Split bindings output between core and modules!

Source/bindings/scripts/idl_compiler.py

Index: Source/bindings/scripts/idl_compiler.py
diff --git a/Source/bindings/scripts/idl_compiler.py b/Source/bindings/scripts/idl_compiler.py
index a339be30bc5f188fa46e2e1028b19221f1dfc8c0..6728aff45c10cadb38a7d536c0c5c8e7dd531e08 100755
--- a/Source/bindings/scripts/idl_compiler.py
+++ b/Source/bindings/scripts/idl_compiler.py
@@ -45,6 +45,8 @@ from utilities import write_file
 
 def parse_options():
     parser = OptionParser()
+    parser.add_option('--cache-directory',
+                      help='cache directory, defaults to output directory')
     parser.add_option('--output-directory')
     parser.add_option('--interfaces-info-file')
     parser.add_option('--write-file-only-if-changed', type='int')
@@ -77,9 +79,9 @@ class IdlCompiler(object):
     """
     __metaclass__ = abc.ABCMeta
 
-    def __init__(self, output_directory, code_generator=None,
-                 interfaces_info=None, interfaces_info_filename='',
-                 only_if_changed=False):
+    def __init__(self, output_directory, cache_directory='',
+                 code_generator=None, interfaces_info=None,
+                 interfaces_info_filename='', only_if_changed=False):
         """
         Args:
             interfaces_info:
@@ -87,6 +89,8 @@ class IdlCompiler(object):
                 (avoids auxiliary file in run-bindings-tests)
             interfaces_info_file: filename of pickled interfaces_info
         """
+        cache_directory = cache_directory or output_directory
+        self.cache_directory = cache_directory
         self.code_generator = code_generator
         if interfaces_info_filename:
             with open(interfaces_info_filename) as interfaces_info_file:
@@ -94,7 +98,7 @@ class IdlCompiler(object):
         self.interfaces_info = interfaces_info
         self.only_if_changed = only_if_changed
         self.output_directory = output_directory
-        self.reader = IdlReader(interfaces_info, output_directory)
+        self.reader = IdlReader(interfaces_info, cache_directory)
 
     def compile_and_write(self, idl_filename, output_filenames):
         interface_name = idl_filename_to_interface_name(idl_filename)
@@ -114,7 +118,7 @@ class IdlCompilerV8(IdlCompiler):
     def __init__(self, *args, **kwargs):
         IdlCompiler.__init__(self, *args, **kwargs)
         self.code_generator = CodeGeneratorV8(self.interfaces_info,
-                                              self.output_directory)
+                                              self.cache_directory)
 
     def compile_file(self, idl_filename):
         interface_name = idl_filename_to_interface_name(idl_filename)
@@ -129,6 +133,7 @@ def main():
     options, idl_filename = parse_options()
     idl_compiler = IdlCompilerV8(
         options.output_directory,
+        cache_directory=options.cache_directory,
         interfaces_info_filename=options.interfaces_info_file,
         only_if_changed=options.write_file_only_if_changed)
     idl_compiler.compile_file(idl_filename)