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https://github.com/zephyrproject-rtos/zephyr
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8405ce13a1
At least one Linux distribution (Arch) has made python 3 the default interpreter, and Debian and Ubuntu have expressed a desire to eventually make this the case. As such, invoking 'python' or '/usr/bin/python' will possibly run python 3 instead of version 2. Distributions have included a 'python2' link for quite some time now, and given that we have some scripts that require python 3, we should be explicit about those that require python 2. In addition, be more consistent about how python is invoked, preferring the: #!/usr/bin/env python2 construct rather than a hardcoded path to python. This allows the user to have an alternative python in their path that will be used in preference to the system provided version. Jira: ZEP-1548 Change-Id: I125c2af808dc268f74277bc97a092df3acad23c0 Signed-off-by: David Brown <david.brown@linaro.org>
133 lines
3.7 KiB
Python
Executable File
133 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python2
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#
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# diffconfig - a tool to compare .config files.
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#
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# originally written in 2006 by Matt Mackall
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# (at least, this was in his bloatwatch source code)
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# last worked on 2008 by Tim Bird
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#
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import sys, os
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def usage():
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print("""Usage: diffconfig [-h] [-m] [<config1> <config2>]
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Diffconfig is a simple utility for comparing two .config files.
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Using standard diff to compare .config files often includes extraneous and
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distracting information. This utility produces sorted output with only the
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changes in configuration values between the two files.
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Added and removed items are shown with a leading plus or minus, respectively.
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Changed items show the old and new values on a single line.
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If -m is specified, then output will be in "merge" style, which has the
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changed and new values in kernel config option format.
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If no config files are specified, .config and .config.old are used.
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Example usage:
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$ diffconfig .config config-with-some-changes
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-EXT2_FS_XATTR n
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-EXT2_FS_XIP n
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CRAMFS n -> y
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EXT2_FS y -> n
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LOG_BUF_SHIFT 14 -> 16
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PRINTK_TIME n -> y
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""")
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sys.exit(0)
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# returns a dictionary of name/value pairs for config items in the file
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def readconfig(config_file):
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d = {}
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for line in config_file:
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line = line[:-1]
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if line[:7] == "CONFIG_":
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name, val = line[7:].split("=", 1)
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d[name] = val
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if line[-11:] == " is not set":
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d[line[9:-11]] = "n"
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return d
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def print_config(op, config, value, new_value):
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global merge_style
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if merge_style:
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if new_value:
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if new_value=="n":
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print("# CONFIG_%s is not set" % config)
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else:
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print("CONFIG_%s=%s" % (config, new_value))
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else:
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if op=="-":
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print("-%s %s" % (config, value))
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elif op=="+":
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print("+%s %s" % (config, new_value))
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else:
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print(" %s %s -> %s" % (config, value, new_value))
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def main():
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global merge_style
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# parse command line args
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if ("-h" in sys.argv or "--help" in sys.argv):
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usage()
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merge_style = 0
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if "-m" in sys.argv:
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merge_style = 1
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sys.argv.remove("-m")
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argc = len(sys.argv)
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if not (argc==1 or argc == 3):
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print("Error: incorrect number of arguments or unrecognized option")
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usage()
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if argc == 1:
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# if no filenames given, assume .config and .config.old
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build_dir=""
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if "KBUILD_OUTPUT" in os.environ:
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build_dir = os.environ["KBUILD_OUTPUT"]+"/"
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configa_filename = build_dir + ".config.old"
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configb_filename = build_dir + ".config"
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else:
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configa_filename = sys.argv[1]
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configb_filename = sys.argv[2]
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try:
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a = readconfig(open(configa_filename))
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b = readconfig(open(configb_filename))
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except (IOError):
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e = sys.exc_info()[1]
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print("I/O error[%s]: %s\n" % (e.args[0],e.args[1]))
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usage()
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# print items in a but not b (accumulate, sort and print)
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old = []
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for config in a:
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if config not in b:
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old.append(config)
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old.sort()
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for config in old:
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print_config("-", config, a[config], None)
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del a[config]
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# print items that changed (accumulate, sort, and print)
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changed = []
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for config in a:
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if a[config] != b[config]:
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changed.append(config)
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else:
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del b[config]
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changed.sort()
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for config in changed:
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print_config("->", config, a[config], b[config])
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del b[config]
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# now print items in b but not in a
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# (items from b that were in a were removed above)
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new = sorted(b.keys())
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for config in new:
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print_config("+", config, None, b[config])
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main()
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