[CMake] Which variable stores all (sub) directories added sofar?

[Glenn Coombs]

I think that you can use an environment variable rather than a normal
variable to bypass the normal scoping rules.  So:

set(ENV{foo} "bar")

will I think allow other CMakeFiles to read it using:

$ENV{foo}

regardless of the sub-directory level.  I haven't tried using this so it may
not work but I think it should do what you want.

--
Glenn


On 19 May 2011 13:05, Eric Noulard <eric.noulard at gmail.com> wrote:

> 2011/5/19 J.S. van Bethlehem <j.s.van.bethlehem at astro.rug.nl>:
> >
> > Hello Eike,
> >
> > Thanks a lot for your reply. I have actually been thinking in the same
> > direction. I have one problem though: how can you make a truly global
> > variable in CMake? Whenever you do something to a variable in a directory
> > that is added using add_subdirectory(), those changes don't propagate to
> the
> > current directory
> > (well, one could use the PARENT_SCOPE option to set() in the
> sub-directory,
> > but then I won't be able to test that sub-directory seperately because
> then
> > CMake will err that there is no such scope)
> >
> > How do you deal with this?
>
> I think, that's why Eike uses **property** and not variable.
>
> Property may be at "GLOBAL" scope:
>
> set_property(<GLOBAL                            |
>                       DIRECTORY [dir]                   |
>                       TARGET    [target1 [target2 ...]] |
>                       SOURCE    [src1 [src2 ...]]       |
>                       TEST      [test1 [test2 ...]]     |
>                       CACHE     [entry1 [entry2 ...]]>
>                      [APPEND]
>                      PROPERTY <name> [value1 [value2 ...]])
>
>       Set one property on zero or more objects of a scope.  The first
>       argument determines the scope in which the property is set.  It must
>       be one of the following:
>
>       GLOBAL scope is unique and does not accept a name.
> ...
> --
> Erk
> Membre de l'April - « promouvoir et défendre le logiciel libre » -
> http://www.april.org
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