| CMAKE_CXX_STDLIB_MODULES_JSON | |
| ----------------------------- | |
| .. versionadded:: 4.2 | |
| This variable may be used to set the path to a metadata file for CMake to | |
| understand how the ``import std`` target for the active CXX compiler should be | |
| constructed. | |
| This should only be used when the compiler does not know how to discover the | |
| relevant module metadata file without such assistance. |