1 files changed, 50 insertions, 0 deletions
diff --git a/list-libs.py b/list-libs.py
new file mode 100755
index 0000000..c5bfe07
--- /dev/null
+++ b/list-libs.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+# For every given file, check its library dependencies, recursively.
+
+import argparse
+import re
+import subprocess
+import sys
+
+
+def check_libs_macos(obj):
+    p = subprocess.run(['otool', '-L', obj], stdout=subprocess.PIPE, text=True)
+    print(p.stdout)
+    try:
+        p.check_returncode()
+    except subprocess.CalledProcessError as e:
+        print(str(e), file=sys.stderr)
+    return re.findall(r'^\t(/\S+)', p.stdout, flags=re.M)
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument('files', nargs='+',
+                    help='Executable or library files to check')
+
+
+def main():
+    args = parser.parse_args()
+
+    if sys.platform == 'darwin':
+        check_libs = check_libs_macos
+    elif sys.platform == 'linux':
+        print('If you trust your program, find its dependencies with:')
+        print('LD_DEBUG=files your-program --version 2>&1 | grep need')
+        return
+    else:
+        raise RuntimeError('Unsupported platform')
+
+    # Queue, top item is at the end.
+    queue = args.files[::-1]
+    seen = set()
+    while queue:
+        obj = queue.pop()
+        if obj in seen:
+            continue
+        objs = check_libs(obj)
+        queue.extend(objs[::-1])
+        seen.add(obj)
+
+
+if __name__ == '__main__':
+    main()