list of choices available directly in the API,
but I'm not sure it will always be needed internally, and I'm trying to
spam the API with less seldom-used stuff compared to Kconfiglib 1.)
"""
res = []
while node:
if isinstance(node.item, Choice):
res.append(node.item)
if node.list:
res.extend(all_choices(node.list))
node = node.next
return res
kconf = Kconfig(sys.argv[1])
non_choice_syms = [sym for sym in kconf.defined_syms if not sym.choice]
choices = all_choices(kconf.top_node) # All choices in the configuration
while True:
changed = False
for sym in non_choice_syms:
# Set the symbol to the highest assignable value, unless it already has
# that value. sym.assignable[-1] gives the last element in assignable.
if sym.assignable and sym.tri_value < sym.assignable[-1]:
sym.set_value(sym.assignable[-1])
changed = True
for choice in choices:
# Same logic as above for choices
if choice.assignable and choice.tri_value < choice.assignable[-1]:
choice.set_value(choice.assignable[-1])
changed = True
if choice.tri_value == 1:
# For m-mode choices, set all choice symbols to m
for sym in choice.syms:
sym.set_value(1)
# Do multiple passes until we longer manage to raise any symbols or
# choices, like in allnoconfig.py
if not changed:
break
kconf.write_config(".config")
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