Commits on Jan 24, 2023

1. Don't downgrade the C++ version …

   The cmake configuration adds a compiler flag to set the C++ version to
   C++11. This happens even if the default C++ version for the GCC
   compiler version used is higer than C++11. In this case the flag
   downgrades the version.
   
   Since system libraries and headers can use features compatible with
   the default C++ version of the default compiler, downgrading the C++
   version might make some system libraries incompatible with this
   setting.
   
   The recent update of googletest in Fedora requires C++ 14.
   The gcc version in Fedora Rawhide is currently 13.
   
   C++ 17 is the default since GCC 11.
   C++ 14 is the default since GCC 6.1.
   
   This PR drops the addition of the -std=c++11 flag if the GCC version
   is 6.1 or greater. With this change the code can be compiled on Fedora
   Rawhide without triggering errors:
   
   /usr/include/gtest/internal/gtest-port.h:270:2: error: #error C++
   versions less than C++14 are not supported.

   

   ellert committed Jan 24, 2023
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