diff --git a/rpcs3/Emu/Cell/Modules/cellNetCtl.h b/rpcs3/Emu/Cell/Modules/cellNetCtl.h
index a763fe7ef2..7b4cf807e0 100644
--- a/rpcs3/Emu/Cell/Modules/cellNetCtl.h
+++ b/rpcs3/Emu/Cell/Modules/cellNetCtl.h
@@ -292,7 +292,7 @@ struct CellNetCtlNatInfo
 
 typedef void(cellNetCtlHandler)(s32 prev_state, s32 new_state, s32 event, s32 error_code, vm::ptr<u32> arg);
 
-static const char* InfoCodeToName(s32 code)
+inline const char* InfoCodeToName(s32 code)
 {
 	switch (code)
 	{
diff --git a/rpcs3/Emu/Cell/Modules/cellSpursSpu.cpp b/rpcs3/Emu/Cell/Modules/cellSpursSpu.cpp
index ca788536eb..c836f33129 100644
--- a/rpcs3/Emu/Cell/Modules/cellSpursSpu.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellSpursSpu.cpp
@@ -19,6 +19,10 @@
 
 LOG_CHANNEL(cellSpurs);
 
+#ifndef _MSC_VER
+#pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
 //----------------------------------------------------------------------------
 // Function prototypes
 //----------------------------------------------------------------------------
diff --git a/rpcs3/Emu/Cell/SPUOpcodes.h b/rpcs3/Emu/Cell/SPUOpcodes.h
index 8e89195e30..efdc68a7f0 100644
--- a/rpcs3/Emu/Cell/SPUOpcodes.h
+++ b/rpcs3/Emu/Cell/SPUOpcodes.h
@@ -36,7 +36,7 @@ inline u32 spu_ls_target(u32 pc, u32 imm = 0)
 	return (pc + (imm << 2)) & 0x3fff0;
 }
 
-static u32 spu_decode(u32 inst)
+inline u32 spu_decode(u32 inst)
 {
 	return inst >> 21;
 }
diff --git a/rpcs3/Emu/RSX/Common/BufferUtils.cpp b/rpcs3/Emu/RSX/Common/BufferUtils.cpp
index b1b4b26027..b8db764b65 100644
--- a/rpcs3/Emu/RSX/Common/BufferUtils.cpp
+++ b/rpcs3/Emu/RSX/Common/BufferUtils.cpp
@@ -1250,16 +1250,6 @@ void write_index_array_for_non_indexed_non_native_primitive_to_buffer(char* dst,
 
 namespace
 {
-	/**
-	* Get first index and index count from a draw indexed clause.
-	*/
-	std::tuple<u32, u32> get_first_count_from_draw_indexed_clause(const std::vector<std::pair<u32, u32>>& first_count_arguments)
-	{
-		u32 first = std::get<0>(first_count_arguments.front());
-		u32 count = std::get<0>(first_count_arguments.back()) + std::get<1>(first_count_arguments.back()) - first;
-		return std::make_tuple(first, count);
-	}
-
 	template<typename T>
 	std::tuple<T, T, u32> write_index_array_data_to_buffer_impl(gsl::span<T> dst,
 		gsl::span<const be_t<T>> src,
diff --git a/rpcs3/Emu/RSX/Common/texture_cache_helpers.h b/rpcs3/Emu/RSX/Common/texture_cache_helpers.h
index f2518f1a63..b744da13e6 100644
--- a/rpcs3/Emu/RSX/Common/texture_cache_helpers.h
+++ b/rpcs3/Emu/RSX/Common/texture_cache_helpers.h
@@ -166,7 +166,7 @@ namespace rsx
 			}
 		}
 
-		static blit_target_properties get_optimal_blit_target_properties(
+		static inline blit_target_properties get_optimal_blit_target_properties(
 			bool src_is_render_target,
 			address_range dst_range,
 			u32 dst_pitch,
diff --git a/rpcs3/Emu/RSX/GL/GLRenderTargets.cpp b/rpcs3/Emu/RSX/GL/GLRenderTargets.cpp
index ddaa438219..f606ef61c3 100644
--- a/rpcs3/Emu/RSX/GL/GLRenderTargets.cpp
+++ b/rpcs3/Emu/RSX/GL/GLRenderTargets.cpp
@@ -99,39 +99,6 @@ u8 rsx::internals::get_pixel_size(rsx::surface_depth_format format)
 	fmt::throw_exception("Unknown depth format");
 }
 
