RTLD_GLOBAL for CDLL with wheels

shapely · Dec 30, 2017 · 1444ed2 · 1444ed2
1 parent e8e3c5e
commit 1444ed2
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/shapely/geos.py b/shapely/geos.py
@@ -4,7 +4,8 @@
 
 import atexit
 from ctypes import (
-    CDLL, cdll, pointer, string_at, DEFAULT_MODE, c_void_p, c_size_t, c_char_p)
+    CDLL, cdll, pointer, string_at, DEFAULT_MODE, RTLD_GLOBAL, c_void_p,
+    c_size_t, c_char_p)
 from ctypes.util import find_library
 import glob
 import logging
@@ -14,7 +15,8 @@
 import threading
 
 from .ctypes_declarations import prototype, EXCEPTION_HANDLER_FUNCTYPE
-from .errors import WKBReadingError, WKTReadingError, TopologicalError, PredicateError
+from .errors import (
+    WKBReadingError, WKTReadingError, TopologicalError, PredicateError)
 from . import ftools
 
 
@@ -24,6 +26,7 @@
 # Find and load the GEOS and C libraries
 # If this ever gets any longer, we'll break it into separate modules
 
+
 def load_dll(libname, fallbacks=None, mode=DEFAULT_MODE):
     lib = find_library(libname)
     dll = None
@@ -82,7 +85,7 @@ def load_dll(libname, fallbacks=None, mode=DEFAULT_MODE):
     geos_whl_dylib = os.path.abspath(os.path.join(os.path.dirname(
         __file__), '.dylibs/libgeos_c.1.dylib'))
     if os.path.exists(geos_whl_dylib):
-        _lgeos = CDLL(geos_whl_dylib)
+        _lgeos = CDLL(geos_whl_dylib, mode=RTLD_GLOBAL)
         LOG.debug("Found GEOS DLL: %r, using it.", _lgeos)
 
     else: