| RULE_LAUNCH_CUSTOM | |
| ------------------ | |
| Specify a launcher for custom rules. | |
| :ref:`Makefile Generators` and the :generator:`Ninja` generator prefix | |
| custom commands with the given launcher command line. | |
| This is intended to allow launchers to intercept build problems | |
| with high granularity. Other generators ignore this property | |
| because their underlying build systems provide no hook to wrap | |
| individual commands with a launcher. |