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kconfig: update .config on missed or conflicting symbol values

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The existing .config may have missed or conflicting values if the file is
manually edited or Kconfig is changed. Kconfiglib will assign default values to
missed symbols and resolve conflicts when loading .config, but the current
silentoldconfig.py fails to write the updated symbol values back to .config.

This patch checks if any missed or conflicting symbol value is fixed by
Kconfiglib and write the updated values back to .config if necessary.

Tracked-On: #2371
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
This commit is contained in:
Junjie Mao 2019-01-22 15:56:19 +08:00 committed by wenlingz
parent ca925f0dd4
commit fd3279204e
1 changed files with 13 additions and 0 deletions
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13
scripts/kconfig/silentoldconfig.py
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@ -75,6 +75,19 @@ def main():
kconfig = kdefconfig
sys.stdout.write("Overwrite with default configuration based on %s.\n" % defconfig_path)
need_update = True
else:
# Use the existing .config as the base.
#
# Mark need_update if any visible symbol picks a different value
# from what is specified in .config.
for sym in [x for x in kconfig.unique_defined_syms if x.visibility]:
if sym.type in [kconfiglib.BOOL, kconfiglib.TRISTATE]:
picked_value = sym.tri_value
else:
picked_value = sym.str_value
need_update = (picked_value != sym.user_value)
if need_update:
break
else:
# base on a default configuration
if kdefconfig: