diff --git a/meson.build b/meson.build
index 72ad7c8b493b..19a921a8ba6a 100644
--- a/meson.build
+++ b/meson.build
@@ -31,7 +31,6 @@ if cc.has_header_symbol('stdlib.h', 'secure_getenv', prefix : '#define _GNU_SOUR
 endif
 
 common_arguments = [
-    '-Wno-unused-parameter',
     '-include', 'config.h',
 ]
 
diff --git a/src/android/camera3_hal.cpp b/src/android/camera3_hal.cpp
index 8d2629ca356c..a7f470172583 100644
--- a/src/android/camera3_hal.cpp
+++ b/src/android/camera3_hal.cpp
@@ -31,18 +31,19 @@ static int hal_get_camera_info(int id, struct camera_info *info)
 	return cameraManager.getCameraInfo(id, info);
 }
 
-static int hal_set_callbacks(const camera_module_callbacks_t *callbacks)
+static int hal_set_callbacks(const camera_module_callbacks_t * /*callbacks*/)
 {
 	return 0;
 }
 
-static int hal_open_legacy(const struct hw_module_t *module, const char *id,
-			   uint32_t halVersion, struct hw_device_t **device)
+static int hal_open_legacy(const struct hw_module_t * /*module*/,
+			   const char * /*id*/, uint32_t /*halVersion*/,
+			   struct hw_device_t ** /*device*/)
 {
 	return -ENOSYS;
 }
 
-static int hal_set_torch_mode(const char *camera_id, bool enabled)
+static int hal_set_torch_mode(const char * /*camera_id*/, bool /*enabled*/)
 {
 	return -ENOSYS;
 }
diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index c7c9b3fd1724..b0ba1cf0a921 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -49,7 +49,7 @@ CameraDevice::Camera3RequestDescriptor::~Camera3RequestDescriptor()
  * to the framework using the designated callbacks.
  */
 
-CameraDevice::CameraDevice(unsigned int id, const std::shared_ptr<Camera> &camera)
+CameraDevice::CameraDevice(unsigned int /*id*/, const std::shared_ptr<Camera> &camera)
 	: running_(false), camera_(camera), staticMetadata_(nullptr)
 {
 	camera_->requestCompleted.connect(this, &CameraDevice::requestComplete);
@@ -875,7 +875,7 @@ void CameraDevice::notifyError(uint32_t frameNumber, camera3_stream_t *stream)
 /*
  * Produce a set of fixed result metadata.
  */
-std::unique_ptr<CameraMetadata> CameraDevice::getResultMetadata(int frame_number,
+std::unique_ptr<CameraMetadata> CameraDevice::getResultMetadata(int /*frame_number*/,
 								int64_t timestamp)
 {
 	/*
diff --git a/src/android/camera_proxy.cpp b/src/android/camera_proxy.cpp
index 4f5c0a024903..c9f98c784eec 100644
--- a/src/android/camera_proxy.cpp
+++ b/src/android/camera_proxy.cpp
@@ -79,11 +79,11 @@ static int hal_dev_process_capture_request(const struct camera3_device *dev,
 	return proxy->processCaptureRequest(request);
 }
 
-static void hal_dev_dump(const struct camera3_device *dev, int fd)
+static void hal_dev_dump(const struct camera3_device * /*dev*/, int /*fd*/)
 {
 }
 
-static int hal_dev_flush(const struct camera3_device *dev)
+static int hal_dev_flush(const struct camera3_device * /*dev*/)
 {
 	return 0;
 }
diff --git a/src/cam/main.cpp b/src/cam/main.cpp
index 9d99f5587cbb..ceb0efeff045 100644
--- a/src/cam/main.cpp
+++ b/src/cam/main.cpp
@@ -326,7 +326,7 @@ int CamApp::run()
 	return 0;
 }
 
