Re: Makefile for a simple program

Hi Bob,

Bob Brusa wrote:
> Hm, it seems simple, but it is not. I have tried a lot and get errors only.
> 
> I use a COBRA5282-board (with dBUG ready) and I want to compile, link, 
> download and execute the simple helloworld-program shown below:
> ----------------------------------
> #include <stdio.h>
> 
> int main(void)
> {
>     printf("Hello World\n");
>     return 0;
> }
> -----------------------------------
> 
> I use the toolchain installed by executing the script 
> m68k-uclinux-tools-20061214.sh (downloaded from 
> http://www.uclinux.org/pub/uClinux/m68k-elf-tools/)
> My present understanding is, that the makefile should use a prefix of 
> m68k-uclinux and hence invoke gcc as m68k-uclinux-gcc. But there are 
> options (and more) required and I do not really see which ones. Does 
> anyone have a "proposal" how my makefile should look like?

Are you trying to build a uClinux application, or a stand alone
run-on-bare-metal binary?

The above toolchain can of course do both, but you will supply
a different set of compile options.

If compiling a stand alone binary you will need some assembler start
up code, and a library to supply a bare-metal printf as well.
The above toolchain does not have those in it. (It does have
libraries and startup code for uClinux applications though).

Regards
Greg



> Thank you and best regards
> Bob
> 
> PS: Download to the board using tftp works fine, but the binaries I get 
> from my makefile do not work.
> 
> --Bob Brusa                [email protected]
> Chapfwiesenstr. 14       ph: +4144 926 74 74
> CH-8712 Stäfa            fx:   +4144 926 73 34
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