diff --git a/CMakeLists.txt b/CMakeLists.txt
index 775b679..5d6889a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,10 @@ cmake_minimum_required(VERSION 3.9)
 project(LO41 C)
 
 set(CMAKE_C_STANDARD 11)
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror -Wextra -Wshadow")
+
+if(LINUX)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
+endif()
 
 add_executable(LO41 main.c List/List.h List/List.c Objects.h List/Element.c List/Element.h Objects.c Building/Building.c Building/Building.h Elevator/Elevator.c Elevator/Elevator.h CommunicationBox/CommunicationBox.c CommunicationBox/CommunicationBox.h SharedData/SharedData.c SharedData/SharedData.h Visitor/Visitor.c Visitor/Visitor.h Resident/Resident.c Resident/Resident.h)
\ No newline at end of file
diff --git a/main.c b/main.c
index b7c9aaf..1e00dfe 100644
--- a/main.c
+++ b/main.c
@@ -9,6 +9,7 @@
 #include "Resident/Resident.h"
 
 void clean_exit(int error_code){
+	printf("Signal %d received, exiting app\n", error_code);
 	DELETE(GET_INSTANCE(SharedData));
 	exit(0);
 }