diff --git a/tools/building.py b/tools/building.py
index 624245c202a2d41d1fb2984539ffa1bbe9a5f29c..79c013527b778294566ac79213b52c2cad54838a 100644
--- a/tools/building.py
+++ b/tools/building.py
@@ -274,6 +274,17 @@ def PrepareBuilding(env, root_directory, has_libcpu=False, remove_components = [
         genconfig()
         exit(0)
 
+    if env['PLATFORM'] != 'win32':
+        AddOption('--menuconfig', 
+                    dest = 'menuconfig',
+                    action = 'store_true',
+                    default = False,
+                    help = 'make menuconfig for RT-Thread BSP')
+        if GetOption('menuconfig'):
+            from menuconfig import menuconfig
+            menuconfig(Rtt_Root)
+            exit(0)
+
     # add comstr option
     AddOption('--verbose',
                 dest='verbose',
diff --git a/tools/menuconfig.py b/tools/menuconfig.py
index 9821f48ccbf178a4e1ae8af6341d1c86d13fb8e1..4ffcd9372fc4fd8a40aa1d32c5275b6dc3980949 100644
--- a/tools/menuconfig.py
+++ b/tools/menuconfig.py
@@ -29,23 +29,87 @@ def mk_rtconfig(filename):
                 empty_line = 1
                 continue
 
-            rtconfig.write('/*%s */\n' % line[1:])
+            comment_line = line[1:]
+            if line.startswith('# CONFIG_'): line = ' ' + line[9:]
+            else: line = line[1:]
+
+            rtconfig.write('/*%s */\n' % line)
             empty_line = 0
         else:
             empty_line = 0
-            setting = line.split('=', 1)
+            setting = line.split('=')
             if len(setting) >= 2:
                 if setting[0].startswith('CONFIG_'):
                     setting[0] = setting[0][7:]
 
+                # remove CONFIG_PKG_XX_PATH or CONFIG_PKG_XX_VER
+                if type(setting[0]) == type('a') and (setting[0].endswith('_PATH') or setting[0].endswith('_VER')):
+                    continue
+
                 if setting[1] == 'y':
                     rtconfig.write('#define %s\n' % setting[0])
                 else:
                     rtconfig.write('#define %s %s\n' % (setting[0], setting[1]))
 
+    if os.path.isfile('rtconfig_project.h'):
+        rtconfig.write('#include "rtconfig_project.h"\n')
+
+    rtconfig.write('\n')
     rtconfig.write('#endif\n')
     rtconfig.close()
 
 def config():
     mk_rtconfig('.config')
 
+def get_env_dir():
+    if os.environ.get('ENV_ROOT'):
+        return os.environ.get('ENV_ROOT')
+
+    home_dir = os.environ['HOME']
+    env_dir  = os.path.join(home_dir, '.env')
+
+    if not os.path.exists(env_dir):
+        return None
+
+    return env_dir
+
+def touch_env():
+    home_dir = os.environ['HOME']
+    env_dir  = os.path.join(home_dir, '.env')
+    if not os.path.exists(env_dir):
+        os.mkdir(env_dir)
+        os.mkdir(os.path.join(env_dir, 'local_pkgs'))
+        os.mkdir(os.path.join(env_dir, 'packages'))
+        kconfig = file(os.path.join(env_dir, 'packages', 'Kconfig'), 'w')
+
+# menuconfig for Linux
+def menuconfig(RTT_ROOT):
+    kconfig_dir = os.path.join(RTT_ROOT, 'tools', 'kconfig-frontends')
+    os.system('scons -C ' + kconfig_dir)
+
+    env_dir = get_env_dir()
+    if not env_dir:
+        touch_env()
+        env_dir = get_env_dir()
+
+    os.environ['PKGS_ROOT'] = os.path.join(env_dir, 'packages')
+
+    fn = '.config'
+
+    if os.path.isfile(fn):
+        mtime = os.path.getmtime(fn)
+    else:
+        mtime = -1
+
+    kconfig_cmd = os.path.join(RTT_ROOT, 'tools', 'kconfig-frontends', 'kconfig-mconf')
+    os.system(kconfig_cmd + ' Kconfig')
+
+    if os.path.isfile(fn):
+        mtime2 = os.path.getmtime(fn)
+    else:
+        mtime2 = -1
+
+    # make rtconfig.h
+    if mtime != mtime2:
+        mk_rtconfig(fn)
+