externals: allow user to use system Vulkan headers (#7155)
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@ -376,7 +376,15 @@ endif()
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# vulkan-headers
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add_library(vulkan-headers INTERFACE)
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target_include_directories(vulkan-headers SYSTEM INTERFACE ./vulkan-headers/include)
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if(USE_SYSTEM_VULKAN_HEADERS)
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find_package(Vulkan REQUIRED)
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if(TARGET Vulkan::Headers)
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message(STATUS "Found Vulkan headers")
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target_link_libraries(vulkan-headers INTERFACE Vulkan::Headers)
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endif()
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else()
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target_include_directories(vulkan-headers SYSTEM INTERFACE ./vulkan-headers/include)
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endif()
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if (APPLE)
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target_include_directories(vulkan-headers SYSTEM INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/MoltenVK)
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endif()
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@ -24,6 +24,7 @@ option(USE_SYSTEM_CUBEB "Use the system cubeb (instead of the bundled one)" OFF)
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option(USE_SYSTEM_LODEPNG "Use the system lodepng (instead of the bundled one)" OFF)
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option(USE_SYSTEM_OPENAL "Use the system OpenAL (instead of the bundled one)" OFF)
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option(USE_SYSTEM_VMA "Use the system VulkanMemoryAllocator (instead of the bundled one)" OFF)
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option(USE_SYSTEM_VULKAN_HEADERS "Use the system Vulkan headers (instead of the bundled ones)" OFF)
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# Qt and MoltenVK are handled separately
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CMAKE_DEPENDENT_OPTION(DISABLE_SYSTEM_SDL2 "Disable system SDL2" OFF "USE_SYSTEM_LIBS" OFF)
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@ -47,6 +48,7 @@ CMAKE_DEPENDENT_OPTION(DISABLE_SYSTEM_CUBEB "Disable system cubeb" OFF "USE_SYST
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CMAKE_DEPENDENT_OPTION(DISABLE_SYSTEM_LODEPNG "Disable system lodepng" OFF "USE_SYSTEM_LIBS" OFF)
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CMAKE_DEPENDENT_OPTION(DISABLE_SYSTEM_OPENAL "Disable system OpenAL" OFF "USE_SYSTEM_LIBS" OFF)
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CMAKE_DEPENDENT_OPTION(DISABLE_SYSTEM_VMA "Disable system VulkanMemoryAllocator" OFF "USE_SYSTEM_LIBS" OFF)
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CMAKE_DEPENDENT_OPTION(DISABLE_SYSTEM_VULKAN_HEADERS "Disable system Vulkan headers" OFF "USE_SYSTEM_LIBS" OFF)
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set(LIB_VAR_LIST
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SDL2
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@ -70,6 +72,7 @@ set(LIB_VAR_LIST
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LODEPNG
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OPENAL
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VMA
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VULKAN_HEADERS
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)
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# First, check that USE_SYSTEM_XXX is not used with USE_SYSTEM_LIBS
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