[cmake-developers] Review Request: Topic ExternalProject_labels

[David Cole]

> ExternalProject: Set LABELS property to targets
> his is useful for using CDash subprojects.
>
> ExternalProject: Set FOLDER property to targets
> This is useful when using the USE_FOLDERS global property


Seems like something this simple is not quite flexible enough to make 
it worthwhile. You could do the same thing with set_property calls in 
your own code immediately after an ExternalProject_Add.

If we go to the trouble to actually incorporate this into 
ExternalProject, shouldn't we make it flexible, so that callers can 
pass in LABELS of their choice, and a FOLDER name of their choice? 
Simply hard-coding it to the name of the project, and the string 
"ExternalProjectTargets" may make it possible to organize, but not 
everybody will be happy with the resulting names and organization.

I think if we're going to add something like this to EP, it should be 
flexible enough to allow LABELS and FOLDER values to be passed in from 
the caller.


David C.