Need Help compilliing SDL to ARM

Hello, I am pretty new on the embedded Linux side of things, but I am trying to crosscompille SDL to my ARM-A system (It is an iMX6 SoC).

I downloaded the gcc-arm toolchain and I am trying to configure the system with the command
./configure --prefix=$PREFIX --host=arm-elf

The error I am getting is:
configure: error: *** Unsupported host: Please add to

How can I overcome this?