stats: (fixes #228) Disable bindings for SQLite options when not enabled

Further work on patch originally started by Tommaso Pecorella in the tracker

src/stats/bindings/modulegen_customizations.py

@@ -3,10 +3,10 @@ import os
 def post_register_types(root_module):
     enabled_features = os.environ['NS3_ENABLED_FEATURES'].split(',')
 
-    # if no sqlite, the class SqliteDataOutput is disabled
-    if 'SqliteDataOutput' not in enabled_features:
-        try:
-            root_module.classes.remove(root_module['ns3::SqliteDataOutput'])
-        except KeyError:
-            pass
-
+    # If no sqlite support, disable bindings for those (optional) features
+    if 'SQLiteStats' not in enabled_features:
+        for clsname in ['SimpleRefCount< ns3::SQLiteOutput, ns3::empty, ns3::DefaultDeleter<ns3::SQLiteOutput> >', 'SQLiteOutput', 'SqliteDataOutput', 'DefaultDeleter< ns3::SQLiteOutput >']: 
+            try:
+                root_module.classes.remove(root_module['ns3::%s' % clsname])
+            except:
+                pass

src/stats/wscript

@@ -6,11 +6,11 @@ def configure(conf):
                                   mandatory=False)
 
     conf.env['SQLITE_STATS'] = have_sqlite3
-    conf.report_optional_feature("SqliteDataOutput", "SQlite stats data output",
-                                 conf.env['SQLITE_STATS'],
-                                 "library 'sqlite3' not found")
     have_sem = conf.check_nonfatal(header_name='semaphore.h', define_name='HAVE_SEMAPHORE_H')
     conf.env['SEMAPHORE_ENABLED'] = have_sem
+    conf.report_optional_feature("SQLiteStats", "SQLite stats support",
+                                 conf.env['SQLITE_STATS'] and conf.env['SEMAPHORE_ENABLED'],
+                                 "library 'sqlite3' and/or semaphore.h not found")
     conf.write_config_header('ns3/stats-config.h', top=True)
 
 def build(bld):