-void signalHandler(int signal)
+void signalHandler(int /*signal*/)
 {
 	std::cout << "Exiting" << std::endl;
 	CamApp::instance()->quit();
diff --git a/src/ipa/ipa_vimc.cpp b/src/ipa/ipa_vimc.cpp
index 63d578b4e2aa..16c7e0732d40 100644
--- a/src/ipa/ipa_vimc.cpp
+++ b/src/ipa/ipa_vimc.cpp
@@ -30,11 +30,11 @@ public:
 	~IPAVimc();
 
 	int init() override;
-	void configure(const std::map<unsigned int, IPAStream> &streamConfig,
-		       const std::map<unsigned int, ControlInfoMap> &entityControls) override {}
-	void mapBuffers(const std::vector<IPABuffer> &buffers) override {}
-	void unmapBuffers(const std::vector<unsigned int> &ids) override {}
-	void processEvent(const IPAOperationData &event) override {}
+	void configure(const std::map<unsigned int, IPAStream> & /*streamConfig*/,
+		       const std::map<unsigned int, ControlInfoMap> & /*entityControls*/) override {}
+	void mapBuffers(const std::vector<IPABuffer> & /*buffers*/) override {}
+	void unmapBuffers(const std::vector<unsigned int> & /*ids*/) override {}
+	void processEvent(const IPAOperationData & /*event*/) override {}
 
 private:
 	void initTrace();
diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
index 9a13f5c7df17..84f270791340 100644
--- a/src/ipa/rkisp1/rkisp1.cpp
+++ b/src/ipa/rkisp1/rkisp1.cpp
@@ -61,7 +61,7 @@ private:
 	uint32_t maxGain_;
 };
 
-void IPARkISP1::configure(const std::map<unsigned int, IPAStream> &streamConfig,
+void IPARkISP1::configure(const std::map<unsigned int, IPAStream> & /*streamConfig*/,
 			  const std::map<unsigned int, ControlInfoMap> &entityControls)
 {
 	if (entityControls.empty())
diff --git a/src/libcamera/device_enumerator_udev.cpp b/src/libcamera/device_enumerator_udev.cpp
index b2c5fd221dcd..6e0fbbd8c70c 100644
--- a/src/libcamera/device_enumerator_udev.cpp
+++ b/src/libcamera/device_enumerator_udev.cpp
@@ -309,7 +309,7 @@ int DeviceEnumeratorUdev::addV4L2Device(dev_t devnum)
 	return 0;
 }
 
-void DeviceEnumeratorUdev::udevNotify(EventNotifier *notifier)
+void DeviceEnumeratorUdev::udevNotify(EventNotifier * /*notifier*/)
 {
 	struct udev_device *dev = udev_monitor_receive_device(monitor_);
 	std::string action(udev_device_get_action(dev));
diff --git a/src/libcamera/ipc_unixsocket.cpp b/src/libcamera/ipc_unixsocket.cpp
index def08eef00f8..eb594268dd6c 100644
--- a/src/libcamera/ipc_unixsocket.cpp
+++ b/src/libcamera/ipc_unixsocket.cpp
@@ -306,7 +306,7 @@ int IPCUnixSocket::recvData(void *buffer, size_t length,
 	return 0;
 }
 
-void IPCUnixSocket::dataNotifier(EventNotifier *notifier)
+void IPCUnixSocket::dataNotifier(EventNotifier * /*notifier*/)
 {
 	int ret;
 
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index 8d3ad568d16e..84356646b736 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -700,7 +700,7 @@ error:
 }
 
 int PipelineHandlerIPU3::freeBuffers(Camera *camera,
-				     const std::set<Stream *> &streams)
+				     const std::set<Stream *> & /*streams*/)
 {
 	IPU3CameraData *data = cameraData(camera);
 
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 7a28b03b8d38..aed060bada70 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -703,7 +703,7 @@ int PipelineHandlerRkISP1::allocateBuffers(Camera *camera,
 }
 
 int PipelineHandlerRkISP1::freeBuffers(Camera *camera,
-				       const std::set<Stream *> &streams)
+				       const std::set<Stream *> & /*streams*/)
 {
 	RkISP1CameraData *data = cameraData(camera);
 
diff --git a/src/libcamera/pipeline/rkisp1/timeline.cpp b/src/libcamera/pipeline/rkisp1/timeline.cpp
index f6c6434d7b53..59e6de78c79d 100644
--- a/src/libcamera/pipeline/rkisp1/timeline.cpp
+++ b/src/libcamera/pipeline/rkisp1/timeline.cpp
@@ -204,7 +204,7 @@ void Timeline::updateDeadline()
 	timer_.start(deadline);
 }
 
