Revert "Export versioned targets for CMake"

This reverts commit 382bf3de06fc8c8961055afc37957fe65846c33b.

Revert PR #110
https://github.com/KhronosGroup/Vulkan-Headers/pull/110

2 files changed, 11 insertions, 109 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7ab25eb..fc96c5e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,26 +22,6 @@ cmake_minimum_required(VERSION 3.10.2)
 
 # NONE = this project has no language toolchain requirement.
 project(Vulkan-Headers NONE)
-file(READ "include/vulkan/vulkan_core.h" ver)
-string(REGEX MATCH "#define[ ]+VK_HEADER_VERSION_COMPLETE[ ]+VK_MAKE_VERSION\\([ ]*([0-9]+),[ ]*([0-9]+),[ ]*VK_HEADER_VERSION[ ]*\\)" _ ${ver})
-set(VK_VERSION_MAJOR "${CMAKE_MATCH_1}")
-set(VK_VERSION_MINOR "${CMAKE_MATCH_2}")
-string(REGEX MATCH "#define[ ]+VK_HEADER_VERSION[ ]+([0-9]+)" _ ${ver})
-set(VK_HEADER_VERSION "${CMAKE_MATCH_1}")
-# check if version parsing was successful
-if(VK_VERSION_MAJOR STREQUAL "")
-    message(FATAL_ERROR "Error reading major version from 'include/vulkan/vulkan_core.h'")
-endif()
-if(VK_VERSION_MINOR STREQUAL "")
-    message(FATAL_ERROR "Error reading minor version from 'include/vulkan/vulkan_core.h'")
-endif()
-if(VK_HEADER_VERSION STREQUAL "")
-    message(FATAL_ERROR "Error reading header version from 'include/vulkan/vulkan_core.h'")
-endif()
-set(VK_VERSION_STRING "${VK_VERSION_MAJOR}.${VK_VERSION_MINOR}.${VK_HEADER_VERSION}")
-message(STATUS "Found Vulkan-Headers VK_VERSION_STRING '${VK_VERSION_STRING}'")
-
-option(VULKAN_HEADERS_SKIP_INSTALL "Skip install" OFF)
 
 # User-interface declarations ----------------------------------------------------------------------------------------------------
 # This section contains variables that affect development GUIs (e.g. CMake GUI and IDEs), such as option(), folders, and variables
@@ -58,74 +38,21 @@ endif()
 
 # define exported targets for nested project builds to consume
 add_library(Vulkan-Headers INTERFACE)
-target_include_directories(Vulkan-Headers INTERFACE
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
-    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
-)
+target_include_directories(Vulkan-Headers INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/include")
 add_library(Vulkan::Headers ALIAS Vulkan-Headers)
 
 add_library(Vulkan-Registry INTERFACE)
-target_include_directories(Vulkan-Registry INTERFACE
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/registry>
-    $<INSTALL_INTERFACE:${CMAKE_INSTALL_DATADIR}/vulkan>
-)
+target_include_directories(Vulkan-Registry INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/registry")
 add_library(Vulkan::Registry ALIAS Vulkan-Registry)
 
-# Installation
-# This adds the following files to the install target
-# - Vulkan Header files
-# - Vulkan Registry files
-# - CMake config files generated by CMake
-#   - VulkanHeadersConfig.cmake:        searched for by find_package(VulkanHeaders)
-#   - VulkanHeadersConfigVersion.cmake: provides version numbers
-#   - VulkanHeadersTargets.cmake:       CMake target definitions used by config file
-if(NOT VULKAN_HEADERS_SKIP_INSTALL)
-    set(config_install_dir "${CMAKE_INSTALL_DATADIR}/cmake/VulkanHeaders")
-    set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
-    set(version_config "${generated_dir}/VulkanHeadersConfigVersion.cmake")
-    set(project_config "${generated_dir}/VulkanHeadersConfig.cmake")
-    set(TARGETS_EXPORT_NAME "VulkanHeadersTargets")
-    set(namespace "Vulkan::")
-
-    include(CMakePackageConfigHelpers)
-    write_basic_package_version_file(
-        "${version_config}"
-        VERSION ${VK_VERSION_STRING}
-        COMPATIBILITY AnyNewerVersion
-    )
-    configure_package_config_file(
-        "cmake/Config.cmake.in"
-        "${project_config}"
-        INSTALL_DESTINATION "${config_install_dir}"
-    )
-    install(
-        TARGETS Vulkan-Headers Vulkan-Registry
-        EXPORT "${TARGETS_EXPORT_NAME}"
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    )
-    install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan"
-        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-    )
-    install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/registry"
-        DESTINATION ${CMAKE_INSTALL_DATADIR}/vulkan
-    )
-    install(FILES "${project_config}" "${version_config}"
-        DESTINATION "${config_install_dir}"
-    )
-    install(
-        EXPORT "${TARGETS_EXPORT_NAME}"
-        NAMESPACE "${namespace}"
-        DESTINATION "${config_install_dir}")
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan" DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/registry" DESTINATION ${CMAKE_INSTALL_DATADIR}/vulkan)
 
-    # uninstall target
-    if(NOT TARGET uninstall)
-        configure_file(
-            "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
-            "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
-            IMMEDIATE
-            @ONLY)
-        add_custom_target(uninstall COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
-    endif()
+# uninstall target
+if(NOT TARGET uninstall)
+    configure_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
+                   "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
+                   IMMEDIATE
+                   @ONLY)
+    add_custom_target(uninstall COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
 endif()
diff --git a/cmake/Config.cmake.in b/cmake/Config.cmake.in
deleted file mode 100644
index 4bf6cd5..0000000
--- a/cmake/Config.cmake.in
+++ /dev/null
@@ -1,25 +0,0 @@
-@PACKAGE_INIT@
-
-include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
-check_required_components("@PROJECT_NAME@")
-
-# ALIAS for imported target requires CMake >= 3.11:
-# - https://cmake.org/cmake/help/latest/release/3.11.html#other
-if(NOT CMAKE_VERSION VERSION_LESS 3.11)
-    if(NOT TARGET Vulkan::Headers)
-        set_target_properties(
-            Vulkan::Vulkan-Headers
-            PROPERTIES
-            IMPORTED_GLOBAL True
-        )
-        add_library(Vulkan::Headers ALIAS Vulkan::Vulkan-Headers)
-      endif()
-      if(NOT TARGET Vulkan::Registry)
-        set_target_properties(
-            Vulkan::Vulkan-Registry
-            PROPERTIES
-            IMPORTED_GLOBAL True
-        )
-        add_library(Vulkan::Registry ALIAS Vulkan::Vulkan-Registry)
-    endif()
-endif()