diff --git a/emscripten.py b/emscripten.py
index 1a87c7889..011bc22f7 100755
--- a/emscripten.py
+++ b/emscripten.py
@@ -21,7 +21,7 @@ def path_from_root(*pathelems):
   return os.path.join(__rootpath__, *pathelems)
 
 configuration = shared.Configuration(environ=os.environ)
-temp_files = shared.make_temp_files()
+temp_files = configuration.get_temp_files()
 
 def scan(ll, settings):
   # blockaddress(@main, %23)
diff --git a/tools/js_optimizer.py b/tools/js_optimizer.py
index f2d3b7dbc..ad3a1f792 100644
--- a/tools/js_optimizer.py
+++ b/tools/js_optimizer.py
@@ -2,7 +2,8 @@
 import os, sys, subprocess, multiprocessing, re
 import shared
 
-temp_files = shared.make_temp_files()
+configuration = shared.configuration
+temp_files = configuration.get_temp_files()
 
 __rootpath__ = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
 def path_from_root(*pathelems):
diff --git a/tools/shared.py b/tools/shared.py
index 9b2b4561a..f0c79dae5 100644
--- a/tools/shared.py
+++ b/tools/shared.py
@@ -317,10 +317,45 @@ class Configuration:
       except Exception, e:
         print >> sys.stderr, e, 'Could not create canonical temp dir. Check definition of TEMP_DIR in ~/.emscripten'
 
+  def get_temp_files(self):
+    return TempFiles(
+      tmp=self.TEMP_DIR if not self.DEBUG else self.EMSCRIPTEN_TEMP_DIR,
+      save_debug_files=os.environ.get('EMCC_DEBUG_SAVE'))
+
   def debug_log(self, msg):
     if self.DEBUG:
       print >> sys.stderr, msg
 
+class TempFiles:
+  def __init__(self, tmp, save_debug_files=False):
+    self.tmp = tmp
+    self.save_debug_files = save_debug_files
+    
+    self.to_clean = []
+
+  def note(self, filename):
+    self.to_clean.append(filename)
+
+  def get(self, suffix):
+    """Returns a named temp file  with the given prefix."""
+    named_file = tempfile.NamedTemporaryFile(dir=self.tmp, suffix=suffix, delete=False)
+    self.note(named_file.name)
+    return named_file
+
+  def clean(self):
+    if self.save_debug_files:
+      print >> sys.stderr, 'not cleaning up temp files since in debug-save mode, see them in %s' % (self.tmp,)
+      return
+    for filename in self.to_clean:
+      try_delete(filename)
+    self.to_clean = []
+
+  def run_and_clean(self, func):
+    try:
+      return func()
+    finally:
+      self.clean()
+
 configuration = Configuration(environ=os.environ)
 DEBUG = configuration.DEBUG
 EMSCRIPTEN_TEMP_DIR = configuration.EMSCRIPTEN_TEMP_DIR
@@ -435,41 +470,6 @@ def try_delete(filename):
     except:
       pass
 
-class TempFiles:
-  def __init__(self, tmp, save_debug_files=False):
-    self.tmp = tmp
-    self.save_debug_files = save_debug_files
-    
-    self.to_clean = []
-
-  def note(self, filename):
-    self.to_clean.append(filename)
-
-  def get(self, suffix):
-    """Returns a named temp file  with the given prefix."""
-    named_file = tempfile.NamedTemporaryFile(dir=self.tmp, suffix=suffix, delete=False)
-    self.note(named_file.name)
-    return named_file
-
-  def clean(self):
-    if self.save_debug_files:
-      print >> sys.stderr, 'not cleaning up temp files since in debug-save mode, see them in %s' % (self.tmp,)
-      return
-    for filename in self.to_clean:
-      try_delete(filename)
-    self.to_clean = []
-
-  def run_and_clean(self, func):
-    try:
-      return func()
-    finally:
-      self.clean()
-
-def make_temp_files(configuration=configuration):
-  return TempFiles(
-    tmp=configuration.TEMP_DIR if not configuration.DEBUG else configuration.EMSCRIPTEN_TEMP_DIR,
-    save_debug_files=os.environ.get('EMCC_DEBUG_SAVE'))
-
 # Utilities
 
 def check_engine(engine):