diff --git a/src/blade/backend.py b/src/blade/backend.py
index 6f2fc67f..6c26f44c 100644
--- a/src/blade/backend.py
+++ b/src/blade/backend.py
@@ -666,7 +666,7 @@ def _builtin_tools_prefix(self):
                 with open(builtin_tools_file, 'w') as f:
                     print('@echo off', file=f)
                     print('set "PYTHONPATH={};%PYTHONPATH%"'.format(self.blade_path), file=f)
-                    print('{} %*'.format(python), file=f)
+                    print('"{}" %*'.format(python), file=f)
                 self.__builtin_tools_prefix = builtin_tools_file
             else:
                 # On posix system, a simply environment prefix is enough to do it.
diff --git a/src/blade/toolchain.py b/src/blade/toolchain.py
index c9f3873f..e4f4786b 100644
--- a/src/blade/toolchain.py
+++ b/src/blade/toolchain.py
@@ -20,7 +20,7 @@
 
 from blade import config
 from blade import console
-from blade.util import var_to_list, iteritems, run_command
+from blade.util import var_to_list, iteritems, override, run_command
 
 # example: Cuda compilation tools, release 11.0, V11.0.194
 _nvcc_version_re = re.compile(r'V(\d+\.\d+\.\d+)')
@@ -166,12 +166,23 @@ def object_file_of(self, source_file):
         """
         raise NotImplementedError
 
-    def library_file_name(self, name):
+    def static_library_name(self, name):
+        """
+        Get the static library file name from the name.
+        """
+        raise NotImplementedError
+
+    def dynamic_library_name(self, name):
         """
         Get the library file name from the name.
         """
         raise NotImplementedError
 
+    def executable_file_name(self, name):
+        """
+        Get the executable file name from the name.
+        """
+        raise NotImplementedError
 
 # To verify whether a header file is included without depends on the library it belongs to,
 # we use the gcc's `-H` option to generate the inclusion stack information, see
@@ -227,16 +238,20 @@ def get_cc_target_arch():
             return stdout.strip()
         return ''
 
+    @override
     def is_kind_of(self, vendor):
-        """Is cc is used for C/C++ compilation match vendor."""
         return vendor in ('gcc', 'clang', 'gcc')
 
+    @override
     def object_file_of(self, source_file):
-        """
-        Get the object file name from the source file.
-        """
         return source_file + '.o'
 
+    @override
+    def executable_file_name(self, name):
+        if os.name == 'nt':
+            return name + '.exe'
+        return name
+
     def _cc_compile_command_wrapper_template(self, inclusion_stack_file, cuda=False):
         """Calculate the cc compile command wrapper template."""
         print_header_option = '-H'
@@ -380,28 +395,17 @@ def get_cc_target_arch():
             return stdout.strip()
         return ''
 
-    def get_cc_commands(self):
-        return self.cc, self.cxx, self.ld
-
-    def get_cc(self):
-        return self.cc
-
-    def get_cc_version(self):
-        return self.cc_version
-
-    def get_ar(self):
-        return self.ar
-
+    @override
     def is_kind_of(self, vendor):
-        """Is cc is used for C/C++ compilation match vendor."""
         return vendor in ('msvc')
 
+    @override
     def object_file_of(self, source_file):
-        """
-        Get the object file name from the source file.
-        """
         return source_file + '.obj'
 
+    @override
+    def executable_file_name(self, name):
+        return name + '.exe'
 
     def filter_cc_flags(self, flag_list, language='c'):
         """Filter out the unrecognized compilation flags."""
@@ -494,6 +498,7 @@ def get_shared_link_command(self):
     def _get_link_args(self):
         return ' /nologo /OUT:${out} ${intrinsic_linkflags} ${linkflags} ${target_linkflags} @${out}.rsp ${extra_linkflags}'
 
+
 def default(bits):
     if os.name == 'nt':
         return CcToolChainMsvc()
diff --git a/src/blade/util.py b/src/blade/util.py
index a618cb61..466cc873 100644
--- a/src/blade/util.py
+++ b/src/blade/util.py
@@ -21,6 +21,7 @@
 import inspect
 import json
 import os
+import re
 import signal
 import string
 import subprocess
@@ -379,3 +380,50 @@ def which(cmd):
     if returncode != 0:
         return None
     return stdout.strip()
+
+
+def override(method):
+    """
+    Check method override.
+    https://stackoverflow.com/a/14631397
+    """
+
+    stack = inspect.stack()
+    base_classes = _get_bass_classes(stack)
+
+    # TODO: check signature
+    # sig = inspect.signature(method)
+    error = "methid '%s' doesn't override any base class method" % method.__name__
+    assert( any( hasattr(cls, method.__name__) for cls in base_classes ) ), error
+    return method
+
+
+def _get_bass_classes(stack):
+    base_classes = re.search(r'class.+\((.+)\)\s*\:', stack[2][4][0]).group(1)
+
+    # handle multiple inheritance
+    base_classes = [s.strip() for s in base_classes.split(',')]
+    if not base_classes:
+        raise ValueError('override decorator: unable to determine base class')
+
+    # stack[0]=override, stack[1]=inside class def'n, stack[2]=outside class def'n
+    derived_class_locals = stack[2][0].f_locals
+
+    # replace each class name in base_classes with the actual class type
+    for i, base_class in enumerate(base_classes):
+
+        if '.' not in base_class:
+            base_classes[i] = derived_class_locals[base_class]
+        else:
+            components = base_class.split('.')
+
+            # obj is either a module or a class
+            obj = derived_class_locals[components[0]]
+
+            for c in components[1:]:
+                assert(inspect.ismodule(obj) or inspect.isclass(obj))
+                obj = getattr(obj, c)
+
+            base_classes[i] = obj
+
+    return base_classes