-void Timeline::timeout(Timer *timer)
+void Timeline::timeout(Timer * /*timer*/)
 {
 	utils::time_point now = std::chrono::steady_clock::now();
 
diff --git a/src/libcamera/pipeline/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo.cpp
index fae0ffc4de30..94464c7c7f0c 100644
--- a/src/libcamera/pipeline/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo.cpp
@@ -208,7 +208,7 @@ int PipelineHandlerUVC::allocateBuffers(Camera *camera,
 }
 
 int PipelineHandlerUVC::freeBuffers(Camera *camera,
-				    const std::set<Stream *> &streams)
+				    const std::set<Stream *> & /*streams*/)
 {
 	UVCCameraData *data = cameraData(camera);
 	return data->video_->releaseBuffers();
diff --git a/src/libcamera/pipeline/vimc.cpp b/src/libcamera/pipeline/vimc.cpp
index c16ae4cb76b5..7e325469f178 100644
--- a/src/libcamera/pipeline/vimc.cpp
+++ b/src/libcamera/pipeline/vimc.cpp
@@ -166,7 +166,7 @@ PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
 {
 }
 
-CameraConfiguration *PipelineHandlerVimc::generateConfiguration(Camera *camera,
+CameraConfiguration *PipelineHandlerVimc::generateConfiguration(Camera * /*camera*/,
 	const StreamRoles &roles)
 {
 	CameraConfiguration *config = new VimcCameraConfiguration();
@@ -274,7 +274,7 @@ int PipelineHandlerVimc::allocateBuffers(Camera *camera,
 }
 
 int PipelineHandlerVimc::freeBuffers(Camera *camera,
-				     const std::set<Stream *> &streams)
+				     const std::set<Stream *> & /*streams*/)
 {
 	VimcCameraData *data = cameraData(camera);
 	return data->video_->releaseBuffers();
diff --git a/src/libcamera/process.cpp b/src/libcamera/process.cpp
index 3b4d0f10da67..44ebfec178fe 100644
--- a/src/libcamera/process.cpp
+++ b/src/libcamera/process.cpp
@@ -89,7 +89,7 @@ void sigact(int signal, siginfo_t *info, void *ucontext)
 
 } /* namespace */
 
-void ProcessManager::sighandler(EventNotifier *notifier)
+void ProcessManager::sighandler(EventNotifier * /*notifier*/)
 {
 	char data;
 	ssize_t ret = read(pipe_[0], &data, sizeof(data));
diff --git a/src/libcamera/proxy/ipa_proxy_linux.cpp b/src/libcamera/proxy/ipa_proxy_linux.cpp
index 4e6fa6899e07..d4ccf5112cd7 100644
--- a/src/libcamera/proxy/ipa_proxy_linux.cpp
+++ b/src/libcamera/proxy/ipa_proxy_linux.cpp
@@ -27,11 +27,11 @@ public:
 	~IPAProxyLinux();
 
 	int init() override { return 0; }
-	void configure(const std::map<unsigned int, IPAStream> &streamConfig,
-		       const std::map<unsigned int, ControlInfoMap> &entityControls) override {}
-	void mapBuffers(const std::vector<IPABuffer> &buffers) override {}
-	void unmapBuffers(const std::vector<unsigned int> &ids) override {}
-	void processEvent(const IPAOperationData &event) override {}
+	void configure(const std::map<unsigned int, IPAStream> & /*streamConfig*/,
+		       const std::map<unsigned int, ControlInfoMap> & /*entityControls*/) override {}
+	void mapBuffers(const std::vector<IPABuffer> & /*buffers*/) override {}
+	void unmapBuffers(const std::vector<unsigned int> & /*ids*/) override {}
+	void processEvent(const IPAOperationData & /*event*/) override {}
 
 private:
 	void readyRead(IPCUnixSocket *ipc);
@@ -86,7 +86,7 @@ IPAProxyLinux::~IPAProxyLinux()
 	delete socket_;
 }
 
-void IPAProxyLinux::readyRead(IPCUnixSocket *ipc)
+void IPAProxyLinux::readyRead(IPCUnixSocket * /*ipc*/)
 {
 }
 
diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp
index 208ab54199b1..87d810d7cfa4 100644
--- a/src/libcamera/v4l2_videodevice.cpp
+++ b/src/libcamera/v4l2_videodevice.cpp
@@ -1141,7 +1141,7 @@ Buffer *V4L2VideoDevice::dequeueBuffer()
  * For Capture video devices the Buffer will contain valid data.
  * For Output video devices the Buffer can be considered empty.
  */
-void V4L2VideoDevice::bufferAvailable(EventNotifier *notifier)
+void V4L2VideoDevice::bufferAvailable(EventNotifier * /*notifier*/)
 {
 	Buffer *buffer = dequeueBuffer();
 	if (!buffer)
diff --git a/src/qcam/main.cpp b/src/qcam/main.cpp
index a7ff5c52663b..d8cfc1c3d76b 100644
--- a/src/qcam/main.cpp
+++ b/src/qcam/main.cpp
@@ -17,7 +17,7 @@
 #include "../cam/options.h"
 #include "qt_event_dispatcher.h"
 
