Install GCC (GNU Compiler Collection) on CentOS 7.

centos.install.gcc.md

• Install Dependencies

yum install -y libmpc-devel mpfr-devel gmp-devel

• Download GCC from:

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

• Configure and Install

./configure --disable-multilib --enable-languages=c,c++
make -j$(nproc)
make install

• To link GCC-4.9.2

export CC=/usr/local/bin/gcc
export CXX=/usr/local/bin/g++