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#!/usr/bin/env python3
import os
import shutil
import click
import subprocess
def get_binary_arches(app_dir):
universal = []
silicon = []
intel = []
for dirpath, dirnames, filenames in os.walk(app_dir):
for basename in filenames:
filename = os.path.join(dirpath, basename)
if os.path.isfile(filename):
out = subprocess.check_output(["file", filename]).decode("utf-8")
if (
"Mach-O 64-bit executable" in out
or "Mach-O 64-bit bundle" in out
or "Mach-O 64-bit dynamically linked shared library" in out
):
arm64, x86 = False, False
if "arm64" in out:
arm64 = True
if "x86_64" in out:
x86 = True
if arm64 and x86:
universal.append(filename)
elif arm64:
silicon.append(filename)
elif x86:
intel.append(filename)
return universal, silicon, intel
@click.command()
@click.argument("intel_app", type=click.Path(exists=True))
@click.argument("silicon_app", type=click.Path(exists=True))
@click.argument("output_app", type=click.Path(exists=False))
def main(intel_app, silicon_app, output_app):
# Get the list of binaries in each app
print("Looking up binaries from Intel app:", intel_app)
intel_universal, intel_silicon, intel_intel = get_binary_arches(intel_app)
print("Looking up binaries from Silicon app:", silicon_app)
silicon_universal, silicon_silicon, silicon_intel = get_binary_arches(silicon_app)
# Find which binaries should be merged
intel_intel_filenames = [i[len(intel_app) + 1 :] for i in intel_intel]
silicon_silicon_filenames = [i[len(silicon_app) + 1 :] for i in silicon_silicon]
intersection = set(intel_intel_filenames).intersection(
set(silicon_silicon_filenames)
)
# Copy the Silicon app to the output app
print("Copying the app bundle for the output app")
shutil.copytree(silicon_app, output_app, symlinks=True)
# Merge them
for filename in intersection:
print(f"Merging {filename}")
intel_binary = os.path.join(intel_app, filename)
silicon_binary = os.path.join(silicon_app, filename)
output_binary = os.path.join(output_app, filename)
subprocess.run(
["lipo", "-create", intel_binary, silicon_binary, "-output", output_binary]
)
print(f"Merge complete: {output_app}")
if __name__ == "__main__":
main()
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