Update SConscript

Author: BernardXiong

bsp/stm32/stm32f072-st-nucleo/applications/SConscript

@@ -1,10 +1,8 @@
-Import('RTT_ROOT')
-Import('rtconfig')
 from building import *
 
 cwd = GetCurrentDir()
-src = Glob('*.c')
-CPPPATH = [cwd, str(Dir('#'))]
+src = Glob('*.c') + Glob('*.cpp')
+CPPPATH = [cwd]
 
 group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)