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      1 #.rst:
      2 # FindVulkanHeaders
      3 # -----------------
      4 #
      5 # Try to find Vulkan Headers and Registry.
      6 #
      7 # This module is intended to be used by projects that build Vulkan
      8 # "system" components such as the loader and layers.
      9 # Vulkan applications should instead use the FindVulkan (or similar)
     10 # find module that locates the headers and the loader library.
     11 #
     12 # When using this find module to locate the headers and registry
     13 # in a Vulkan-Headers repository, the Vulkan-Headers repository
     14 # should be built with 'install' target and the following environment
     15 # or CMake variable set to the location of the install directory.
     16 #
     17 #    VULKAN_HEADERS_INSTALL_DIR
     18 #
     19 # IMPORTED Targets
     20 # ^^^^^^^^^^^^^^^^
     21 #
     22 # This module defines no IMPORTED targets
     23 #
     24 # Result Variables
     25 # ^^^^^^^^^^^^^^^^
     26 #
     27 # This module defines the following variables::
     28 #
     29 #   VulkanHeaders_FOUND          - True if VulkanHeaders was found
     30 #   VulkanHeaders_INCLUDE_DIRS   - include directories for VulkanHeaders
     31 #
     32 #   VulkanRegistry_FOUND         - True if VulkanRegistry was found
     33 #   VulkanRegistry_DIRS          - directories for VulkanRegistry
     34 #
     35 # The module will also define two cache variables::
     36 #
     37 #   VulkanHeaders_INCLUDE_DIR    - the VulkanHeaders include directory
     38 #   VulkanRegistry_DIR           - the VulkanRegistry directory
     39 #
     40 
     41 # Use HINTS instead of PATH to search these locations before
     42 # searching system environment variables like $PATH that may
     43 # contain SDK directories.
     44 find_path(VulkanHeaders_INCLUDE_DIR
     45     NAMES vulkan/vulkan.h
     46     HINTS
     47         ${VULKAN_HEADERS_INSTALL_DIR}/include
     48         "$ENV{VULKAN_HEADERS_INSTALL_DIR}/include"
     49         "$ENV{VULKAN_SDK}/include")
     50 
     51 if(VulkanHeaders_INCLUDE_DIR)
     52    get_filename_component(VULKAN_REGISTRY_PATH_HINT ${VulkanHeaders_INCLUDE_DIR} DIRECTORY)
     53    find_path(VulkanRegistry_DIR
     54        NAMES vk.xml
     55        HINTS "${VULKAN_REGISTRY_PATH_HINT}/share/vulkan/registry")
     56 endif()
     57 
     58 set(VulkanHeaders_INCLUDE_DIRS ${VulkanHeaders_INCLUDE_DIR})
     59 set(VulkanRegistry_DIRS ${VulkanRegistry_DIR})
     60 
     61 include(FindPackageHandleStandardArgs)
     62 find_package_handle_standard_args(VulkanHeaders
     63     DEFAULT_MSG
     64     VulkanHeaders_INCLUDE_DIR)
     65 find_package_handle_standard_args(VulkanRegistry
     66     DEFAULT_MSG
     67     VulkanRegistry_DIR)
     68 
     69 mark_as_advanced(VulkanHeaders_INCLUDE_DIR VulkanRegistry_DIR)
     70