MachineExceptions.h:245: error: declaration does not declare anything

Question

I've been having a terrible time trying to compile something and have worked through most issues, but running into this error:
/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framewor k/Headers/MachineExceptions.h:245: error: declaration does not declare anything
What little there is on the web seems to indicate that there's something perhaps messed up with vtk on intel macs? Or perhaps something else. I also can't seem to compile vtk from source at all, so couldn't fix it that way.
Anyone have any suggestions?
Mac Pro   Mac OS X (10.4.9)   8-core, x1900 vid

Answer 1

Hi Jeff,
> Well, geometric algebra need not encompass the
whole of Clifford algebras in order to be a development
in the field.
   Of course I'm not saying that Geometric Algebra must contain the entirety of the theory of Clifford Algebras in order to be a development in the area. I'm saying that it must leave the confines of that area to be a development. I'm sure you've encountered the word "subset" in the math you've already studied. There is nothing in the definition of a subset about how much of the parent set that the subset should contain. The only requirement of a subset is that it cannot leave the confines of the parent set. I don't care how much of the original theory is omitted, I'm just saying that there exists nothing outside of the original theory.
> Are you saying the work being done is entirely redundant
and should perhaps be abandoned for what's already
been done in studying Clifford algebras and their
generalizations?
   Now you're addressing the meaning of my statements; "Entirely redundant" does characterize a subset so yes, that is what I'm saying. However, you then read in additional meaning. No, I'm not saying that it should be abandoned. I tried to devote half of the original post to saying that a rose by any other name ...
> Perhaps it's just the way you express yourself, but
this topic does seem like it hits a nerve with you
   You are correct. I excluded my perception of plagiarism from the set of statements that I claim to be factual but it's difficult to hide my strong emotional response to that. I agree with everything you say about reformulations but there are right ways and wrong ways to do that. Consider the following search, Google search: Clifford site:geometricalgebra.org, for the word "Clifford" on their website. The only places it appears is in source code and then it is merely a reference to a conjugation operator. There is no mention of Clifford Algebras on their website. The right way would be to state the situation up front.
   I apologize for inflicting my emotional baggage on you. All I really wanted to do is to warn you. You have exactly the right attitude. I envy the sense of wonder and discovery that you now enjoy and the last thing I want to do is to dampen that. In fact, what I would most like to convey is that that feeling shouldn't diminish as you continue. What I fear and want to prepare you for is that when you are ready to branch out and learn the math, it will likely be more difficult than it should be because they haven't given the math foundation that you would need. My fear is that you might get the impression that the math itself is more difficult than it is. I don't want frustration to hinder your efforts to learn.
   You have a great attitude now. I'm convinced that you sense the power and the beauty of the subject. As long as you resist frustration and continue to learn, you should be fine. I assure you that the subject is worth any and all effort that you put into it.
Gary
~~~~
   Before borrowing money from a friend,
   decide which you need more.
         -- Addison H. Hallock