[CMake] sequence of cmake external project

[David Cole]

On Wed, Apr 20, 2011 at 12:52 PM, Yu, Daphne (SCR US) <daphne.yu at siemens.com
> wrote:

>  Hello cmake users,
>
> I’m wondering if someone can clarify the sequence commands of CMake
> external project for me.  For example, I have 2 external projects as below:
>
>
> ExternalProject_Add(A
> PREFIX A
>
> INSTALL_COMMAND [copies includes files of A to some path]
> )
>
> ExternalProject_Add(B
> PREFIX B
> DEPENDS A
>
> )
>
> Project B’s target cmake has some find_path commands to look for the
> includes of project A, which is not available until the INSTALL_COMMAND of
> project A. The question is, is the INSTALL_COMMAND of A executed before the
> CONFIGURE step of B or after?  I’m seeing some confusing behavior of what
> the find_path finds and suspect the answer is ‘after’.  Can anyone confirm
> if this is true, and if so what’s a better solution? I cannot run something
> ahead of the cmake either since the downloading of A includes is done in A’s
> download step.
>
> Thanks!
>
>
>
>
>
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All steps of B occur after the last step of A.

B may depend on anything that is done in any step of A.

If not, it's a bug: please provide steps to reproduce the problem.

HTH,
David
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