From 33f7c9859096747d0a6ac16849e3e9d274d43dc3 Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Thu, 17 Dec 2009 11:57:56 +0000
Subject: [PATCH] Fix a problem of RTTI data initialization in the libraries
 loaded by Python (SWIG-modules, etc). Additional fix: dl module can be
 unavaiable in Python.

---
 src/KERNEL_PY/salome.py | 39 +++++++++++++++++++++++++++++++++++++--
 1 file changed, 37 insertions(+), 2 deletions(-)

diff --git a/src/KERNEL_PY/salome.py b/src/KERNEL_PY/salome.py
index 9f7b0b1f7..f6afea4d1 100755
--- a/src/KERNEL_PY/salome.py
+++ b/src/KERNEL_PY/salome.py
@@ -85,8 +85,43 @@ variables:
 from salome_kernel import *
 from salome_study import *
 from salome_iapp import *
-import dl, sys
-sys.setdlopenflags(dl.RTLD_NOW | dl.RTLD_GLOBAL)
+
+
+#
+# The next block is workaround for the problem of shared symbols loading for the extension modules (e.g. SWIG-generated)
+# that causes RTTI unavailable in some cases. To solve this problem, sys.setdlopenflags() function is used.
+# Depending on the Python version and platform, the dlopen flags can be defined in the dl, DLFUN or ctypes module.
+# 
+import sys
+flags = None
+if not flags:
+    try:
+        # dl module can be unavailable
+        import dl
+        flags = dl.RTLD_NOW | dl.RTLD_GLOBAL
+    except:
+        pass
+    pass
+if not flags:
+    try:
+        # DLFCN module can be unavailable
+        import DLFCN
+        flags = DLFCN.RTLD_NOW | DLFCN.RTLD_GLOBAL
+    except:
+        pass
+    pass
+if not flags:
+    try:
+        # ctypes module can be unavailable
+        import ctypes
+        flags = ctypes.RTLD_GLOBAL
+    except:
+        pass
+    pass
+    
+if flags:
+    sys.setdlopenflags(flags)
+    pass
 
 orb, lcc, naming_service, cm,sg=None,None,None,None,None
 myStudyManager, myStudyId, myStudy, myStudyName=None,None,None,None
-- 
2.39.2