[CMake] Are the [Project name]_SOURCE_DIR variables stored in the cache ?

[Glenn Coombs]

What I am saying is that project("foo") should internally execute the
equivalent of set(foo_SOURCE_DIR "/path/to/source") rather than set(foo
"/path/to/source" CACHE STRING).  That way it would fail on every run if
you referenced a project source directory variable before you had done the
add_subdirectory() for that project.  Currently in that situation it fails
the first time you run cmake but works as expected on subsequent runs of
cmake, which I think is odd behaviour.


On 1 May 2014 18:35, John Drescher <drescherjm at gmail.com> wrote:

> > I thought they probably were.  My question was really if the behaviour
> that
> > results from that was desirable.  I can't see any reason why they should
> be
> > cached as they aren't user configurable variables.  Would it break
> anything
> > badly if they were not stored in the cache ?  It would result in more
> > consistent behaviour IMHO.
> >
>
> Executing
>
> cmake .
>
> would fail in the bin folder if it had no way to know where the source
> folder is.
>
> John
>
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