OBJCXX ------ .. include:: ENV_VAR.txt Preferred executable for compiling ``OBJCXX`` language files. Will only be used by CMake on the first configuration to determine ``OBJCXX`` compiler, after which the value for ``OBJCXX`` is stored in the cache as :variable:`CMAKE_OBJCXX_COMPILER _COMPILER>`. For any configuration run (including the first), the environment variable will be ignored if the :variable:`CMAKE_OBJCXX_COMPILER _COMPILER>` variable is defined. If ``OBJCXX`` is not defined, the :envvar:`CXX` environment variable will be checked instead.