scripts/*syscalls.py: sort os.walk() for a more deterministic build
Found by "disordered --shuffle-dirents=yes". Sorting os.walk() in scripts/subfolder_list.py removes the randomness in the following files: build/zephyr/misc/generated/syscalls_subdirs.txt build/zephyr/CMakeFiles/syscall_list_h_target.dir/ or build.ninja Sorting os.walk() in scripts/parse_syscalls.py removes the randomness in: build/zephyr/misc/generated/syscalls.json build/zephyr/include/generated/syscall_dispatch.c build/zephyr/include/generated/syscall_list.h Note my (limited so far) testing did *not* observe any randomness in any object file that this would address; the main purpose here is to remove a very large amount of noise in diffoscope. Signed-off-by: Marc Herbert <marc.herbert@intel.com>
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2 changed files with 8 additions and 3 deletions
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@ -23,7 +23,9 @@ def analyze_headers(multiple_directories):
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ret = []
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for base_path in multiple_directories:
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for root, dirs, files in os.walk(base_path):
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for root, dirs, files in os.walk(base_path, topdown=True):
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dirs.sort()
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files.sort()
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for fn in files:
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# toolchain/common.h has the definition of __syscall which we
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@ -52,7 +54,9 @@ def parse_args():
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument("-i", "--include", required=True, action='append',
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help="Base include directory")
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help='''include directories recursively scanned
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for .h files. Can be specified multiple times:
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-i topdir1 -i topdir2 ...''')
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parser.add_argument(
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"-j", "--json-file", required=True,
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help="Write system call prototype information as json to file")
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@ -45,7 +45,8 @@ def main():
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else:
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dirlist.extend(args.directory)
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dirlist.extend(os.linesep)
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for root, dirs, files in os.walk(args.directory):
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for root, dirs, _ in os.walk(args.directory, topdown=True):
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dirs.sort()
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for subdir in dirs:
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if(args.create_links is not None):
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directory = os.path.join(root, subdir)
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