Resolvendo o erro: Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.

```bash

sudo yum install libmpc-devel mpfr-devel gmp-devel

cd ~/Downloads

curl ftp://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-4.9.2/gcc-4.9.2.tar.bz2 -O

tar xvfj gcc-4.9.2.tar.bz2

cd gcc-4.9.2

./configure --disable-multilib --enable-languages=c,c++

make -j 4

make install

```

Oficial GCC GNU https://ftp.gnu.org/gnu/gcc/gcc-4.9.4/