import RT-Thread@9217865c without bsp, libcpu and components/net

examples/utest/testcases/posix/errno_h/SConscript

@@ -0,0 +1,15 @@
+import rtconfig
+Import('RTT_ROOT')
+from building import *
+
+# get current directory
+cwd = GetCurrentDir()
+path = [cwd]
+src = []
+
+if GetDepend('RTT_POSIX_TESTCASE_ERRNO_H'):
+    src += Glob('./definitions/*.c')
+
+group = DefineGroup('rtt_posix_testcase', src, depend = ['RTT_POSIX_TESTCASE_ERRNO_H'], CPPPATH = path)
+
+Return('group')