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# Copyright 2020 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Strip arm64e architecture from a binary if present."""
import argparse
import os
import shutil
import subprocess
import sys
def check_output(command):
"""Returns the output from |command| or propagates error, quitting script."""
process = subprocess.Popen(
command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
outs, errs = process.communicate()
if process.returncode:
sys.stderr.write('error: command failed with retcode %d: %s\n\n' %
(process.returncode, ' '.join(map(repr, command))))
sys.stderr.write(errs.decode('UTF-8', errors='ignore'))
sys.exit(process.returncode)
return outs.decode('UTF-8')
def check_call(command):
"""Invokes |command| or propagates error."""
check_output(command)
def parse_args(args):
"""Parses the command-line."""
parser = argparse.ArgumentParser()
parser.add_argument('--input', required=True, help='Path to input binary')
parser.add_argument('--output', required=True, help='Path to output binary')
parser.add_argument('--xcode-version', required=True, help='Version of Xcode')
return parser.parse_args(args)
def get_archs(path):
"""Extracts the architectures present in binary at |path|."""
outputs = check_output(["xcrun", "lipo", "-info", os.path.abspath(path)])
return outputs.split(': ')[-1].split()
def main(args):
parsed = parse_args(args)
outdir = os.path.dirname(parsed.output)
if not os.path.isdir(outdir):
os.makedirs(outdir)
if os.path.exists(parsed.output):
os.unlink(parsed.output)
# As "lipo" fails with an error if asked to remove an architecture that is
# not included, only use it if "arm64e" is present in the binary. Otherwise
# simply copy the file.
if 'arm64e' in get_archs(parsed.input):
check_output([
"xcrun", "lipo", "-remove", "arm64e", "-output",
os.path.abspath(parsed.output),
os.path.abspath(parsed.input)
])
else:
shutil.copy(parsed.input, parsed.output)
if __name__ == '__main__':
main(sys.argv[1:])
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