PIP_NO_FILESYSTEM and PIP_NO_THREADS

libs/main/thread/pimutex.cpp

@@ -107,6 +107,7 @@
 //! \}
 
 
+#ifndef PIP_NO_THREADS
 #include "pimutex.h"
 
 #include "piincludes_p.h"
@@ -228,3 +229,4 @@ void PIMutex::destroy() {
 	pthread_mutex_destroy(&(PRIVATE->mutex));
 #endif
 }
+#endif // PIP_NO_THREADS