CMAKE_<LANG>_COMPILER_LAUNCHER ------------------------------ .. versionadded:: 3.4 Default value for :prop_tgt:`<LANG>_COMPILER_LAUNCHER` target property. This variable is used to initialize the property on each target as it is created. This is done only when ``<LANG>`` is ``C``, ``CXX``, ``Fortran``, ``HIP``, ``ISPC``, ``OBJC``, ``OBJCXX``, or ``CUDA``. This variable is initialized to the :envvar:`CMAKE_<LANG>_COMPILER_LAUNCHER` environment variable if it is set.