Explicitly set the CMP0135 policy.

This is necessary to silence a warning with CMake >=3.24 coming from FetchContent/ExternalProject.
acts-project · Sep 14, 2022 · 6d09ba9 · 6d09ba9
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diff --git a/benchmarks/googlebenchmark/CMakeLists.txt b/benchmarks/googlebenchmark/CMakeLists.txt
@@ -8,6 +8,11 @@
 cmake_minimum_required( VERSION 3.11 )
 include( FetchContent )
 
+# Silence FetchContent warnings with CMake >=3.24.
+if( POLICY CMP0135 )
+   cmake_policy( SET CMP0135 NEW )
+endif()
+
 # Tell the user what's happening.
 message( STATUS "Building Google Benchmark as part of the VecMem project" )
 

diff --git a/tests/googletest/CMakeLists.txt b/tests/googletest/CMakeLists.txt
@@ -1,13 +1,18 @@
 # VecMem project, part of the ACTS project (R&D line)
 #
-# (c) 2021 CERN for the benefit of the ACTS project
+# (c) 2021-2022 CERN for the benefit of the ACTS project
 #
 # Mozilla Public License Version 2.0
 
 # CMake include(s).
 cmake_minimum_required( VERSION 3.11 )
 include( FetchContent )
 
+# Silence FetchContent warnings with CMake >=3.24.
+if( POLICY CMP0135 )
+   cmake_policy( SET CMP0135 NEW )
+endif()
+
 # Tell the user what's happening.
 message( STATUS "Building GoogleTest as part of the VecMem project" )