Am Montag, 18. März 2019, 14:45:15 CET schrieb Brad King:
> On 3/15/19 6:10 PM, Rolf Eike Beer wrote:
> > I suspected it was a policy thing, so I tried this:
> > 
> > foreach(_p RANGE 21 54)
> > 
> >        cmake_policy(SET CMP00${_p} OLD)
> > 
> > endforeach()
> 
> Only policies 51-54 were added between 3.0 and 3.1.  I suggest
> testing with
> 
>     cmake_minimum_required(VERSION 3.0)
>     cmake_policy(SET CMP0051 NEW)
>     cmake_policy(SET CMP0052 NEW)
>     cmake_policy(SET CMP0053 NEW)
>     cmake_policy(SET CMP0054 NEW)
> 
> and then trying different combinations.  My guess is CMP0054.

It has nothing to do with either the policies or the order of 
cmake_minimum_required() and project(). If I require version 3.0 it works, 
with 3.1 it fails.

Eike

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