update bsp lpc2478.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1853 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/lpc2478/SConscript

@@ -1,11 +1,14 @@
-import rtconfig
+# for module compiling
+import os
 Import('RTT_ROOT')
-from building import *
 
-src_bsp   = ['application.c', 'startup.c', 'board.c']
+cwd = str(Dir('#'))
+objs = []
+list = os.listdir(cwd)
 
-src = File(src_bsp)
-CPPPATH = [RTT_ROOT + '/bsp/lpc2478']
-group = DefineGroup('Startup', src, depend = [''], CPPPATH = CPPPATH)
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
 
-Return('group')
+Return('objs')