On Oct 24, 2007, at 4:28 PM, James Newton wrote:

> Where and how do we define those variables?

We have a rule that says .h files should never allocate actual space.
(well, hardly ever.)

So main.h should contain something like:
extern volatile BYTE Stat;

and then you can put the actual definition wherever it makes most sense.
Some compiler/linkers will overlap global external symbols with the same
name, but I wouldn't count on it.

Alternately, and better, you could add a bit to your source complexity
have have "globals.h" that provides the "extern ..." declarations, and
"globals.c" that contains nothing other than the global variable decls.

(the code I work with is about 60,000 files.)

"static" makes the variable local to your particular C file, a sort
of limited scoping.  It's NOT what you want for shared globals.

BillW
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