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#!/usr/bin/env python3
"""
Based on Dolphin's BuildMacOSUniversalBinary.py
"""
import filecmp
import glob
import os
import shutil
import sys
def lipo(path0, path1, dst):
if subprocess.call(["lipo", "-create", "-output", dst, path0, path1]) != 0:
print(f"WARNING: {path0} and {path1} cannot be lipo'd")
shutil.copy(path0, dst)
def recursive_merge_binaries(src0, src1, dst):
"""
Merges two build trees together for different architectures into a single
universal binary.
The rules for merging are:
1) Files that exist in either src tree are copied into the dst tree
2) Files that exist in both trees and are identical are copied over
unmodified
3) Files that exist in both trees and are non-identical are lipo'd
4) Symlinks are created in the destination tree to mirror the hierarchy in
the source trees
"""
# Check that all files present in the folder are of the same type and that
# links link to the same relative location
for newpath0 in glob.glob(src0+"/*"):
filename = os.path.basename(newpath0)
newpath1 = os.path.join(src1, filename)
if not os.path.exists(newpath1):
continue
if os.path.islink(newpath0) and os.path.islink(newpath1):
if os.path.relpath(newpath0, src0) == os.path.relpath(newpath1, src1):
continue
if os.path.isdir(newpath0) and os.path.isdir(newpath1):
continue
# isfile() can be true for links so check that both are not links
# before checking if they are both files
if (not os.path.islink(newpath0)) and (not os.path.islink(newpath1)):
if os.path.isfile(newpath0) and os.path.isfile(newpath1):
continue
raise Exception(f"{newpath0} and {newpath1} cannot be " +
"merged into a universal binary because they are of " +
"incompatible types. Perhaps the installed libraries" +
" are from different versions for each architecture")
for newpath0 in glob.glob(src0+"/*"):
filename = os.path.basename(newpath0)
newpath1 = os.path.join(src1, filename)
new_dst_path = os.path.join(dst, filename)
if os.path.islink(newpath0):
# Symlinks will be fixed after files are resolved
continue
if not os.path.exists(newpath1):
if os.path.isdir(newpath0):
shutil.copytree(newpath0, new_dst_path)
else:
shutil.copy(newpath0, new_dst_path)
continue
if os.path.isdir(newpath1):
os.makedirs(new_dst_path)
recursive_merge_binaries(newpath0, newpath1, new_dst_path)
continue
if filecmp.cmp(newpath0, newpath1):
shutil.copy(newpath0, new_dst_path)
else:
lipo(newpath0, newpath1, new_dst_path)
# Loop over files in src1 and copy missing things over to dst
for newpath1 in glob.glob(src1+"/*"):
filename = os.path.basename(newpath1)
newpath0 = os.path.join(src0, filename)
new_dst_path = os.path.join(dst, filename)
if (not os.path.exists(newpath0)) and (not os.path.islink(newpath1)):
if os.path.isdir(newpath1):
shutil.copytree(newpath1, new_dst_path)
else:
shutil.copy(newpath1, new_dst_path)
# Fix up symlinks for path0
for newpath0 in glob.glob(src0+"/*"):
filename = os.path.basename(newpath0)
new_dst_path = os.path.join(dst, filename)
if os.path.islink(newpath0):
relative_path = os.path.relpath(os.path.realpath(newpath0), src0)
os.symlink(relative_path, new_dst_path)
# Fix up symlinks for path1
for newpath1 in glob.glob(src1+"/*"):
filename = os.path.basename(newpath1)
new_dst_path = os.path.join(dst, filename)
newpath0 = os.path.join(src0, filename)
if os.path.islink(newpath1) and not os.path.exists(newpath0):
relative_path = os.path.relpath(os.path.realpath(newpath1), src1)
os.symlink(relative_path, new_dst_path)
if __name__ == "__main__":
recursive_merge_binaries(sys.argv[1], sys.argv[2], sys.argv[3])
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