Hi all,

I am pretty sure I'm doing something wrong here. Several hours of
trying to figure out why has proven fruitless, so I need some help
clearly.

I have a header file. In it, I declare a variable like this:

  extern volatile uint32_t millicnt;   // Counter for milliseconds

That header file is #included at the top of my main project file. It
is also included at the top of its corresponding .c file. However, if
I try to use the variable millicnt in either of those two files, I get
a linker error about an undefined symbol. This is a linker error, not
a compiler error:

:0: error: (499) undefined symbol:
        _millicnt(dist/default/production/LED_Faceplate_v1.production.obj)
(908) exit status =3D 1

Try as I might, I can't seem to puzzle this one out. There is a
typedef right above the variable declaration that does appear to work
in other files, so I'm a bit stumped here. I could just move the
declaration to another file and it would work, but this seems like a
bit of cheating.

Any thoughts?

Thanks!

Josh
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