diff --git a/CMakeLists.txt b/CMakeLists.txt
index d8ca812e..8619f17b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -332,6 +332,7 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
           -Warray-bounds=2 # Some array bounds violations will be found
           -Wshift-overflow=2 # Search for bit left shift overflows (<c++14)
           -Wcast-qual # Warn if the constness is cast away
+          -Winconsistent-missing-override
           -Wstringop-overflow=4
           # -Wstack-protector # Emits a few false positives for low level access
           # -Wconversion # Creates many false positives
diff --git a/hal/src/fsfw_hal/linux/CMakeLists.txt b/hal/src/fsfw_hal/linux/CMakeLists.txt
index 56d4bf48..f6d1a460 100644
--- a/hal/src/fsfw_hal/linux/CMakeLists.txt
+++ b/hal/src/fsfw_hal/linux/CMakeLists.txt
@@ -12,9 +12,14 @@ if(FSFW_HAL_LINUX_ADD_PERIPHERAL_DRIVERS)
 if(FSFW_HAL_LINUX_ADD_LIBGPIOD)
 	add_subdirectory(gpio)
 endif()
-	add_subdirectory(spi)
-	add_subdirectory(i2c)
 	add_subdirectory(uart)
+	# Adding those does not really make sense on Apple systems which
+	# are generally host systems. It won't even compile as the headers
+	# are missing
+	if(NOT APPLE)
+		add_subdirectory(i2c)
+		add_subdirectory(spi)
+	endif()
 endif()
 
 add_subdirectory(uio)
diff --git a/hal/src/fsfw_hal/linux/spi/SpiCookie.cpp b/hal/src/fsfw_hal/linux/spi/SpiCookie.cpp
index e6271c5e..c94fcdf1 100644
--- a/hal/src/fsfw_hal/linux/spi/SpiCookie.cpp
+++ b/hal/src/fsfw_hal/linux/spi/SpiCookie.cpp
@@ -1,4 +1,4 @@
-#include "fsfw_hal/linux/spi/SpiCookie.h"
+#include "SpiCookie.h"
 
 SpiCookie::SpiCookie(address_t spiAddress, gpioId_t chipSelect, std::string spiDev,
                      const size_t maxSize, spi::SpiModes spiMode, uint32_t spiSpeed)
diff --git a/src/fsfw/datapool/PoolDataSetBase.h b/src/fsfw/datapool/PoolDataSetBase.h
index 1b4bacda..dc6ec135 100644
--- a/src/fsfw/datapool/PoolDataSetBase.h
+++ b/src/fsfw/datapool/PoolDataSetBase.h
@@ -109,7 +109,7 @@ class PoolDataSetBase : public PoolDataSetIF, public SerializeIF, public HasRetu
    */
   virtual ReturnValue_t unlockDataPool() override;
 
-  virtual uint16_t getFillCount() const;
+  virtual uint16_t getFillCount() const override;
 
   /* SerializeIF implementations */
   virtual ReturnValue_t serialize(uint8_t** buffer, size_t* size, const size_t maxSize,
diff --git a/src/fsfw/globalfunctions/matching/MatchTree.h b/src/fsfw/globalfunctions/matching/MatchTree.h
index f7775d45..42f10199 100644
--- a/src/fsfw/globalfunctions/matching/MatchTree.h
+++ b/src/fsfw/globalfunctions/matching/MatchTree.h
@@ -25,7 +25,7 @@ class MatchTree : public SerializeableMatcherIF<T>, public BinaryTree<Serializea
       : BinaryTree<SerializeableMatcherIF<T>>(root.element), maxDepth(maxDepth) {}
   MatchTree() : BinaryTree<SerializeableMatcherIF<T>>(), maxDepth(-1) {}
   virtual ~MatchTree() {}
-  virtual bool match(T number) { return matchesTree(number); }
+  virtual bool match(T number) override { return matchesTree(number); }
   bool matchesTree(T number) {
     iterator iter = this->begin();
     if (iter == this->end()) {
diff --git a/src/fsfw/globalfunctions/matching/RangeMatcher.h b/src/fsfw/globalfunctions/matching/RangeMatcher.h
index 4e1f3922..c5962ab3 100644
--- a/src/fsfw/globalfunctions/matching/RangeMatcher.h
+++ b/src/fsfw/globalfunctions/matching/RangeMatcher.h
@@ -15,7 +15,7 @@ class RangeMatcher : public SerializeableMatcherIF<T> {
   RangeMatcher(T lowerBound, T upperBound, bool inverted = false)
       : inverted(inverted), lowerBound(lowerBound), upperBound(upperBound) {}
 
