message: Removing nodefault from the compiler config
diff: @@ -55,7 +55,7 @@ case $host in
  ;;
  esac
  dnl Require C++11 compiler (no GNU extensions)
  -AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory], [nodefault])
  +AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
  dnl Check if -latomic is required for <std::atomic>
  CHECK_ATOMIC
  