[cmake-developers] Review Request: Topic ExternalProject_exclude-from-all

[Daniele E. Domenichelli]

Hello,

Please review the topic ExternalProject_exclude-from-all.

When adding a new step using ExternalProject_Add_Step, the main target
will depend on this step.
This option allows one to add a step that will not be executed when the
main target for the external project is executed.

This gives a lot more freedom when creating custom targets for external
projects.


Cheers,
 Daniele