[cmake-developers] Suggestion: CMAKE_TOOLCHAIN_FILE warning improvement

[Rolf Eike Beer]

Brad King wrote:
> On 04/10/2013 10:30 AM, Rolf Eike Beer wrote:
> > I think what Stephen had in mind (I really hope he had *g*) is to show
> > a different warning in that case, telling the user that the toolchain
> > file is ignored on any subsequent run.
> 
> Another approach is to not warn when the -DFOO=bar option just
> repeats a value that is already in the cache without changing it.
> That would be a more general solution that covers this case too.

But the toolchain file is indeed a bit special, at it is only evaluated once. 
Telling a user _why_ it is wrong to pass it again, especially if it is 
different, would be a good idea IMHO. Which doesn't conflict with your 
solution.

Eike
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