-void signalHandler(int signal)
+void signalHandler(int /*signal*/)
 {
 	std::cout << "Exiting" << std::endl;
 	qApp->quit();
diff --git a/test/camera/capture.cpp b/test/camera/capture.cpp
index 791ccad15f70..a5fd0a641705 100644
--- a/test/camera/capture.cpp
+++ b/test/camera/capture.cpp
@@ -19,7 +19,7 @@ protected:
 	unsigned int completeBuffersCount_;
 	unsigned int completeRequestsCount_;
 
-	void bufferComplete(Request *request, Buffer *buffer)
+	void bufferComplete(Request * /*request*/, Buffer *buffer)
 	{
 		if (buffer->status() != Buffer::BufferSuccess)
 			return;
diff --git a/test/libtest/test.h b/test/libtest/test.h
index ec08bf97c03d..193d7aa99f38 100644
--- a/test/libtest/test.h
+++ b/test/libtest/test.h
@@ -26,11 +26,11 @@ public:
 protected:
 	virtual int init() { return 0; }
 	virtual int run() = 0;
-	virtual void cleanup() { }
+	virtual void cleanup() {}
 };
 
 #define TEST_REGISTER(klass)						\
-int main(int argc, char *argv[])					\
+int main(int /*argc*/, char * /*argv*/[])				\
 {									\
 	return klass().execute();					\
 }
diff --git a/test/log/log_process.cpp b/test/log/log_process.cpp
index 2df4aa43713c..fa5639dde7cb 100644
--- a/test/log/log_process.cpp
+++ b/test/log/log_process.cpp
@@ -123,7 +123,8 @@ protected:
 	}
 
 private:
-	void procFinished(Process *proc, enum Process::ExitStatus exitStatus, int exitCode)
+	void procFinished(Process * /*proc*/,
+			  enum Process::ExitStatus exitStatus, int exitCode)
 	{
 		exitStatus_ = exitStatus;
 		exitCode_ = exitCode;
diff --git a/test/message.cpp b/test/message.cpp
index 3775c30a20b3..3e2659c836e3 100644
--- a/test/message.cpp
+++ b/test/message.cpp
@@ -35,7 +35,7 @@ public:
 	void reset() { status_ = NoMessage; }
 
 protected:
-	void message(Message *msg)
+	void message(Message * /*msg*/)
 	{
 		if (thread() != Thread::current())
 			status_ = InvalidThread;
diff --git a/test/process/process_test.cpp b/test/process/process_test.cpp
index 7e7b3c2c8bf3..2ba3efd08457 100644
--- a/test/process/process_test.cpp
+++ b/test/process/process_test.cpp
@@ -75,7 +75,8 @@ protected:
 	}
 
 private:
-	void procFinished(Process *proc, enum Process::ExitStatus exitStatus, int exitCode)
+	void procFinished(Process * /*proc*/,
+			  enum Process::ExitStatus exitStatus, int exitCode)
 	{
 		exitStatus_ = exitStatus;
 		exitCode_ = exitCode;
diff --git a/test/timer-thread.cpp b/test/timer-thread.cpp
index 32853b4e80ef..55b7abcbbeab 100644
--- a/test/timer-thread.cpp
+++ b/test/timer-thread.cpp
@@ -39,7 +39,7 @@ public:
 	}
 
 private:
-	void timeoutHandler(Timer *timer)
+	void timeoutHandler(Timer * /*timer*/)
 	{
 		timeout_ = true;
 	}
diff --git a/test/timer.cpp b/test/timer.cpp
index 2bdb006edccb..03df03aa8d69 100644
--- a/test/timer.cpp
+++ b/test/timer.cpp
@@ -56,7 +56,7 @@ public:
 	}
 
 private:
-	void timeoutHandler(Timer *timer)
+	void timeoutHandler(Timer * /*timer*/)
 	{
 		expiration_ = std::chrono::steady_clock::now();
 		count_++;