-namespace
-{
-	std::array<u32, 4> get_offsets()
-	{
-		return{
-			rsx::method_registers.surface_a_offset(),
-			rsx::method_registers.surface_b_offset(),
-			rsx::method_registers.surface_c_offset(),
-			rsx::method_registers.surface_d_offset(),
-		};
-	}
-
-	std::array<u32, 4> get_locations()
-	{
-		return{
-			rsx::method_registers.surface_a_dma(),
-			rsx::method_registers.surface_b_dma(),
-			rsx::method_registers.surface_c_dma(),
-			rsx::method_registers.surface_d_dma(),
-		};
-	}
-
-	std::array<u32, 4> get_pitchs()
-	{
-		return{
-			rsx::method_registers.surface_a_pitch(),
-			rsx::method_registers.surface_b_pitch(),
-			rsx::method_registers.surface_c_pitch(),
-			rsx::method_registers.surface_d_pitch(),
-		};
-	}
-}
-
 void GLGSRender::init_buffers(rsx::framebuffer_creation_context context, bool skip_reading)
 {
 	const bool clipped_scissor = (context == rsx::framebuffer_creation_context::context_draw);
diff --git a/rpcs3/Emu/RSX/RSXThread.cpp b/rpcs3/Emu/RSX/RSXThread.cpp
index 1295fb7a08..5d8b3bf3fa 100644
--- a/rpcs3/Emu/RSX/RSXThread.cpp
+++ b/rpcs3/Emu/RSX/RSXThread.cpp
@@ -964,21 +964,6 @@ namespace rsx
 		}
 	}
 
-	namespace
-	{
-		bool is_int_type(rsx::vertex_base_type type)
-		{
-			switch (type)
-			{
-			case rsx::vertex_base_type::s32k:
-			case rsx::vertex_base_type::ub256:
-				return true;
-			default:
-				return false;
-			}
-		}
-	}
-
 	std::array<u32, 4> thread::get_color_surface_addresses() const
 	{
 		u32 offset_color[] =
diff --git a/rpcs3/Emu/RSX/VK/VKDMA.cpp b/rpcs3/Emu/RSX/VK/VKDMA.cpp
index df2c5b9c5c..b0e46d1d39 100644
--- a/rpcs3/Emu/RSX/VK/VKDMA.cpp
+++ b/rpcs3/Emu/RSX/VK/VKDMA.cpp
@@ -249,7 +249,7 @@ namespace vk
 			rsx::get_location(base_address) == CELL_GCM_LOCATION_LOCAL : // NVIDIA workaround
 			true;
 #else
-		// Anything running on AMDGPU kernel driver will not work due to the check for fd-backed memory allocations		
+		// Anything running on AMDGPU kernel driver will not work due to the check for fd-backed memory allocations
 		const bool allow_host_buffers = (vendor != driver_vendor::AMD && vendor != driver_vendor::RADV);
 #endif
 		if (allow_host_buffers && g_render_device->get_external_memory_host_support())
@@ -305,8 +305,7 @@ namespace vk
 
 		for (auto block = first_block; block <= last_block; block += s_dma_block_length)
 		{
-			auto found = g_dma_pool.find(block);
-			auto &entry = g_dma_pool[block];
+			auto& entry = g_dma_pool[block];
 
