Add CMake configuration files, meant for VC devel package

VisualC/pkg-support/cmake/sdl2-config.cmake

@@ -0,0 +1,77 @@
+# SDL2 CMake configuration file:
+# This file is meant to be placed in a cmake subfolder of SDL2-devel-2.x.y-VC
+
+cmake_minimum_required(VERSION 3.0)
+
+set(_sdl2_known_comps SDL2 SDL2main SDL2test)
+if(NOT SDL2_FIND_COMPONENTS)
+    set(SDL2_FIND_COMPONENTS ${_sdl2_known_comps})
+endif()
+
+# Fail early when an unknown component is requested
+list(REMOVE_DUPLICATES SDL2_FIND_COMPONENTS)
+list(REMOVE_ITEM SDL2_FIND_COMPONENTS ${_sdl2_known_comps})
+if(SDL2_FIND_COMPONENTS)
+    set(missing_required_comps)
+    foreach(missingcomp ${SDL2_FIND_COMPONENTS})
+        if(SDL2_FIND_REQUIRED_${missingcomp})
+            list(APPEND missing_required_comps ${missingcomp})
+        endif()
+    endforeach()
+    if(missing_required_comps)
+        if(NOT SDL2_FIND_QUIETLY)
+            message(WARNING "SDL2: following component(s) are not available: ${missing_required_comps}")
+        endif()
+        set(SDL2_FOUND FALSE)
+        return()
+    endif()
+endif()
+
+set(SDL2_FOUND TRUE)
+
+if(CMAKE_SIZEOF_VOID_P STREQUAL "4")
+    set(_sdl_arch_subdir "x86")
+elseif(CMAKE_SIZEOF_VOID_P STREQUAL "8")
+    set(_sdl_arch_subdir "x64")
+else()
+    set(SDL2_FOUND FALSE)
+    return()
+endif()
+
+set(SDL2_INCLUDE_DIR    "${CMAKE_CURRENT_LIST_DIR}/../include")
+set(SDL2_INCLUDE_DIRS   "${SDL2_INCLUDE_DIR}")
+set(SDL2_LIBRARY        "${CMAKE_CURRENT_LIST_DIR}/../lib/${_sdl_arch_subdir}/SDL2.lib")
+set(SDL2_DLL_LIBRARY    "${CMAKE_CURRENT_LIST_DIR}/../lib/${_sdl_arch_subdir}/SDL2.dll")
+set(SDL2main_LIBRARY    "${CMAKE_CURRENT_LIST_DIR}/../lib/${_sdl_arch_subdir}/SDL2main.lib")
+set(SDL2test_LIBRARY    "${CMAKE_CURRENT_LIST_DIR}/../lib/${_sdl_arch_subdir}/SDL2test.lib")
+
+
+# All targets are created, even when some might not be requested though COMPONENTS.
+# This is done for compatibility with CMake generated SDL2-target.cmake files.
+
+if(NOT TARGET SDL2::SDL2)
+    add_library(SDL2::SDL2 SHARED IMPORTED)
+    set_target_properties(SDL2::SDL2
+        PROPERTIES
+            INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}"
+            IMPORTED_IMPLIB "${SDL2_LIBRARY}"
+            IMPORTED_LOCATION "${SDL2_DLL_LIBRARY}"
+    )
+endif()
+
+if(NOT TARGET SDL2::SDL2main)
+    add_library(SDL2::SDL2main STATIC IMPORTED)
+    set_target_properties(SDL2::SDL2main
+        PROPERTIES
+            IMPORTED_LOCATION "${SDL2main_LIBRARY}"
+    )
+endif()
+
+if(NOT TARGET SDL2::SDL2test)
+    add_library(SDL2::SDL2test STATIC IMPORTED)
+    set_target_properties(SDL2::SDL2test
+        PROPERTIES
+            INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}"
+            IMPORTED_LOCATION "${SDL2test_LIBRARY}"
+    )
+endif()