Expose RTLD_LOCAL and RTLD_GLOBAL always from the _ctypes extension module.

If RTLD_LOCAL is not #defined in any header file (Windows), set it to 0.
If RTLD_GLOBAL is not #defined, set it equal to RTLD_LOCAL.

This should fix ctypes on cygwin.

2 files changed, 3 insertions, 10 deletions

diff --git a/Lib/ctypes/__init__.py b/Lib/ctypes/__init__.py
index a005594..28ac180 100644
--- a/Lib/ctypes/__init__.py
+++ b/Lib/ctypes/__init__.py
@@ -9,11 +9,7 @@ from _ctypes import Union, Structure, Array
 from _ctypes import _Pointer
 from _ctypes import CFuncPtr as _CFuncPtr
 from _ctypes import __version__ as _ctypes_version
-try:
-    from _ctypes import RTLD_LOCAL, RTLD_GLOBAL
-except (ImportError, AttributeError):
-    RTLD_GLOBAL = RTLD_LOCAL = None
-
+from _ctypes import RTLD_LOCAL, RTLD_GLOBAL
 from _ctypes import ArgumentError
 
 from struct import calcsize as _calcsize
diff --git a/Lib/ctypes/_loader.py b/Lib/ctypes/_loader.py
index 6ab0296..7a48c1c 100644
--- a/Lib/ctypes/_loader.py
+++ b/Lib/ctypes/_loader.py
@@ -1,14 +1,11 @@
-# WORK IN PROGRESS!  DO NOT (yet) USE!
 import sys, os
 import ctypes
 
-__all__ = ["LibraryLoader", "RTLD_LOCAL", "RTLD_GLOBAL"]
-
 if os.name in ("nt", "ce"):
     from _ctypes import LoadLibrary as dlopen
-    RTLD_LOCAL = RTLD_GLOBAL = None
 else:
-    from _ctypes import dlopen, RTLD_LOCAL, RTLD_GLOBAL
+    from _ctypes import dlopen
+from _ctypes import RTLD_LOCAL, RTLD_GLOBAL
 
 # _findLib(name) returns an iterable of possible names for a library.
 if os.name in ("nt", "ce"):