add sam7x scons script.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1475 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/sam7x/SConscript

@@ -0,0 +1,19 @@
+import rtconfig
+Import('RTT_ROOT')
+from building import *
+
+src_bsp = ['application.c', 'startup.c', 'board.c']
+src_drv = ['serial.c']
+
+if GetDepend('RT_USING_DFS'):
+	src_drv += ['sd.c']
+
+if GetDepend('RT_USING_LWIP'):
+	src_drv += ['sam7x_emac.c']
+
+
+src	= File(src_bsp + src_drv)
+CPPPATH = [RTT_ROOT + '/bsp/sam7x']
+group = DefineGroup('Startup', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')