mirror of https://github.com/thesofproject/sof.git
90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
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#!/usr/bin/env python
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# Copyright (c) 2018, Ulf Magnusson
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# SPDX-License-Identifier: ISC
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# Generates a C header from the configuration, matching the format of
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# include/generated/autoconf.h in the kernel.
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#
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# Optionally generates a directory structure with one file per symbol that can
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# be used to implement incremental builds. See the docstring for
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# Kconfig.sync_deps() in Kconfiglib.
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#
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# Usage (see argument help texts for more information):
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#
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# genconfig.py [-h] [--header-path HEADER_FILE]
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# [--sync-deps [OUTPUT_DIR]] [--config-out CONFIG_FILE]
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# [KCONFIG_FILENAME]
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import argparse
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import kconfiglib
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DESCRIPTION = """
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Generates a header file with defines from the configuration. Optionally
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creates/updates a directory with incremental build information as well (see the
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docstring for the Kconfig.sync_deps() function in Kconfiglib). The .config file
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to generate the configuration from can be specified by setting the
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KCONFIG_CONFIG environment variable.
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"""
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DEFAULT_HEADER_PATH = "config.h"
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DEFAULT_SYNC_DEPS_PATH = "deps/"
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def main():
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parser = argparse.ArgumentParser(description=DESCRIPTION)
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parser.add_argument(
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"--header-path",
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metavar="HEADER_FILE",
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default=DEFAULT_HEADER_PATH,
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help="Path for the generated header file (default: {})"
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.format(DEFAULT_HEADER_PATH))
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parser.add_argument(
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"--sync-deps",
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dest="sync_deps_path",
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metavar="OUTPUT_DIR",
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nargs="?",
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const=DEFAULT_SYNC_DEPS_PATH,
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help="Enable generation of build dependency information for "
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"incremental builds, optionally specifying the output path "
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"(default: {})".format(DEFAULT_SYNC_DEPS_PATH))
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parser.add_argument(
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"--config-out",
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dest="config_path",
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metavar="CONFIG_FILE",
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help="Write the configuration to the specified filename. "
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"This is useful if you include .config files in Makefiles, as "
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"the generated configuration file will be a full .config file "
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"even if .config is outdated. The generated configuration "
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"matches what olddefconfig would produce. If you use "
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"--sync-deps, you can include deps/auto.conf instead. "
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"--config-out is meant for cases where incremental build "
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"information isn't needed.")
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parser.add_argument(
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"kconfig_filename",
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metavar="KCONFIG_FILENAME",
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nargs="?",
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default="Kconfig",
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help="Top-level Kconfig file (default: Kconfig)")
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args = parser.parse_args()
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kconf = kconfiglib.Kconfig(args.kconfig_filename)
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kconf.load_config(verbose=False)
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kconf.write_autoconf(args.header_path)
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if args.sync_deps_path is not None:
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kconf.sync_deps(args.sync_deps_path)
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if args.config_path is not None:
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kconf.write_config(args.config_path, save_old=False)
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if __name__ == "__main__":
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main()
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