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#!/usr/bin/env python
#
# This is be used to verify that all the dependant libraries of a Mac OS X executable
# are present and that they are backwards compatible with at least 10.5.
# Run with an executable as parameter
# Will return 0 if the executable an all libraries are OK
# Returns != 0 and prints some textural description on error
#
# Author: Marius Kintel <marius@kintel.net>
#
# This script lives here:
# https://github.com/kintel/MacOSX-tools
#
import sys
import os
import subprocess
import re
DEBUG = False
def usage():
print >> sys.stderr, "Usage: " + sys.argv[0] + " <executable>"
sys.exit(1)
# Try to find the given library by searching in the typical locations
# Returns the full path to the library or None if the library is not found.
def lookup_library(file):
found = None
if not re.match("/", file):
if re.search("@executable_path", file):
abs = re.sub("^@executable_path", executable_path, file)
if os.path.exists(abs): found = abs
if DEBUG: print "Lib in @executable_path found: " + found
elif re.search("\.app/", file):
found = file
if DEBUG: print "App found: " + found
elif re.search("\.framework/", file):
found = os.path.join("/Library/Frameworks", file)
if DEBUG: print "Framework found: " + found
else:
for path in os.getenv("DYLD_LIBRARY_PATH").split(':'):
abs = os.path.join(path, file)
if os.path.exists(abs): found = abs
if DEBUG: print "Library found: " + found
else:
found = file
return found
# Returns a list of dependent libraries, excluding system libs
def find_dependencies(file):
libs = []
args = ["otool", "-L", file]
if DEBUG: print "Executing " + " ".join(args)
p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
output,err = p.communicate()
if p.returncode != 0:
print "Failed with return code " + str(p.returncode) + ":"
print err
return None
deps = output.split('\n')
for dep in deps:
# print dep
dep = re.sub(".*:$", "", dep) # Take away header line
dep = re.sub("^\t", "", dep) # Remove initial tabs
dep = re.sub(" \(.*\)$", "", dep) # Remove trailing parentheses
if len(dep) > 0 and not re.search("/System/Library", dep) and not re.search("/usr/lib", dep):
libs.append(dep)
return libs
def validate_lib(lib):
p = subprocess.Popen(["otool", "-l", lib], stdout=subprocess.PIPE)
output = p.communicate()[0]
if p.returncode != 0: return False
if re.search("LC_DYLD_INFO_ONLY", output):
print "Error: Requires Snow Leopard: " + lib
return False
p = subprocess.Popen(["lipo", lib, "-verify_arch", "x86_64"], stdout=subprocess.PIPE)
output = p.communicate()[0]
if p.returncode != 0:
print "Error: x86_64 architecture not supported: " + lib
return False
p = subprocess.Popen(["lipo", lib, "-verify_arch", "i386"], stdout=subprocess.PIPE)
output = p.communicate()[0]
if p.returncode != 0:
print "Error: i386 architecture not supported: " + lib
return False
return True
if __name__ == '__main__':
error = False
if len(sys.argv) != 2: usage()
executable = sys.argv[1]
if DEBUG: print "Processing " + executable
executable_path = os.path.dirname(executable)
# processed is a dict {libname : [parents]} - each parent is dependant on libname
processed = {}
pending = [executable]
processed[executable] = []
while len(pending) > 0:
dep = pending.pop()
if DEBUG: print "Evaluating " + dep
deps = find_dependencies(dep)
assert(deps)
for d in deps:
absfile = lookup_library(d)
if not re.match(executable_path, absfile):
print "Error: External dependency " + d
sys.exit(1)
if absfile == None:
print "Not found: " + d
print " ..required by " + str(processed[dep])
error = True
continue
if absfile in processed:
processed[absfile].append(dep)
else:
processed[absfile] = [dep]
if DEBUG: print "Pending: " + absfile
pending.append(absfile)
for dep in processed:
if DEBUG: print "Validating: " + dep
# print " " + str(processed[dep])
if not validate_lib(dep):
print "..required by " + str(processed[dep])
error = True
if error: sys.exit(1)
else: sys.exit(0)
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