Re: Directory targets: specifics

[Gary Oberbrunner]

>>>>> "ZD" == Zachary Deretsky <address@hidden> writes:

  ZD> 3. Which brings me to the main issue here: which targets are
  ZD> attributed to a directory? I belive, consistent definition is:

  ZD> All the targets of all the Conscripts residing in this directory.

  ZD> This handles the case, for example, when files are copied from a
  ZD> repository to the install area, not touching the directory,
  ZD> where the Conscript with this Command resides in any way.

Hmm.  I was rather thinking that all targets which are built *into* a
particular directory become the dependencies of that directory.  So if
A/Conscript does Install $env ($EXPORT, "foo") and B/Conscript does
Install $env ($EXPORT, "bar"), then those two files become
dependencies of $EXPORT.  (Same for any command, not just Install.)
Your model would say that $EXPORT/foo is a dependency of A and same
for bar and B.  These are pretty different cases.

In your case, what if a Library is built by two different dirs'
Conscripts?  I guess both dirs would depend on the library?

  ZD> 4. The above implies that if Conscript in directory A has
  ZD> Build("B/Conscript");
  ZD> then directory A target would depend on directory B.

Do you mean by this that *no* targets in A should be built until B is
complete?  If you do, I think you would have to add explicit Depends
here for each target in A: I don't think Build's current meaning
should be changed like that.  In A/Conscript you could have something
like:
  Build("B/Conscript");
  Depends $env ($some-A-target, "B")
  Depends $env ($other-A-target, "B")

Without the individual Depends, it would be hard for cons to figure
out that B has to be built first when some third Conscript requires
$some-A-target.

If I misinterpreted you and you just mean that the A directory target
isn't considered up-to-date until B is also up-to-date, then I'm fine
with that, though adding an explicit Depends $env, "A", "B" is so easy
I'd suggest leaving Build the way it is.  The only effect it would
have, anyway, is on an AfterBuild on A: it would wait til after all of
B was built, even if nothing else in A depends on anything in B.  Is
that your intention?

  ZD> 6. Question: in Link "BuildDir" => "SourceDir" situation which
  ZD> directory is the target?

If you accept my modification, this is no longer an issue.  The real
dir of a target is the one that gets the dependency.

-- 
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Gary Oberbrunner                address@hidden
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