Atlas - defconfig_oldconfig.py
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1# Produces exactly the same output as the following script:
2#
3# make defconfig
4# echo CONFIG_ETHERNET=n >> .config
5# make oldconfig
6# echo CONFIG_ETHERNET=y >> .config
7# yes n | make oldconfig
8#
9# This came up in https://github.com/ulfalizer/Kconfiglib/issues/15.
10#
11# Usage:
12#
13#   $ make [ARCH=<arch>] scriptconfig SCRIPT=Kconfiglib/examples/defconfig_oldconfig.py
14
15import sys
16
17import kconfiglib
18
19
20kconf = kconfiglib.Kconfig(sys.argv[1])
21
22# Mirrors defconfig
23kconf.load_config("arch/x86/configs/x86_64_defconfig")
24kconf.write_config()
25
26# Mirrors the first oldconfig
27kconf.load_config()
28kconf.syms["ETHERNET"].set_value(0)
29kconf.write_config()
30
31# Mirrors the second oldconfig
32kconf.load_config()
33kconf.syms["ETHERNET"].set_value(2)
34for s in kconf.unique_defined_syms:
35    if s.user_value is None and 0 in s.assignable:
36        s.set_value(0)
37
38# Write the final configuration
39print(kconf.write_config())
40
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