How to update gcc to the latest version(in this case 4.7) in Ubuntu 10.04?

I have Ubuntu 10.04 32-bit with gcc 4.4.3 currently installed on it. I want to upgrade it to gcc/g++ 4.7 (I am looking for C++ 0x support)

How to update using Ubuntu Package Manager:

apt-get upgrade/install ??

As a second option I downloaded the latest gcc snapshot file from:

http://gcc.cybermirror.org/snapshots/LATEST-4.7/gcc-4.7-20110709.tar.bz2

Would doing

./configure
make  
make install 

on this package build and install it from source?

Solution 1:

12.04

Add the toolchain ppa test repository, then do apt-get update, and apt-get dist-upgrade

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install g++-4.7 c++-4.7

This is only available in 12.04 - older ubuntu versions cannot be updated to this same version using this method.

See here for further information about PPAs
https://help.launchpad.net/Packaging/PPA

Solution 2:

sudo apt-get install gcc-snapshot

Then, invoke it with:

/usr/lib/gcc-snapshot/bin/gcc

For the second part of the question, the answer is "yes, sort of". If you really want to do that (i.e. installing the gcc-snapshot package isn't enough) then you'll need to install the dependencies:

sudo apt-get build-dep gcc-snapshot

Then, find the correct configure options:

gcc -v

(and modify the install path etc.)

Then, build like this:

mkdir objdir
cd objdir
../gcc-src-dir/configure ......insert..options..here...
make
make install

Solution 3:

10.04 LTS

Use the following command to install add-apt-repository:

apt-get install python-software-properties

Then add the tooclain ppa test repo as described for 12.04 LTS.