cxx17.patch

   1 --- libgav1-0.17.0/CMakeLists.txt~      2021-12-01 22:30:13.000000000 +0100
   2 +++ libgav1-0.17.0/CMakeLists.txt       2021-12-01 22:33:43.123981512 +0100
   3 @@ -16,8 +16,8 @@
   4  cmake_minimum_required(VERSION 3.7.1 FATAL_ERROR)
   5
   6  # libgav1 requires C++11.
   7 -set(CMAKE_CXX_STANDARD 11)
   8 -set(ABSL_CXX_STANDARD 11)
   9 +set(CMAKE_CXX_STANDARD 17)
  10 +set(ABSL_CXX_STANDARD 17)
  11
  12  project(libgav1 CXX)
  13