Installing gcc 4.9 in ARMv7

Hi,
I want to install gcc 4.9 in Ubuntu in ARMv7 multicore processor. The 
cores are of type Cortex-A7. I tried to add toolchain repository with

sudo add-apt-repository ppa:ubuntu-toolchain-r/test

but failed.

I then tried to make from gcc 4.9.2 branch. But got the following error.

In file included from ./bconfig.h:3:0,
from ../../gcc-4.9.2/gcc/genmddeps.c:18:
./auto-host.h:2056:16: error: declaration does not declare anything 
[-fpermissive]
#define rlim_t long
^


Could you help. I prefer precompiled binaries.