为什么arm-linux-gnueabi-g+ -4.4总是构建一个“7-A”二进制?

I'm running Ubuntu 12:04LTS and installed arm-linux-gnueabi C and C++ compiler. The compiled binary won't run on my target board. It looks like even if I specify the cpu and arch, the compiler still builds a binary for the wrong CPU. Instead of atm9tdmi it build and 7-A. I'm running Ubuntu 12:04LTS and installed arm-l