Conflicting CPU architectures 0/13

```
What steps will reproduce the problem?
1. Make

What is the expected output? What do you see instead?

ex)
arm-none-eabi-ld: error: ./mp3/libmp3.a(mp3tabs.o): Conflicting CPU 
architectures 0/13


Please use labels and text to provide additional information.


```

Original issue reported on code.google.com by `bitten0apple@gmail.com` on 24 May 2013 at 8:20
