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 <[email protected]> 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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