problem solved

I cross-compiled some code on my PC using


Upon running the program, I got the following error message:

./realfft: /lib/ version `GLIBC_2.15' not found (required by

I've gotten this same error message from utilities installed from the
repository. Google says that there's great confusion about this.

The solution is simple. The correct math library is located in


on my Ubuntu machine. So all it took to fix the problem was an scp:

scp jgd@neonjohn:/usr/arm-linux-gnueabi/lib/ root@maggie:/lib

neonjohn is the name of my Ubuntu machine and maggie is the name of my

re-compile the code I was working on and everything is fine.

If you don't have the above library then install the proper Ubuntu package:

sudo apt-get install gcc-4.6-arm-linux-gnueabi

and if you want C++:

sudo apt-get install g++-4.6-arm-linux-gnueabi