add POSIX thread directory.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1009 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/SConscript

@@ -12,6 +12,9 @@ if rtconfig.CROSS_TOOL == 'gcc':
 		rtconfig.RT_USING_MINILIBC = True
 		objs = objs + SConscript('libc/minilibc/SConscript')
 
+if 'RT_USING_PTHREAD' in dir(rtconfig) and rtconfig.RT_USING_PTHREAD:
+	objs = objs + SConscript('pthreads/SConscript')
+
 if 'RT_USING_FINSH' in dir(rtconfig) and rtconfig.RT_USING_FINSH:
 	objs = objs + SConscript('finsh/SConscript')