# CMAKE_<LANG>_COMPILER_LAUNCHER

Added in version 3.4.

Default value for `<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 `CMAKE_<LANG>_COMPILER_LAUNCHER` environment variable if it is set.