early-access version 2853

externals/vcpkg/ports/vulkan/portfile.cmake

@@ -0,0 +1,42 @@
+# Due to the complexity involved, this package doesn't install the Vulkan SDK.
+# It instead verifies that Vulkan is installed.
+# Other packages can depend on this package to declare a dependency on Vulkan.
+message(STATUS "Querying VULKAN_SDK Enviroment variable")
+file(TO_CMAKE_PATH "$ENV{VULKAN_SDK}" VULKAN_DIR)
+set(VULKAN_INCLUDE "${VULKAN_DIR}/include/vulkan/")
+set(VULKAN_ERROR_DL "Before continuing, please download and install Vulkan from:\n    https://vulkan.lunarg.com/sdk/home\nIf you have already downloaded it, make sure the VULKAN_SDK environment variable is set to vulkan's installation root.")
+
+if(NOT DEFINED ENV{VULKAN_SDK})
+    message(FATAL_ERROR "Could not find Vulkan SDK. ${VULKAN_ERROR_DL}")
+endif()
+
+message(STATUS "Searching " ${VULKAN_INCLUDE} " for vulkan.h")
+if(NOT EXISTS "${VULKAN_INCLUDE}/vulkan.h")
+    message(FATAL_ERROR "Could not find vulkan.h. ${VULKAN_ERROR_DL}")
+endif()
+message(STATUS "Found vulkan.h")
+
+# Check if the user left the version in the installation directory e.g. c:/vulkanSDK/1.1.82.1/
+if(VULKAN_DIR MATCHES "(([0-9]+)\\.([0-9]+)\\.([0-9]+)\\.([0-9]+))")
+    set(VULKAN_VERSION "${CMAKE_MATCH_1}")
+    set(VULKAN_MAJOR "${CMAKE_MATCH_2}")
+    set(VULKAN_MINOR "${CMAKE_MATCH_3}")
+    set(VULKAN_PATCH "${CMAKE_MATCH_4}")
+    message(STATUS "Found Vulkan SDK version ${VULKAN_VERSION}")
+
+    set(VULKAN_REQUIRED_VERSION "1.1.82.1")
+    if (VULKAN_MAJOR LESS 1 OR VULKAN_MINOR LESS 1 OR VULKAN_PATCH LESS 82)
+        message(FATAL_ERROR "Vulkan ${VULKAN_VERSION} but ${VULKAN_REQUIRED_VERSION} is required. Please download and install a more recent version from:"
+                            "\n    https://vulkan.lunarg.com/sdk/home\n")
+    endif()
+endif()
+
+if (EXISTS ${VULKAN_DIR}/../LICENSE.txt)
+    configure_file(${VULKAN_DIR}/../LICENSE.txt ${CURRENT_PACKAGES_DIR}/share/vulkan/copyright COPYONLY)
+elseif(EXISTS ${VULKAN_DIR}/LICENSE.txt)
+    configure_file(${VULKAN_DIR}/LICENSE.txt ${CURRENT_PACKAGES_DIR}/share/vulkan/copyright COPYONLY)
+else()
+    configure_file(${CURRENT_PORT_DIR}/LICENSE.txt ${CURRENT_PACKAGES_DIR}/share/vulkan/copyright COPYONLY)
+endif()
+
+SET(VCPKG_POLICY_EMPTY_PACKAGE enabled)