CodeWarrior for MCUのトピックRe: Disable automatic external object creation by linker

Disable automatic external object creation by linker

rvumbaca — Mon, 01 Dec 2014 03:57:47 GMT

Hi,

I am using CW for MCU 10.6 with HCS08.

If I define an extern variable but it is not actually declared anywhere (or if I set it to 'static' and try to access it from a different module using an 'extern' declaration) the linker will generate the warning L1823 and will automatically create the object locally.

I do not want this behaviour, instead I want a linker error to be generated as expected.

Is it possible to disable this 'feature' in the linker? I have looked through the options and searched through these forums, but have found no solution.

Thanks,

Rosario

Re: Disable automatic external object creation by linker

ZhangJennie — Mon, 01 Dec 2014 08:36:37 GMT

hi Rosario,

there are two methods to disable warnings:

(1). add option-WmsgSd<number> to Linker setting.<number>: Message number to be disabled, e.g., 1801

Example -WmsgSd1823

(2). use #pragma OPTION ADD "-WmsgSd1823" in C code. for more information about #pragma OPTION usage, please see CW help manual.Hope this helps!Best Regards,Zhang Jun=========================================

this answer is for you. if it helps, please click on "Correct Answer" button. Thanks!

Re: Disable automatic external object creation by linker

rvumbaca — Mon, 01 Dec 2014 23:40:49 GMT

Hi Jennie,

That pragma cannot be used to supress messages, to do that you use #pragma MESSAGE DISABLE

But I *Do Not* want to hide the message, I want to *Stop Automatic Object Creation*. I have looked through the manuals and it seems that this is not possible.

Regards,

Rosario

Re: Disable automatic external object creation by linker

BlackNight — Tue, 02 Dec 2014 07:42:31 GMT

Hi Rosario,

you can map that warning message to an error with the following linker option:

-WmsgSe1823

That way it does not create such an automatic object.

I hipe this helps,

Erich

Re: Disable automatic external object creation by linker

rvumbaca — Wed, 03 Dec 2014 00:54:52 GMT

Hi Erich,

Thanks! That solved the problem.

Regards,

Rosario