CODEWITHSUNDEEP
cmakevulkanexternal-projectfetchcontent
Metehan Tunçbilek
Metehan Tunçbilek

Reputation: 59

VulkanSDK Fetching the library with CMake

I am currently trying to link vulkan to my project in CMake. I want to download the VulkanSDK with CMake without depending anything but CMake.

I tried to use FetchContent but it only downloads the header files of VulkanSDK. I tried to use ExternalProject but somehow it does the same thing as FetchContent.

I dont not even start implementing a script to download dxcompilerd, glslangd, shaderc_combinedd, spirv-cross-cored etc.

Test for ExternalProject

include(FetchContent)
include(ExternalProject)

set(VULKAN_VER_MAJOR 1)
set(VULKAN_VER_MINOR 3)
set(VULKAN_VER_PATCH 275)

set(VULKAN_VERSION ${VULKAN_VER_MAJOR}.${VULKAN_VER_MINOR}.${VULKAN_VER_PATCH})

ExternalProject_Add(
    vulkan
    PREFIX Vulkan
    GIT_REPOSITORY https://github.com/KhronosGroup/Vulkan-Headers.git
    GIT_TAG v${VULKAN_VERSION}
    CONFIGURE_COMMAND ""
    BUILD_COMMAND ""
    INSTALL_COMMAND ""
    LOG_DOWNLOAD ON
)

ExternalProject_Get_Property(vulkan SOURCE_DIR)
include_directories(${SOURCE_DIR}/include)

add_library(Vulkan INTERFACE)
add_dependencies(Vulkan vulkan)

# Add source to this project's executable.
add_executable (VulkanTest "VulkanTest.cpp" "VulkanTest.h")

target_link_libraries(VulkanTest Vulkan)

if (CMAKE_VERSION VERSION_GREATER 3.12)
  set_property(TARGET VulkanTest PROPERTY CXX_STANDARD 20)
endif()

Test for FetchContent

include(FetchContent)

set(VULKAN_VER_MAJOR 1)
set(VULKAN_VER_MINOR 3)
set(VULKAN_VER_PATCH 275)

set(VULKAN_VERSION ${VULKAN_VER_MAJOR}.${VULKAN_VER_MINOR}.${VULKAN_VER_PATCH})

FetchContent_Declare(
    vulkanheaders
    GIT_REPOSITORY https://github.com/KhronosGroup/Vulkan-Headers.git
    GIT_TAG v${VULKAN_VERSION}
    GIT_SHALLOW TRUE
    GIT_PROGRESS TRUE
)

FetchContent_Declare(
    vulkanloader
    GIT_REPOSITORY https://github.com/KhronosGroup/Vulkan-Loader.git
    GIT_TAG v${VULKAN_VERSION}
    GIT_SHALLOW TRUE
    GIT_PROGRESS TRUE
)

FetchContent_Declare(
    vulkanvalidation
    GIT_REPOSITORY https://github.com/KhronosGroup/Vulkan-ValidationLayers.git
    GIT_TAG v${VULKAN_VERSION}
    GIT_SHALLOW TRUE
    GIT_PROGRESS TRUE
)

FetchContent_Declare(
    vulkantools
    GIT_REPOSITORY https://github.com/KhronosGroup/Vulkan-Tools.git
    GIT_TAG v${VULKAN_VERSION}
    GIT_SHALLOW TRUE
    GIT_PROGRESS TRUE
)

set(PROJECT_IS_TOP_LEVEL OFF)
FetchContent_MakeAvailable(vulkanheaders)
FetchContent_MakeAvailable(vulkanloader)
FetchContent_MakeAvailable(vulkanvalidation)
FetchContent_MakeAvailable(vulkantools)

add_library(myvulkan INTERFACE IMPORTED)
target_include_directories(myvulkan INTERFACE ${vulkan_headers_SOURCE_DIR}/include
    ${vulkan_loader_SOURCE_DIR}/loader
    ${vulkan_validation_layers_SOURCE_DIR}/layers
    ${vulkan_tools_SOURCE_DIR}/vulkaninfo)
target_link_libraries(myvulkan INTERFACE Vulkan::Vulkan)
target_link_libraries(myvulkan INTERFACE 
    Vulkan::Loader
    Vulkan::ValidationLayers
)

# Add source to this project's executable.
add_executable (VulkanTest "VulkanTest.cpp" "VulkanTest.h")

target_link_libraries(VulkanTest PRIVATE myvulkan)

if (CMAKE_VERSION VERSION_GREATER 3.12)
  set_property(TARGET VulkanTest PROPERTY CXX_STANDARD 20)
endif()

What should I do to make vulkan sdk ready for my project without depending on manually downloading it?

Upvotes: 1

Views: 143

Answers (1)

Jherico
Jherico

Reputation: 29240

The Khronos official Vulkan samples repository already builds without requiring you to download the SDK.

It does this by including a bunch of other repositories as Git submodules but you could accomplish the same thing with FetchContent.

However, if you want a more detailed answer you're going to need to be more explicit about what's not working.

Upvotes: 1

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