How do I set gcc 4.8 to be the default gcc?

Asked Apr 16 '14 at 15:40

Active Apr 16 '14 at 16:01

Viewed 1,013 times

I'm trying to update to gcc 4.8.2. I have Ubuntu 12.04.

after this if I type gcc -v it says gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

Next I typed

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-4.8

Then I try to check the gcc version by typing gcc -v it says that my version didn't change and I still have gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

After typing gcc-4.8 -v I get 4.8 as the following:

gcc version 4.8.1 (Ubuntu 4.8.1-2ubuntu1~12.04)

Now my question turns into why isn't it finding gcc 4.8.2? How can I set it to use gcc 4.8 as the default when I use gcc -v?

edited Apr 16 '14 at 16:01

Jorge Castro

71,754

asked Apr 16 '14 at 15:40

user21839

if I try 4.8.2 it cannot find it/ error occurs, please post that error. – Avinash Raj Apr 16 '14 at 15:44
And also post the output of apt-cache policy gcc on your question. – Avinash Raj Apr 16 '14 at 15:45
ubuntu@ubuntu-VirtualBox:~$ apt-cache policy gcc gcc: Installed: 4:4.6.3-1ubuntu5 Candidate: 4:4.6.3-1ubuntu5 Version table: *** 4:4.6.3-1ubuntu5 0 500 http://us.archive.ubuntu.com/ubuntu/ precise/main i386 Packages 100 /var/lib/dpkg/status ubuntu@ubuntu-VirtualBox:~$ – user21839 Apr 16 '14 at 15:51
Try gcc-4.8 -v, you need to be explicit – Jorge Castro Apr 16 '14 at 15:51
@user21839 Please put that information in your question not in the comments! – Jorge Castro Apr 16 '14 at 15:52
You need to tell Ubuntu to use 4.8 as the default, like this but for 4.8: http://askubuntu.com/questions/182027/how-to-use-gcc-4-7-in-place-of-4-6-ubuntu-12-04 – Jorge Castro Apr 16 '14 at 15:58
If that works write it up as an answer to this question so we have one for 4.8! – Jorge Castro Apr 16 '14 at 15:59
@JorgeCastro no, there is no 4.8 version on available on his repos. – Avinash Raj Apr 16 '14 at 16:00
It's in there, he just needs to fix the alternatives to point to gcc-4.8 – Jorge Castro Apr 16 '14 at 16:02
But apt-cache policy gcc shows candidate:4:4.6.3-1ubuntu5, which means he didn't installed an 4.8 version of gcc. – Avinash Raj Apr 16 '14 at 16:03
The package is gcc-4.8, not gcc – Jorge Castro Apr 16 '14 at 16:04

How do I set gcc 4.8 to be the default gcc?

0 Answers0