CMake Warning \(policy\) at CMP0121-REMOVE_AT-Common\.cmake:3 \(list\):
  Policy CMP0121 is not set: The list\(\) command now validates parsing of
  index arguments\.  Run "cmake --help-policy CMP0121" for policy details\.
  Use the cmake_policy command to set the policy and suppress this warning\.

  Invalid list index "invalid"\.
Call Stack \(most recent call first\):
  CMP0121-REMOVE_AT-WARN\.cmake:2 \(include\)
  CMakeLists\.txt:3 \(include\)
This warning is for project developers\.  Use -Wno-author or -Wno-policy to
suppress it\.

REMOVE_AT: -->b;c;d;e<--