 			if (block == first_block)
 			{
diff --git a/rpcs3/Emu/RSX/VK/VKPipelineCompiler.h b/rpcs3/Emu/RSX/VK/VKPipelineCompiler.h
index 0c16eda33f..cecb2c1b1b 100644
--- a/rpcs3/Emu/RSX/VK/VKPipelineCompiler.h
+++ b/rpcs3/Emu/RSX/VK/VKPipelineCompiler.h
@@ -162,25 +162,3 @@ namespace vk
 	void destroy_pipe_compiler();
 	pipe_compiler* get_pipe_compiler();
 }
-
-namespace rpcs3
-{
-	template <>
-	usz hash_struct<vk::pipeline_props>(const vk::pipeline_props &pipelineProperties)
-	{
-		usz seed = hash_base(pipelineProperties.renderpass_key);
-		seed ^= hash_struct(pipelineProperties.state.ia);
-		seed ^= hash_struct(pipelineProperties.state.ds);
-		seed ^= hash_struct(pipelineProperties.state.rs);
-		seed ^= hash_struct(pipelineProperties.state.ms);
-		seed ^= hash_base(pipelineProperties.state.temp_storage.msaa_sample_mask);
-
-		// Do not compare pointers to memory!
-		VkPipelineColorBlendStateCreateInfo tmp;
-		memcpy(&tmp, &pipelineProperties.state.cs, sizeof(VkPipelineColorBlendStateCreateInfo));
-		tmp.pAttachments = nullptr;
-
-		seed ^= hash_struct(pipelineProperties.state.att_state[0]);
-		return hash_base(seed);
-	}
-}
diff --git a/rpcs3/Input/product_info.h b/rpcs3/Input/product_info.h
index f7b0b2e5a2..7a505532dd 100644
--- a/rpcs3/Input/product_info.h
+++ b/rpcs3/Input/product_info.h
@@ -43,7 +43,7 @@ namespace input
 		unsigned int pclass_profile; // See CELL_PAD_PCLASS_PROFILE flags
 	};
 
-	static product_info get_product_info(product_type type)
+	inline product_info get_product_info(product_type type)
 	{
 		switch (type)
 		{
@@ -83,7 +83,7 @@ namespace input
 		}
 	}
 
-	static std::vector<product_info> get_products_by_class(int class_id)
+	inline std::vector<product_info> get_products_by_class(int class_id)
 	{
 		switch (class_id)
 		{
diff --git a/rpcs3/cmake_modules/ConfigureCompiler.cmake b/rpcs3/cmake_modules/ConfigureCompiler.cmake
index 453d3abe98..3c6c6a7f4c 100644
--- a/rpcs3/cmake_modules/ConfigureCompiler.cmake
+++ b/rpcs3/cmake_modules/ConfigureCompiler.cmake
@@ -34,7 +34,6 @@ else()
 	add_compile_options(-Werror=return-type)
 
 	#TODO Clean the code so these are removed
-	add_compile_options(-Wno-unused-function)
 	add_compile_options(-Wno-attributes)
 
 	if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
diff --git a/rpcs3/rpcs3qt/log_viewer.cpp b/rpcs3/rpcs3qt/log_viewer.cpp
index 771bbf2f8e..35fa02dbf5 100644
--- a/rpcs3/rpcs3qt/log_viewer.cpp
+++ b/rpcs3/rpcs3qt/log_viewer.cpp
@@ -15,7 +15,8 @@
 
 LOG_CHANNEL(gui_log, "GUI");
 
-constexpr auto qstr = QString::fromStdString;
+[[maybe_unused]] constexpr auto qstr = QString::fromStdString;
+
 inline std::string sstr(const QString& _in)
 {
 	return _in.toStdString();
diff --git a/rpcs3/rpcs3qt/save_manager_dialog.cpp b/rpcs3/rpcs3qt/save_manager_dialog.cpp
index 13a69b2fbe..40a0bd8859 100644
--- a/rpcs3/rpcs3qt/save_manager_dialog.cpp
+++ b/rpcs3/rpcs3qt/save_manager_dialog.cpp
@@ -29,7 +29,8 @@ namespace
 {
 	// Helper converters
 	constexpr auto qstr = QString::fromStdString;
-	inline std::string sstr(const QString& _in) { return _in.toStdString(); }
+
+	[[maybe_unused]] inline std::string sstr(const QString& _in) { return _in.toStdString(); }
 
 	QString FormatTimestamp(u64 time)
 	{
diff --git a/rpcs3/util/vm_native.cpp b/rpcs3/util/vm_native.cpp
index 49df623ac2..ac6641a68d 100644
--- a/rpcs3/util/vm_native.cpp
+++ b/rpcs3/util/vm_native.cpp
@@ -40,11 +40,11 @@ namespace utils
 #endif
 
 #ifdef MADV_FREE
-	constexpr int c_madv_free = MADV_FREE;
+	[[maybe_unused]] constexpr int c_madv_free = MADV_FREE;
 #elif defined(MADV_DONTNEED)
-	constexpr int c_madv_free = MADV_DONTNEED;
+	[[maybe_unused]] constexpr int c_madv_free = MADV_DONTNEED;
 #else
-	constexpr int c_madv_free = 0;
+	[[maybe_unused]] constexpr int c_madv_free = 0;
 #endif
 
 #ifdef MADV_HUGEPAGE