[BSP] Fix the scons compiling issue in mb9bf568r if use armcc.

bsp/mb9bf568r/rtconfig.py

@@ -10,11 +10,11 @@ if os.getenv('RTT_CC'):
     CROSS_TOOL = os.getenv('RTT_CC')
 
 if  CROSS_TOOL == 'gcc':
-    PLATFORM 	= 'gcc'
-    EXEC_PATH 	= r'D:/Program Files (x86)/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin'
+    PLATFORM    = 'gcc'
+    EXEC_PATH   = r'D:/Program Files (x86)/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin'
 elif CROSS_TOOL == 'keil':
-    PLATFORM 	= 'armcc'
-    EXEC_PATH 	= 'D:/Keil'
+    PLATFORM    = 'armcc'
+    EXEC_PATH   = 'C:/Keil_MDK_471'
 elif CROSS_TOOL == 'iar':
     print '================ERROR============================'
     print 'Not support iar yet!'
@@ -59,6 +59,7 @@ if PLATFORM == 'gcc':
 elif PLATFORM == 'armcc':
     # toolchains
     CC = 'armcc'
+    CXX = 'armcc'
     AS = 'armasm'
     AR = 'armar'
     LINK = 'armlink'
@@ -81,4 +82,5 @@ elif PLATFORM == 'armcc':
     else:
         CFLAGS += ' -O2'
 
+    CXXFLAGS = CFLAGS
     POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'