-# MULTIPLE_THREAD FLAG Optional Flag to enable multi-thread build. If not specified, default\r
-# is "Disable". If your computer is multi-core or multiple CPUs,\r
-# enabling this feature will bring much benefit. \r
-# This feature is only available for "spawn" build mode, and \r
-# only for PLATFORM build. The clean, cleanall or\r
-# stand-alone module build is still using the normal way.\r
-MULTIPLE_THREAD = Enable\r
+# MAX_CONCURRENT_THREAD_NUMBER NUMBER Optional The number of concurrent threads. If not specified or set\r
+# to zero, tool automatically detect number of processor\r
+# threads. Recommend to set this value to one less than the\r
+# number of your computer cores or CPUs. When value set to 1,\r
+# means disable multi-thread build, value set to more than 1,\r
+# means user specify the thread number to build. Not specify\r
+# the default value in this file.\r
+# MAX_CONCURRENT_THREAD_NUMBER = 1\r
+\r
+\r
+# BUILD_RULE_CONF Filename Optional Specify the file name to use for the build rules that are followed\r
+# when generating Makefiles. If not specified, the file: \r
+# WORKSPACE/Conf/build_rule.txt will be used\r
+BUILD_RULE_CONF = Conf/build_rule.txt\r