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Software - Support => Installing Software => Topic started by: AcsPrime on February 20, 2021, 06:48:22 AM

Title: GCC 9 and 10 seem to be installed
Post by: AcsPrime on February 20, 2021, 06:48:22 AM
Hello,

I installed Linux Lite 1h ago and in the package manager I can see gcc 9 and gcc 10:
https://pasteboard.co/798ad879-31a9-442f-8c42-660ac1457acf

I really only need the latest and greatest not sure how or why I have two gcc.
I did try to search for gcc 10 in my system but I can only find gcc 9.

How can I just have gcc 10 and not mess anything up?
Title: Re: GCC 9 and 10 seem to be installed
Post by: Moltke on February 20, 2021, 07:30:44 AM
"Image not found" That img you uploaded, is not there. Use imgur https://imgur.com/ or imgBB https://imgbb.com/  https://www.linuxliteos.com/forums/introductions/forum-posting-guidelines/

You can keep both, and make one the default, just type in a terminal
Code: [Select]
sudo update-alternatives --config gcc

You'll see something like
Code: [Select]
There are 3 choices for the alternative gcc (providing /usr/bin/gcc).

  Selection    Path            Priority   Status
------------------------------------------------------------
* 0            /usr/bin/gcc-8    90        auto mode
  1            /usr/bin/gcc-9    70        manual mode
  2            /usr/bin/gcc-10  80        manual mode
 
Press <enter> to keep the current choice[*], or type selection number:

Select the one you want to use and that's it.

Hope this helps! :)
Title: Re: GCC 9 and 10 seem to be installed
Post by: AcsPrime on February 20, 2021, 10:25:08 AM
Hey,

This is the image: https://pasteboard.co/JPdQnzZ.png

It seems that I don't have an extra gcc even though I am seeing one there.
Thanks for your help
Title: Re: GCC 9 and 10 seem to be installed
Post by: AcsPrime on February 25, 2021, 04:59:17 AM
Hello again,

It seems that now I really do have gcc 9 and gcc 10:
Code: [Select]
 ls -la /usr/bin/ | grep gcc
-rwxr-xr-x  1 root root         428 May  7  2006 c89-gcc
-rwxr-xr-x  1 root root         454 Apr 11  2011 c99-gcc
lrwxrwxrwx  1 root root           5 Feb 20 10:38 gcc -> gcc-9
lrwxrwxrwx  1 root root          23 Aug  8  2020 gcc-10 -> x86_64-linux-gnu-gcc-10
lrwxrwxrwx  1 root root          22 Feb 20 10:38 gcc-9 -> x86_64-linux-gnu-gcc-9
lrwxrwxrwx  1 root root           8 Feb 20 10:38 gcc-ar -> gcc-ar-9
lrwxrwxrwx  1 root root          26 Aug  8  2020 gcc-ar-10 -> x86_64-linux-gnu-gcc-ar-10
lrwxrwxrwx  1 root root          25 Feb 20 10:38 gcc-ar-9 -> x86_64-linux-gnu-gcc-ar-9
lrwxrwxrwx  1 root root           8 Feb 20 10:38 gcc-nm -> gcc-nm-9
lrwxrwxrwx  1 root root          26 Aug  8  2020 gcc-nm-10 -> x86_64-linux-gnu-gcc-nm-10
lrwxrwxrwx  1 root root          25 Feb 20 10:38 gcc-nm-9 -> x86_64-linux-gnu-gcc-nm-9
lrwxrwxrwx  1 root root          12 Feb 20 10:38 gcc-ranlib -> gcc-ranlib-9
lrwxrwxrwx  1 root root          30 Aug  8  2020 gcc-ranlib-10 -> x86_64-linux-gnu-gcc-ranlib-10
lrwxrwxrwx  1 root root          29 Feb 20 10:38 gcc-ranlib-9 -> x86_64-linux-gnu-gcc-ranlib-9
lrwxrwxrwx  1 root root           5 Feb 20 10:38 x86_64-linux-gnu-gcc -> gcc-9
-rwxr-xr-x  1 root root     1227880 Aug  8  2020 x86_64-linux-gnu-gcc-10
-rwxr-xr-x  1 root root     1154192 Aug  8  2020 x86_64-linux-gnu-gcc-9
lrwxrwxrwx  1 root root           8 Feb 20 10:38 x86_64-linux-gnu-gcc-ar -> gcc-ar-9
-rwxr-xr-x  1 root root       35464 Aug  8  2020 x86_64-linux-gnu-gcc-ar-10
-rwxr-xr-x  1 root root       35464 Aug  8  2020 x86_64-linux-gnu-gcc-ar-9
lrwxrwxrwx  1 root root           8 Feb 20 10:38 x86_64-linux-gnu-gcc-nm -> gcc-nm-9
-rwxr-xr-x  1 root root       35464 Aug  8  2020 x86_64-linux-gnu-gcc-nm-10
-rwxr-xr-x  1 root root       35464 Aug  8  2020 x86_64-linux-gnu-gcc-nm-9
lrwxrwxrwx  1 root root          12 Feb 20 10:38 x86_64-linux-gnu-gcc-ranlib -> gcc-ranlib-9
-rwxr-xr-x  1 root root       35464 Aug  8  2020 x86_64-linux-gnu-gcc-ranlib-10
-rwxr-xr-x  1 root root       35464 Aug  8  2020 x86_64-linux-gnu-gcc-ranlib-9


so gcc is set to gcc9 how to I get rid of gcc9 or at least just switch gcc to gcc10 (and hopefully not cause conflicts on anything)
Title: Re: GCC 9 and 10 seem to be installed
Post by: Jerry on February 25, 2021, 06:08:44 AM
They may both be there for a reason. You can test your option in a VM first.

Sent from my mobile phone using Tapatalk

Title: Re: GCC 9 and 10 seem to be installed
Post by: AcsPrime on February 25, 2021, 11:27:50 AM
The reason is that I installed gcc10, but I was hoping that gcc10 would then be set as default :)
Title: Re: GCC 9 and 10 seem to be installed
Post by: Jerry on February 25, 2021, 12:01:29 PM
Did you read reply #1?
Title: Re: GCC 9 and 10 seem to be installed
Post by: AcsPrime on February 25, 2021, 01:03:41 PM
I did! This is what I get:
Code: [Select]
~ sudo update-alternatives --config gcc
update-alternatives: error: no alternatives for gcc

Title: Re: GCC 9 and 10 seem to be installed
Post by: Jerry on February 25, 2021, 01:05:50 PM
https://askubuntu.com/questions/26498/how-to-choose-the-default-gcc-and-g-version
Title: Re: GCC 9 and 10 seem to be installed
Post by: AcsPrime on February 25, 2021, 03:28:50 PM
Did you read my reply???
The accepted answer talks about update-alternatives which I've already shown says there are no alternatives.

But if this is as simple as just changing the symlink and there will be no issues sure, I'll change.
Title: Re: GCC 9 and 10 seem to be installed
Post by: Moltke on February 26, 2021, 09:56:52 AM
Did you read my reply???
The accepted answer talks about update-alternatives which I've already shown says there are no alternatives.

But if this is as simple as just changing the symlink and there will be no issues sure, I'll change.

Open the terminal and run
Code: [Select]
gcc -v
And paste the output in your reply.