On Jun 5, 2006, at 7:46 AM, Thomas C. Sefranek wrote:
>
> Apparently the compiler knows where the reference is, (uart.h)
> but the linker doesn't?
>
The .h file only tells the compiler that the reference exists, and
what it looks like.  Nothing about WHERE it is.  I don't think C has
any primitives to forward library location info to the linker.
You probably need a library specification in your link statement:
	gcc -luart ISRs.o ...
I think the -L option you have now only specifies the search path
for libraries...

BillW
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