Re: [ECOS] Chapter 13. Building and Running Sample Applications

[Gary Thomas <gary at mlbassoc dot com>]

On Sun, 2004-08-22 at 03:07, luna wrote:
> Hi,
> 
> i would like to build the sample application in chapter 13.
> 
> i downloaded the pre-built standart tools by eCosCentric Limited 
> (http://ecos.sourceware.org/getstart.html) -> gcc 3.2.1
> 
> my next step was to configure the minimal kernel for my bord with
> eCos Config Tool and i follow the instruction in chapter 13.

The 'printf()' function would not be included in the packages used
by a minimal kernel.  Try building a more complete kernel library,
the default for example.

> 
> My promt with the error (powerpc-eabi-gcc (GCC) 3.2.1 (eCosCentric)):
> 
> $ powerpc-eabi-gcc -g -I ecos_kernel/minimal_ecos_install/include 
> application/hello.c -Lecos_kernel/minimal_ecos_install/lib -Ttarget.ld -nostdlib
> /ecos-g/DOKUME~1/ecos/LOKALE~1/Temp/ccWb5Zig.o: In function `main':
> /home/ecos/ec555_workspace/ecos/application/hello.c:7: undefined reference to 
> `printf'
> collect2: ld returned 1 exit status
> 
> My promt with the error (GNU C version 3.4.1 (powerpc-eabi)):
> 
> $ /gnutools/bin/powerpc-eabi-gcc -g -I ecos_kernel/minimal_ecos_install/include 
> application/hello.c -Lecos_kernel/minimal_ecos_install/lib -Ttarget.ld -nostdlib
> /ecos-g/DOKUME~1/ecos/LOKALE~1/Temp/ccW6G3NF.o(.text+0x20): In function `main':
> application/hello.c:7: undefined reference to `printf'
> collect2: ld returned 1 exit status
> 
> the verbose mode of gcc doesnt tell me more. so i change the prinf to 
> diag_printf. now i can compile my sample project.
> 
> has someone an idea to remove my error?
> 
> Greez Patrick Baumgartner
> 
-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates


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