Install GCC and GDB from source

yum commands:
yum info package-name
yum install package-name
rpm -ql package-name
yum search libudev

g++

From https://gist.github.com/craigminihan/b23c06afd9073ec32e0c
  153  g++ --version
  156  sudo yum install libmpc-devel
  157  sudo yum install mpfr-devel
  158  sudo yum install gmp-devel
  160  curl ftp://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-4.9.4/gcc-4.9.4.tar.bz2 -O
  162  tar xvfj gcc-4.9.4.tar.bz2
  163  cd gcc-4.9.4
  164  ./configure --disable-multilib --enable-languages=c,c++  --prefix=/usr
  165  make -j 4
  166  sudo make install
  167  which g++
  168  g++ --version

gdb

git clone git://sourceware.org/git/binutils-gdb.git
sudo yum install python26-devel.x86_64
./configure --with-python=/usr/bin/python
make
sudo make install

Instructions are here: https://sourceware.org/gdb/wiki/STLSupport, but use the following steps:
 
The actual Python script used by gdb is here:
https://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=libstdc%2b%2b-v3/python/libstdcxx/v6/printers.py;hb=HEAD

Next, download STL support Python scripts for gdb:
 
mkdir ~/gdb-printers
cd ~/gdb-printers
svn co http://gcc.gnu.org/svn/gcc/trunk/libstdc\+\+-v3/python
 
Edit ~/.gdbinit and add the following lines:
python
import sys
sys.path.insert(0, '<absolute path prefix>/gdb-printers/python')
from libstdcxx.v6.printers import register_libstdcxx_printers
register_libstdcxx_printers (None)
end