FreeBSD: Inspect all libraries passed on command line and find broken ones -- and report a list of packages that might need rebuilding

find_broken_library_packages.py

import subprocess;
import sys;
import re;
import pprint;
import string;

pkgs = set(); # Packages that contain the broken libraries
d = dict(); # contains key: library name, and list of values: libraries that are not found.
nf_rgx=re.compile('^\s+(.+) =>.+\(0\)'); # Matches a 'not found' result from ldd
last_key="";
val="";

def pkgwhich(filename):
      p = subprocess.Popen(["pkg", "which", "-q", filename],
          stdout=subprocess.PIPE,
          stderr=subprocess.PIPE);
      for l in iter(p.stdout.readline, b''):
          line = l.decode('utf-8');
          itm=line.rstrip();
          pkgs.add(itm);

def ldd(filename):
    libs = []
    for x in filename:
        p = subprocess.Popen(["ldd", x],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE);
        for l in iter(p.stdout.readline, b''):
            line = l.decode('utf-8');
            # print (line);
            nm = nf_rgx.match(line);
            if nm:
                pkgwhich(x);
                val=nm.group(1);
                if x in d:
                    d[x].append(val);
                else:
                    d[x] = [val];

if __name__ == "__main__":
    if len(sys.argv) <= 1:
        print("Iterates over files on command line and prints broken ldd links. Usage: %s filename1 filename2 ..."%(sys.argv[0]));
    else:
        ldd(sys.argv[1:]);

pp = pprint.PrettyPrinter(indent=2);
pp.pprint(d);
print("Consider rebuilding the following packages:");
pp.pprint(pkgs);
# Example usage:
# cd /usr/local/lib
# find . -name "*"so | python3.6 path/to/find_broken_library_packages.py