Use different variable name in GTest source path detection

We used GTEST_ROOT, which becomes an issue with 3.27 as that variable
would influence find_package behaviour by providing PREFIXES –
introduced with potentially mixed-cased name in 3.12.

CMake Warning (dev) at test/libapt/CMakeLists.txt:8 (find_package):
  Policy CMP0144 is not set: find_package uses upper-case <PACKAGENAME>_ROOT
  variables.  Run "cmake --help-policy CMP0144" for policy details.  Use the
  cmake_policy command to set the policy and suppress this warning.

  CMake variable GTEST_ROOT is set to:

    /usr/src/googletest/googletest

  For compatibility, find_package is ignoring the variable, but code in a
  .cmake module might still use it.

As using this new feature isn't what we wanted at all, we just use a
different variable name to avoid the warning and potential future
problems if we would keep using this name.

0 files changed, 0 insertions, 0 deletions