acrn-hypervisor/scripts/kconfig/defconfig.py

57 lines
1.8 KiB
Python

# Copyright (C) 2018 Intel Corporation.
# SPDX-License-Identifier: BSD-3-Clause
# This script takes a Kconfig and a defconfig file, and expands it to a .config
# with all default values listed explicitly.
import sys, os
# Kconfiglib: Copyright (c) 2011-2018, Ulf Magnusson
# SPDX-License-Identifier: ISC
# Refer to scripts/kconfig/LICENSE.kconfiglib for the permission notice.
import kconfiglib
def usage():
sys.stdout.write("%s: <Kconfig file> <path to .config>\n" % sys.argv[0])
def main():
if len(sys.argv) < 3:
usage()
sys.exit(1)
target_board = os.environ['BOARD']
kconfig_path = sys.argv[1]
if not os.path.isfile(kconfig_path):
sys.stderr.write("Cannot find file %s\n" % kconfig_path)
sys.exit(1)
kconfig = kconfiglib.Kconfig(kconfig_path)
defconfig_path = kconfig.defconfig_filename
if not defconfig_path or not os.path.isfile(defconfig_path):
sys.stderr.write("No defconfig found for board %s.\n" % target_board)
sys.exit(1)
kconfig.load_config(defconfig_path)
config_path = sys.argv[2]
if os.path.isfile(config_path):
# No need to change .config if it is already equivalent to the specified
# default.
kconfig_current = kconfiglib.Kconfig(kconfig_path)
kconfig_current.load_config(config_path)
same_config = True
for sym in kconfig_current.syms:
if kconfig_current.syms[sym].str_value != kconfig.syms[sym].str_value:
same_config = False
break
if same_config:
sys.exit(0)
sys.stdout.write("Default configuration based on %s.\n" % defconfig_path)
kconfig.write_config(config_path)
sys.stdout.write("Configuration written to %s.\n" % config_path)
if __name__ == "__main__":
main()