[cmake-developers] Adding Ninja file dependency to ExternalProject target

[Chris Bieneman]

Hi Brad,

Thanks for the recommendation. I’ll give it a try today.

-Chris

> On Nov 9, 2015, at 6:29 AM, Brad King <brad.king at kitware.com> wrote:
> 
> On 11/06/2015 05:16 PM, Chris Bieneman wrote:
>> external project will have a file-dependency on clang?
> 
> From a quick check it looks like ExternalProject has no interface
> to directly add file-level dependencies to the builtin configure step.
> That should be corrected if anyone is interested in working on it.
> 
> Meanwhile you should be able to work around the limitation by
> using ExternalProject_Add_Step to insert your own step on which
> the 'configure' step depends, and then list the needed file-level
> dependencies with the DEPENDS option.  Use $<TARGET_FILE:...> to
> refer to the clang executable file if needed.
> 
> -Brad
> 
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