diff -ru openbabel-2.3.2.patched/include/openbabel/alias.h openbabel-2.3.2/include/openbabel/alias.h
--- openbabel-2.3.2.patched/include/openbabel/alias.h	2016-08-04 12:35:49.111515096 +0200
+++ openbabel-2.3.2/include/openbabel/alias.h	2010-09-07 19:07:53.000000000 +0200
@@ -115,7 +115,7 @@
   }
   bool        FromNameLookup(OBMol& mol, const unsigned int atomindex);
 #ifdef HAVE_SHARED_POINTER
-  typedef std::vector< std::pair<std::string, shared_ptr<OBSmartsPattern> > > SmartsTable;
+  typedef std::vector< std::pair<std::string, std::tr1::shared_ptr<OBSmartsPattern> > > SmartsTable;
   static bool LoadFile(SmartsTable& smtable);
 #endif
 };
diff -ru openbabel-2.3.2.patched/include/openbabel/shared_ptr.h openbabel-2.3.2/include/openbabel/shared_ptr.h
--- openbabel-2.3.2.patched/include/openbabel/shared_ptr.h	2016-08-04 12:34:32.386554217 +0200
+++ openbabel-2.3.2/include/openbabel/shared_ptr.h	2011-10-12 22:24:02.000000000 +0200
@@ -21,7 +21,7 @@
   #define shared_ptr boost::shared_ptr
 #else
   #include <memory>
-  #if __GNUC__ == 4  //&& __GNUC_MINOR__ < 3  removed at the suggestion of Konstantin Tokarev
+  #if __GNUC__ >= 4  //&& __GNUC_MINOR__ < 3  removed at the suggestion of Konstantin Tokarev
     #include <tr1/memory>
   #endif
   using std::tr1::shared_ptr;
diff -ru openbabel-2.3.2.patched/src/alias.cpp openbabel-2.3.2/src/alias.cpp
--- openbabel-2.3.2.patched/src/alias.cpp	2016-08-04 12:36:42.821486062 +0200
+++ openbabel-2.3.2/src/alias.cpp	2012-10-05 22:17:36.000000000 +0200
@@ -270,7 +270,7 @@
         //OBSmartsPattern objects are not copyable without complications,
         //so reference semantics used.
 
-        shared_ptr<OBSmartsPattern> psp(new OBSmartsPattern);
+        std::tr1::shared_ptr<OBSmartsPattern> psp(new OBSmartsPattern);
         psp->Init(ssmarts.str());
         smtable.push_back(make_pair(vec[0], psp));
       }