Re: cross compiler question [undefined reference to `QPtrCollection::newItem(void*)]

[Dan Kegel <dank at kegel dot com>]

David Karlton wrote:
> I'm hoping you can give me some advice about crosscompiling from x86 to 
> mipsel.  I've downloaded your crosstool version 0.28-rc36, and am having 
> some trouble with using it to build a number of standard software 
> packages (e.g. Qt/Embedded).  I've configured the crosstool installation 
> to use gcc 3.2.3 and glibc 2.2.3 (the MIPS device that we need to 
> install to has glibc of 2.2.3).  I'm running SuSE 9.1 natively, which I 
> think includes glibc 2.3.3 (which was used itself in compiling your 
> cross compiler to my x86 platform).
>
> The error I usually am seeing is only during linking.  The compiling 
> invariably works.  The error says "undefined reference" for calls that I 
> would think should link without a hitch.  In all cases, if I compile 
> natively, everything works fine.  It's only while using the cross 
> compiler that it fails in linking.  Also, certain programs cross compile 
> and link without a problem at all, and can run successfully on the MIPS 
> device.
>
> An example of the linking error looks something like:
>
> main.o(.text+0x64): In function `main':
> : undefined reference to `QVBox::QVBox[in-charge](QWidget*, char const*, 
> unsigned)'
> main.o(.gnu.linkonce.d._ZTV6QGList+0x18): undefined reference to 
> `QPtrCollection::newItem(void*)'
>
>
> Do you have any thoughts on what might be happening? 

A couple ideas:
http://root.cern.ch/root-bugs/Incoming?id=2442;page=17;user=guest
suggests adding -lqt (but you of course have to have a cross-compiled
version of qt!)  Do you in fact have libqt etc?


--
My technical stuff: http://kegel.com
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