Where can I find a g++ 4.7 package?

Question

Some time ago, I managed to find PPA featuring g++-4.7 build. However, I had to reinstall everything on my machine and I lost name of that PPA. Could anyone point me to it? I tried to find it again, but without any luck. I'm on Ubuntu 11.10 installation.

I strongly recommend you do not install 4.7 in place of gcc that is with your version. If you do, you run the risk of breaking your system. — Thomas Ward, Feb 17 '12 at 17:20
@Griwes, you may not be a 'newbie' but others might be and his observation is correct. — Gearoid Murphy, Nov 05 '12 at 21:08
[Related.](http://askubuntu.com/questions/240919/how-to-install-gcc-4-7-on-lubuntu-11-10) (But *if* we decide that's a duplicate of this, we should make sure to ask for answers to be merged, as that's about what to do when this doesn't work.) — Eliah Kagan, Jan 14 '13 at 00:17

score 23 · Accepted Answer · edited Sep 28 '12 at 10:57

23

The Toolchain test builds PPA contains many packages including gcc-4.7.

You can add the repository using

sudo add-apt-repository ppa:ubuntu-toolchain-r/test

Then, to install it use

sudo apt-get update
sudo apt-get install g++-4.7

To change the default compiler use update-alternatives

sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.6
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.7 40 --slave /usr/bin/g++ g++ /usr/bin/g++-4.7
sudo update-alternatives --config gcc

edited Sep 28 '12 at 10:57

Community

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answered Feb 24 '12 at 11:33

Richard Holloway

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Did not work for me. I only see gcc-4.6 (on ubuntu 11.10) – Ugo Apr 21 '12 at 09:00
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Worked with ubuntu 12.04 – Ugo May 01 '12 at 20:10
How can I uninstall g++-4.6 without uninstalling g++ ? Currently I have packages `g++`, `g++-4.6` and `g++-4.7` installed. as result `g++ --version` gives me version 4.6. – expert Sep 24 '12 at 04:24
Ah perhaps I need simply rename g++-4.7 to g++ – expert Sep 24 '12 at 04:29
sudo: add-apt-repository: command not found $ sudo apt-get install software-properties-common python-software-properties – Lee Goddard Oct 19 '15 at 09:57

score 0 · Answer 2 · answered Feb 27 '12 at 07:55

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See http://ask.debian.net/questions/backporting-more-recent-versions-of-the-gcc-toolchain-to-debian-stable

for my description of backporting gcc 4.7 to Debian stable.

answered Feb 27 '12 at 07:55

Faheem Mitha

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score 0 · Answer 3 · answered Nov 07 '11 at 20:21

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I haven't found a PPA for g++-4.7 but there is a gcc-snapshot package.

I guess you have to compile it yourself: http://www.lukaszbyczynski.com/archives/208

answered Nov 07 '11 at 20:21

sroecker

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Well, I cannot find it now, but I recall doing `apt-get install g++-4.7 gcc-4.7`... – Griwes Nov 07 '11 at 20:23

Where can I find a g++ 4.7 package?

3 Answers3

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