How to install the latest g++(currently 5.1) in Ubuntu(currently 14.04)? [duplicate]

This question always bothers me! Last time for 4.9 I tried the commands mentioned in this answer for g++4.9. The same trick doesn't work now:

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-5.1 g++-5.1

results in...

E: Unable to locate package gcc-5.1
E: Couldn't find any package by regex 'gcc-5.1'
E: Unable to locate package g++-5.1
E: Couldn't find any package by regex 'g++-5.1'

What is the correct command for directly installing the latest g++ in Ubuntu? Is there any magic command which works uniformly for all the updates of g++?

Update:

I found that the correct command to install it is:

sudo apt-get install g++-5

This works now! Though in the GCC official page, the version is 5.1.

0

3 Answers

check the repo page

It shows version 5 as latest version so you'll not find 5.1 and thus result this error

you should install using (it still version 5 in your given Repository)

sudo apt-get install g++-5

Else if this doesn't work you can download the source code and compile it

6

Use the following command I found in here

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-5 g++-5
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 60 --slave /usr/bin/g++ g++ /usr/bin/g++-5

Currently the ubuntu repo skips the minor version naming. When I installed the gcc-5 and g++-5 packages, the version that gets installed on my computer is 5.2.1. Well I feel it is as latest as you can get without compiling by yourself. So do not worry about the 5 it is the latest version.