Renesas TM V.3.20A Spezifikationen PDF herunterladen (Seite 73)

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Renesas Technology, Tools FAQs

Last Updated: August 25, 2000

Document Number: 01051250_e

When I do a Build, the following error is displayed:

samp.c 190 Error (ln30):.\samp.r30:'$func1' value is undefined

Normally, when there is no reference function, a function with "_", as in "_func1", is displayed. Why is this one displayed with "$"?

The func1 function exists in a different file.

NC30WA has two types of methods for naming functions:

Add "_" to the start of the function name.1.

Add "$" to the start of the function name.2.

[The differences between "_" and "$"]

"_" indicates that there is no function argument or that all arguments are passed by the stack.

●

"$" indicates that at least one function argument is passed by a register. (In NC30WA, one of the conditions for a function

argument to be passed by a register is that the function has a prototype declaration.)

●

[Speculated cause of error message]

Probably you are calling func1 using "$func1", but the actual name is "_func1". If this is the case, the prototype is declared in the

calling side, but not declared in the function side. Please make sure the function side has a prototype declaration.

[How to confirm a prototype declaration]

By specifying options -WNP or -Wall during the compile, a warning will be issued for any function that does not have a prototype

declaration.

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