magic install name fixing tool

fix-installnames-magic.py

#!/usr/bin/env python3
# Try to fix library names by looking them up
from subprocess import check_output
import re
from os import system
from os.path import basename, exists
from sys import argv
from glob import glob

if len(argv) < 3:
        print("USAGE: %s [binary] [search directory for libs]" % argv[0])
        exit(-1) 

bin = argv[1]
libdir = argv[2]

print("Checking %s" % bin)

libs = {}
for lib in  glob("%s/**/*.dylib" % libdir, recursive=True):
        libs[basename(lib)] = lib

out = check_output("otool -L %s" % bin, shell=True).strip()
files = []
for line in out.decode('ascii').split("\n"):
        if line.startswith("\t"):
                files += [line.strip().split("(")[0].strip()]

for path in files:
        if not exists(path):
                name = basename(path)
                if name in libs:
                        newPath = libs[name]
                        print("%s -> %s" % (path, newPath))
                        system("install_name_tool -change %s %s %s" % (path, newPath, bin))
                else:
                        print("not fixed: %s" % path)