Add scripts/win-dll.py and adjust Makefile.in

1 files changed, 58 insertions, 0 deletions

diff --git a/scripts/win-dll.py b/scripts/win-dll.py
new file mode 100644
index 000000000..e77e7ed12
--- /dev/null
+++ b/scripts/win-dll.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+# Get non-system DLL dependencies
+import pefile
+import os
+import os.path
+import sys
+
+def is_system(filename):
+    """Return true if the file is a system file. Very ad-hoc."""
+    return filename.startswith('/c/Windows')
+
+def get_imports(filename):
+    """Return list of dll imports"""
+    if is_system(filename):
+        return []
+    with pefile.PE(filename) as pe:
+        try:
+            imports = pe.DIRECTORY_ENTRY_IMPORT
+        except AttributeError:
+            imports = []
+        return [e.dll.decode() for e in imports]
+
+def search_dll(name, libraries_path):
+    """Search :param name: in :param libraries_path:"""
+    for path in libraries_path:
+        filename = os.path.join(path, name)
+        if os.path.isfile(filename):
+            return filename
+    return None
+
+def get_dependencies(name, libraries_path, cache):
+    """Return the non-system dll dependencies of :param name:"""
+    deps = get_imports(name)
+    res = []
+    for lib in deps:
+        if lib in cache:
+            continue
+        # Search on the path
+        filename = search_dll(lib, libraries_path)
+        # Always add in the cache
+        cache[lib] = filename
+        if filename is not None:
+            if not is_system(filename):
+                res.append(filename)
+            res.extend(get_dependencies(filename, libraries_path, cache))
+    return res
+
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        print('usage: {} ldd-file'.format(sys.argv[0]))
+        sys.exit(1)
+
+    libraries_path = os.environ['PATH'].split(os.pathsep)
+    filename = sys.argv[1]
+    cache = {}
+    res = get_dependencies(filename, libraries_path, cache)
+    for f in res:
+        print(f)