Hi Tara,
 
how was the lib.a created? - maybe you can use " arm-none-linux-gnueabi-readelf"
to get more info about the library.
to understand your problem better - so you used the mbed export to gcc
functionality and now you get errors
like in this post fe. (different cpu etc)
http://developer.mbed.org/questions/2524/gcc-arm-embedded-export-for-LPC4088/ ?
 
ps. for general testing you should maybe first test with a minimal .a that
includes only a minimum of .o
 
regards
 
Jan

> Martine Lenders <authmille...@gmail.com> hat am 24. Februar 2015 um 15:39
> geschrieben:
> 
>  Hi Tara,
>  have you tried to include your external library as an external module [1]?
>   
>  Kind regards,
>  Martine
>   
>  [1] https://github.com/RIOT-OS/RIOT/wiki/Creating-external-modules
> 
>  2015-02-24 15:19 GMT+01:00 Tararaina Klipffel <tei...@gmail.com
> <mailto:tei...@gmail.com> >:
>    > >    Hello,
> > 
> >    We are 4 French students in engineering school. We are currently working
> > on a robotic project of telepresence. We have set up RIOT-OS on a STM32
> > L152RE board and we are now attempting to add an external library in our
> > project. We have a library libmded.a that contains every .o precompiled
> > provided by mbed, and a folder with the corresponding headers. Then we added
> > the .h path to the INCLUDES var in the makefile and the library to the
> > USEMODULE var. But when we're trying to compile it, it seems that the
> > makefile isn't able to find the functions include in this lib. That's why we
> > would be grateful for any advice that could guide us.
> > 
> >    Kind regards.
> >    Tara
> > 
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> >    devel@riot-os.org <mailto:devel@riot-os.org>
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> >  >  _______________________________________________
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> 

 
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