CMake: Add USE_HOST_VULKAN_MEMORY_ALLOCATOR

CMakeLists.txt

@@ -64,6 +64,7 @@ option(USE_HOST_VULKAN_HEADERS "Use host Vulkan headers" OFF)
 option(USE_HOST_XXHASH "Use host libxxhash" OFF)
 option(USE_HOST_GLM "Use host glm" OFF)
 option(USE_HOST_GTEST "Use host googletest" OFF)
+option(USE_HOST_VULKAN_MEMORY_ALLOCATOR "Use host Vulkan memory allocator" OFF)
 option(USE_OPENMP "Use OpenMP if available" ON)
 option(USE_VULKAN "Build with Vulkan support" ON)
 option(USE_DX9 "Build with Direct3D 9 support" ON)
@@ -1415,8 +1416,12 @@ if(USE_VULKAN)
 	endif()
 	target_link_libraries(${PROJECT_NAME} PRIVATE Vulkan::Headers)
 
-	add_subdirectory(core/deps/VulkanMemoryAllocator)
-	target_compile_options(VulkanMemoryAllocator INTERFACE $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:AppleClang,Clang>>:-Wno-nullability-completeness>)
+	if(USE_HOST_VULKAN_MEMORY_ALLOCATOR)
+		find_package(VulkanMemoryAllocator CONFIG REQUIRED)
+	else()
+		add_subdirectory(core/deps/VulkanMemoryAllocator)
+		target_compile_options(VulkanMemoryAllocator INTERFACE $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:AppleClang,Clang>>:-Wno-nullability-completeness>)
+	endif()
 	target_link_libraries(${PROJECT_NAME} PRIVATE GPUOpen::VulkanMemoryAllocator)
 
 	if(ANDROID AND NOT LIBRETRO AND "arm64" IN_LIST ARCHITECTURE)