vcpkg/ports/ableton-link/replace_asiosdk_download_by_vcpkg_asiosdk.patch

diff --git "a/examples/CMakeLists.txt" "b/examples/CMakeLists.txt"

--- "a/examples/CMakeLists.txt"
+++ "b/examples/CMakeLists.txt"
@@ -9,28 +9,22 @@ project(LinkExamples)
 #
 
 if(WIN32)
-  function(configure_asio asio_sdk_path_OUT)
-    # ASIO-related path/file variables
-    set(asio_download_root "https://download.steinberg.net/sdk_downloads")
-    set(asio_file_name "asiosdk_2.3.3_2019-06-14.zip")
-    set(asio_dir_name "asiosdk_2.3.3_2019-06-14")
-    set(asio_working_dir "${CMAKE_BINARY_DIR}/modules")
-    set(asio_output_path "${asio_working_dir}/${asio_file_name}")
-
-    message(STATUS "Downloading ASIO SDK")
-    file(DOWNLOAD "${asio_download_root}/${asio_file_name}" ${asio_output_path})
-    file(SHA1 ${asio_output_path} asio_zip_hash)
-    message("   ASIO SDK SHA1: ${asio_zip_hash}")
-
-    message("   Extracting ASIO SDK")
-    execute_process(COMMAND ${CMAKE_COMMAND} -E tar "xf" ${asio_output_path} --format=zip
-      WORKING_DIRECTORY ${asio_working_dir}
-      INPUT_FILE ${asio_output_path}
-    )
+  if(LINK_BUILD_ASIO)
+    function(configure_asio asio_sdk_path_OUT)
+      # ASIO-related path/file variables
+      find_package(ASIOSDK)
+      if(NOT ASIOSDK_FOUND)
+        message(FATAL_ERROR "Steinberg ASIO audio driver SDK not found")
+      else()
+        message(STATUS "Steinberg ASIO audio driver SDK root dir: ${ASIOSDK_ROOT_DIR}")
+      endif()
+      set(asio_working_dir "${ASIOSDK_ROOT_DIR}")
+      set(asio_output_path "${CMAKE_BINARY_DIR}/modules/asiosdk")
 
-    # Set the ASIO SDK path for the caller
-    set(${asio_sdk_path_OUT} "${asio_working_dir}/${asio_dir_name}" PARENT_SCOPE)
-  endfunction()
+      # Set the ASIO SDK path for the caller
+      set(${asio_sdk_path_OUT} "${asio_working_dir}" PARENT_SCOPE)
+    endfunction()
+  endif()
 endif()
 
 #     _             _ _