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#!/usr/bin/env python
# This script can be used to implement incremental builds, where changing a
# symbol will recompile just the source files that reference it.
#
# See the docstring for the Kconfig.sync_deps() function for more usage
# information.
#
# Usage:
#
# (Automatically) run the following command before each build:
#
# $ syncconfig [<top Kconfig file>] <symbol file directory, passed to sync_deps()>
#
# This will indirectly catch any (relevant) changes to Kconfig files and
# environment variables as well, so it's redundant to have separate
# dependencies for those (except as a slight optimization).
import sys
import kconfiglib
def main():
if not 2 <= len(sys.argv) <= 3:
sys.exit("usage: {} [Kconfig] <Symbol directory>".format(sys.argv[0]))
if len(sys.argv) == 2:
kconfig_filename = "Kconfig"
sym_dir = sys.argv[1]
else:
kconfig_filename = sys.argv[1]
sym_dir = sys.argv[2]
kconfiglib.Kconfig(kconfig_filename).sync_deps(sym_dir)
if __name__ == "__main__":
main()
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