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#!/usr/bin/env python3
import re
import os
import sys
import shutil
import subprocess
from functools import partial
sys_re = re.compile("^/System")
usr_re = re.compile("^/usr/lib/")
exe_re = re.compile("@executable_path")
def is_user_lib(objfile, libname):
return not sys_re.match(libname) and \
not usr_re.match(libname) and \
not exe_re.match(libname) and \
not "libobjc." in libname and \
not "libSystem." in libname and \
not "libc." in libname and \
not "libgcc." in libname and \
not os.path.basename(libname) == 'Python' and \
not os.path.basename(objfile) in libname and \
not "libswift" in libname
def otool(objfile, rapths):
command = "otool -L '%s' | grep -e '\t' | awk '{ print $1 }'" % objfile
output = subprocess.check_output(command, shell = True, universal_newlines=True)
libs = set(filter(partial(is_user_lib, objfile), output.split()))
libs_resolved = set()
libs_relative = set()
for lib in libs:
lib_path = resolve_lib_path(objfile, lib, rapths)
libs_resolved.add(lib_path)
if lib_path != lib:
libs_relative.add(lib)
return libs_resolved, libs_relative
def get_rapths(objfile):
rpaths = []
command = "otool -l '%s' | grep -A2 LC_RPATH | grep path" % objfile
pathRe = re.compile("^\s*path (.*) \(offset \d*\)$")
try:
result = subprocess.check_output(command, shell = True, universal_newlines=True)
except:
return rpaths
for line in result.splitlines():
rpaths.append(pathRe.search(line).group(1).strip())
return rpaths
def get_rpaths_dev_tools(binary):
command = "otool -l '%s' | grep -A2 LC_RPATH | grep path | grep \"Xcode\|CommandLineTools\"" % binary
result = subprocess.check_output(command, shell = True, universal_newlines=True)
pathRe = re.compile("^\s*path (.*) \(offset \d*\)$")
output = []
for line in result.splitlines():
output.append(pathRe.search(line).group(1).strip())
return output
def resolve_lib_path(objfile, lib, rapths):
if os.path.exists(lib):
return lib
if lib.startswith('@rpath/'):
lib = lib[len('@rpath/'):]
for rpath in rapths:
lib_path = os.path.join(rpath, lib)
if os.path.exists(lib_path):
return lib_path
elif lib.startswith('@loader_path/'):
lib = lib[len('@loader_path/'):]
lib_path = os.path.normpath(os.path.join(objfile, lib))
if os.path.exists(lib_path):
return lib_path
raise Exception('Could not resolve library: ' + lib)
def install_name_tool_change(old, new, objfile):
subprocess.call(["install_name_tool", "-change", old, new, objfile], stderr=subprocess.DEVNULL)
def install_name_tool_id(name, objfile):
subprocess.call(["install_name_tool", "-id", name, objfile], stderr=subprocess.DEVNULL)
def install_name_tool_add_rpath(rpath, binary):
subprocess.call(["install_name_tool", "-add_rpath", rpath, binary])
def install_name_tool_delete_rpath(rpath, binary):
subprocess.call(["install_name_tool", "-delete_rpath", rpath, binary])
def libraries(objfile, result = dict(), result_relative = set(), rapths = []):
rapths = get_rapths(objfile) + rapths
libs_list, libs_relative = otool(objfile, rapths)
result[objfile] = libs_list
result_relative |= libs_relative
for lib in libs_list:
if lib not in result:
libraries(lib, result, result_relative, rapths)
return result, result_relative
def lib_path(binary):
return os.path.join(os.path.dirname(binary), 'lib')
def lib_name(lib):
return os.path.join("@executable_path", "lib", os.path.basename(lib))
def process_libraries(libs_dict, libs_dyn, binary):
libs_set = set(libs_dict)
# Remove binary from libs_set to prevent a duplicate of the binary being
# added to the libs directory.
libs_set.remove(binary)
for src in libs_set:
name = lib_name(src)
dst = os.path.join(lib_path(binary), os.path.basename(src))
shutil.copy(src, dst)
os.chmod(dst, 0o755)
install_name_tool_id(name, dst)
if src in libs_dict[binary]:
install_name_tool_change(src, name, binary)
for p in libs_set:
if p in libs_dict[src]:
install_name_tool_change(p, lib_name(p), dst)
for lib in libs_dyn:
install_name_tool_change(lib, lib_name(lib), dst)
for lib in libs_dyn:
install_name_tool_change(lib, lib_name(lib), binary)
def process_swift_libraries(binary):
command = ['xcrun', '--find', 'swift-stdlib-tool']
swiftStdlibTool = subprocess.check_output(command, universal_newlines=True).strip()
# from xcode11 on the dynamic swift libs reside in a separate directory from
# the std one, might need versioned paths for future swift versions
swiftLibPath = os.path.join(swiftStdlibTool, '../../lib/swift-5.0/macosx')
swiftLibPath = os.path.abspath(swiftLibPath)
command = [swiftStdlibTool, '--copy', '--platform', 'macosx', '--scan-executable', binary, '--destination', lib_path(binary)]
if os.path.exists(swiftLibPath):
command.extend(['--source-libraries', swiftLibPath])
subprocess.check_output(command, universal_newlines=True)
print(">> setting additional rpath for swift libraries")
install_name_tool_add_rpath("@executable_path/lib", binary)
def remove_dev_tools_rapths(binary):
for path in get_rpaths_dev_tools(binary):
install_name_tool_delete_rpath(path, binary)
def main():
binary = os.path.abspath(sys.argv[1])
if not os.path.exists(lib_path(binary)):
os.makedirs(lib_path(binary))
print(">> gathering all linked libraries")
libs, libs_rel = libraries(binary)
print(">> copying and processing all linked libraries")
process_libraries(libs, libs_rel, binary)
print(">> removing rpath definitions towards dev tools")
remove_dev_tools_rapths(binary)
print(">> copying and processing swift libraries")
process_swift_libraries(binary)
if __name__ == "__main__":
main()
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