-  bool match(T input) {
+  bool match(T input) override {
     if (inverted) {
       return !doMatch(input);
     } else {
diff --git a/src/fsfw/objectmanager/SystemObject.h b/src/fsfw/objectmanager/SystemObject.h
index 6d5b8303..eeb68b8f 100644
--- a/src/fsfw/objectmanager/SystemObject.h
+++ b/src/fsfw/objectmanager/SystemObject.h
@@ -48,9 +48,9 @@ class SystemObject : public SystemObjectIF {
   virtual ~SystemObject();
   object_id_t getObjectId() const override;
   virtual ReturnValue_t initialize() override;
-  virtual ReturnValue_t checkObjectConnections();
+  virtual ReturnValue_t checkObjectConnections() override;
 
-  virtual void forwardEvent(Event event, uint32_t parameter1 = 0, uint32_t parameter2 = 0) const;
+  virtual void forwardEvent(Event event, uint32_t parameter1 = 0, uint32_t parameter2 = 0) const override;
 };
 
 #endif /* FSFW_OBJECTMANAGER_SYSTEMOBJECT_H_ */
diff --git a/src/fsfw/subsystem/Subsystem.h b/src/fsfw/subsystem/Subsystem.h
index 2c78c8cd..0aa99148 100644
--- a/src/fsfw/subsystem/Subsystem.h
+++ b/src/fsfw/subsystem/Subsystem.h
@@ -138,7 +138,7 @@ class Subsystem : public SubsystemBase, public HasModeSequenceIF {
   virtual ReturnValue_t checkModeCommand(Mode_t mode, Submode_t submode,
                                          uint32_t *msToReachTheMode);
 
-  virtual void startTransition(Mode_t mode, Submode_t submode);
+  virtual void startTransition(Mode_t mode, Submode_t submode) override;
 
   void sendSerializablesAsCommandMessage(Command_t command, SerializeIF **elements, uint8_t count);
 
diff --git a/src/fsfw/subsystem/SubsystemBase.h b/src/fsfw/subsystem/SubsystemBase.h
index 8cfd5be0..d51be540 100644
--- a/src/fsfw/subsystem/SubsystemBase.h
+++ b/src/fsfw/subsystem/SubsystemBase.h
@@ -123,7 +123,7 @@ class SubsystemBase : public SystemObject,
   virtual void performChildOperation() = 0;
 
   virtual ReturnValue_t checkModeCommand(Mode_t mode, Submode_t submode,
-                                         uint32_t *msToReachTheMode) = 0;
+                                         uint32_t *msToReachTheMode) override = 0;
 
   virtual void startTransition(Mode_t mode, Submode_t submode) = 0;
 
diff --git a/src/fsfw/tmtcservices/CommandingServiceBase.h b/src/fsfw/tmtcservices/CommandingServiceBase.h
index 0ae19505..ecc936b7 100644
--- a/src/fsfw/tmtcservices/CommandingServiceBase.h
+++ b/src/fsfw/tmtcservices/CommandingServiceBase.h
@@ -104,7 +104,7 @@ class CommandingServiceBase : public SystemObject,
    *
    * @return requestQueue messageQueueId_t
    */
-  virtual MessageQueueId_t getRequestQueue();
+  virtual MessageQueueId_t getRequestQueue() override;
 
   /**
    * Returns the commandQueue MessageQueueId_t