[ECOS]undefined reference to `__init_array_end__ when linking with eCOS

Robert Brusa bob.brusa@gmail.com
Wed Jan 21 13:40:00 GMT 2009

On Wed, 21 Jan 2009 09:16:25 +0100, Gary Thomas <gary@mlbassoc.com> wrote:

> Robert Brusa wrote:   ... cut out
>>>> make: *** [ifw] Fehler 1
>>> Are you using eCos CVS from 2008-11-11 or later? If not, you should.
>>> Jifl
>> Yes, I checked it out as recently as 12-Jan-09 using the command:
>> cvs -z3 -d :pserver:anoncvs@ecos.sourceware.org:/cvs/ecos co -P ecos
>>  Let me add, that previously I used the old version of eCOS (2.x) - and  
>> the toolchain that comes with it. My app compiled, linked and worked.  
>> But now I want to expand it and I thought it would make sense to update  
>> things a bit. But hellas!!! - see above.
> Are you building *all* the objects with the same (new, arm-eabi) tools?
> You should be able to figure which file is generating this section
> using "arm-eabi-objdump --section-headers"  This may help isolate the
> issue.

My feeling (from the output of ld) is that the problem is somewhere in the  
library files that come with the new toolchains. Somehow the build of eCOS  
seems to involve sections that are not adequately dealt with in the  
target.ld-file. Hence I would firstly look at the eCOS built when calling  
the makefile from within configtool - but:

I have never used arm-none-eabi-objdump before so I do not understand from  
your advice what exactly to do. Following your advice, I have run it for  
the section-headers of one of the library files of eCOS extras.o. The  
output is attached. I see nothing special in it.

There are a lot more *.o-files in the the directories generated during the  
build of the eCOS system - and of course, there are also *.a files. Do I  
have to systematically check all of them and what am I expected to see?

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