taken over cmakelists file

osal/linux/CMakeLists.txt

@@ -0,0 +1,25 @@
+target_sources(${LIB_FSFW_NAME} 
+	PRIVATE 
+		Clock.cpp
+		BinarySemaphore.cpp
+		CountingSemaphore.cpp
+		FixedTimeslotTask.cpp
+		InternalErrorCodes.cpp
+		MessageQueue.cpp
+		Mutex.cpp
+		MutexFactory.cpp
+		PeriodicPosixTask.cpp
+		PosixThread.cpp
+		QueueFactory.cpp
+		SemaphoreFactory.cpp
+		TaskFactory.cpp
+		TcUnixUdpPollingTask.cpp
+		TmTcUnixUdpBridge.cpp
+		Timer.cpp
+)
+
+target_link_libraries(${LIB_FSFW_NAME} 
+	PRIVATE
+		rt
+		pthread
+)