[modify] those file name is risky if you use both "c++" and "POSIX pthread".

components/cplusplus/cxx_Semaphore.cpp

@@ -7,7 +7,7 @@
  * Date           Author       Notes
  */
 
-#include "Semaphore.h"
+#include "cxx_semaphore.h"
 
 using namespace rtthread;